Prof. Dr. Magdy Y. Abdelaal; Chemistry Department, Faculty of Science, KAAU, Jeddah, KSA
(1)
LIST OF PUBLICATIONS
Ph.D. Thesis: "Synthesis of some hydrogels and their applications", Mansoura University,
Egypt, 1991.
M.Sc. Thesis: "Studies on polymers carrying phenylboronic acid group", Mansoura
University, Egypt, 1986.
A. BOOKS:
1.
"Functionalized biomedical polymers and their applications", M.Y. Abdelaal (Editor),
Research Signpost Publisher, A review book under preparation.
B. JOURNALS:
1.
M.Y. Abdelaal , T.R. Sobahi & M.S.I. MAkki "Chemical degradation of poly(ethylene
terephthalate)", International Journal of Polymeric Materials, (USA) 57, 73 – 80 (2008)
2.
M.Y. Abdelaal & T.R. Sobahi "Chemical modification of PVC into polymer-supported
oxazolinones and triazoles", Journal of Applied Polymers Science, (USA) 104, 2304 2309 (2007) (Abstract)
3.
M.Y. Abdelaal, E.A. Abdel-Razik, E.M. Abdel-Bary & I.M. El-Sherbiny "Chitosan-based
interpolymeric ph-responsive hydrogels for in-vitro drug release", Journal of Applied
Polymers Science, (USA) 103(5), 2864-2874 (2007) (Abstract).
4.
S.O.S. Bahaffi, M.Y. Abdelaal & E.A. Assirey "Chemical modification of poly(vinyl
chloride) with ethylene glycol and its application in ion-chromatography", International
Journal of Polymeric Materials, (USA) 55, 477-484 (2006) (Abstract).
5.
E.M. Abdel-Bary, E.A. Abdel-Razik, M.Y. Abdelaal & I.M. El-Sherbiny; "Stability of
polypropylene blends under the effect of thermal and UV-degradation", Polymer-Plastics
Technology & Engineering, (USA) 44(5), 847-862 (2005) (Abstract).
6.
M.Y. Abdelaal; "Electrochemical polymerization of naphthols in aqueous medium",
International Journal of Polymeric Materials, (USA) 54(3), 151-159 (2005) (Abstract).
7.
M.Y. Abdelaal; "Nucleophilic substitution reaction of chloromethylated polystyrene with
some 2-substituted-1,3-indanediones", Mansoura Science Bulletin (Egypt), 30(1), 85-97
(2003) (Abstract).
8.
M.Y. Abdelaal; "Preparation and characterization of novel polymer-supported
arylhydrazono compounds", Mansoura Science Bulletin (Egypt), 30(1), 73-83 (2003)
(Abstract).
9.
M.Y. Abdelaal; "Synthesis of novel ladder polymers of poly (3,4-dihydro-2H-pyran-2methanol)", Journal Polymer Science A: (Chem.), (USA) 40(22), 3909-3915 (2002)
(Abstract).
10. A.A. Sarhan; A.A. El-Shehawy & M.Y. Abdelaal; "Phase transfer catalyzed reactions of
crosslinked chloromethylated polystyrene with vanillin", Reactive & Functional Polymers
(UK) 50(2), 139-147 (2002) (Abstract).
11. M.Y. Abdelaal; "Utilization of cellulose triacetate blended membranes for carrier
mediated transport of some metal ions", Journal Applied Polymer Science (USA) 82(8),
2008-15 (2001) (Abstract).
Prof. Dr. Magdy Y. Abdelaal; Chemistry Department, Faculty of Science, KAAU, Jeddah, KSA
(2)
12. M.Y. Abdelaal; I.M.M. Kenawy & M.A.H. Hafez; "Chemical modification of
chloromethylated polystyrene with pyridylazo--naphthol", Journal of Applied Polymer
Science (USA) 77(14), 3044-8 (2000) (Abstract).
13. A.A. Sarhan; M.Y. Abdelaal; M.M. Ali & E.H. Abdel-Latiff, "Reaction of
chloromethylated polystyrene with 4-hydroxybenzaldehyde under phase transfer catalyzed
conditions"; Polymer (UK), 40, 233-41(1998) (Abstract).
14. S. Itsuno; A.A. El-Shehawy; M.Y. Abdelaal & K. Ito, "Asymmetric reactions on
polymers: Diastereoselective allylation of polymer-supported chiral imines", New Journal
Chemistry (UK), 775-777 (1998) (Abstract).
15. A.A. El-Shehawy; M.Y. Abdelaal; K. Watanabe; K. Ito & S. Itsuno, "Enantioselective
allylation of N-(trimethylsilyl)benzaldehyde imine using polymer-supported chiral
allylboron reagents", Tetrahedron: Asymmetry (UK), 8(11), 1731-1734 (1997)
(Abstract).
16. M.Y. Abdelaal, "Synthesis and characterization of some oligopolyalkylene-polyamines"
Journal of Applied Polymer Science (USA), 63(8), 1009-1013 (1997) (Abstract).
17. E.M. Abdel-Bary; E.B. Moawad; F.M. Helaly; M.Y. Abdelaal & W.F. Rashed,
"Evaluation of some organic compounds as antioxidants in rubber" Polymer Degradation
and Stability (UK), 57, 283-292 (1997) (Abstract).
18. A.A. Sarhan; E.M. Afsah; M.Y. Abdelaal & M.R. Ibrahim, "Studies on the alkylation of
polymer-supported ambident anion derived from indane-1,3-dione" Reactive &
Functional Polymers (UK), 32, 231-239 (1997) (Abstract).
19. Y.A. Abbas & M.Y. Abdelaal, "Synthesis and characterization of
polydi-(3,4-dihydro-2H-pyran-2-methyl) adipate hydrogel", Polymer Bull. (Ger.), 36,
273-278 (1996) (Abstract).
20. M.Y. Abdelaal & Y.A. Abbas, "Synthesis and characterization of polyesters based on
3,4-dihydro-2H-pyran-2-methanol", Monatshefte für Chemie (Austria), 127, 1131-1136
(1996) (Abstract).
21. E.A. Abdel-Razik; M.M. Ali; M.Y. Abdelaal & A.A. Sarhan, "Homogeneous
photoinduced graft copolymerization of acrylamide onto ABS-copolymer in presence of
4-acetyldiphenyl as photosensitizer.1. Effect of butadiene content", Polymer-Plastic
Technology & Engineering Journal (USA), 35(6), 865-876 (1996) (Abstract).
22. M.Y. Abdelaal & S.S. Elmorsy, "The role and utilization of tetrachlorosilane/ ethanol
reagent in crosslinking of poly(p-vinylacetophenone)", Angewandte Makromolekulare
Chemie (Ger.), 233, 15-21 (1995) (Abstract).
23. G.A. Kossmehl; E.M. Abdel-Bary; A.A. Sarhan & M.Y. Abdelaal, "Effect of the
chemical structure of some hydrogels on their characteristic properties.1. Effect of
comonomer composition", Angewandte Makromolekulare Chemie (Ger.), 215, 59-77
(1994) (Abstract).
24. A.A. Sarhan; M.M. Ali & M.Y. Abdelaal, "Racemic resolution of mandelic acid on
polymers with chiral cavities. 3: Co-operative binding over phenylboronic acid groups and
N-bases", Reactive Polymers (UK), 11, 57-70 (1989) (Abstract).
25. A.A. Sarhan; M.M. Abou-Elzahab & M.Y. Abdelaal, "Preliminary studies on
polymer-supported protection of the functions of - and -hydroxycarboxylic acids",
Mansoura Science Bulletin (Egypt), 16(1), 363-80 (1989) (Abstract).
Prof. Dr. Magdy Y. Abdelaal; Chemistry Department, Faculty of Science, KAAU, Jeddah, KSA
(3)
26. A.A. Sarhan; M.M. Ali & M.Y. Abdelaal, "Utilization of macroporous polymer
containing phenylboronic acid groups in the solid-phase synthesis", Journal für praktische
Chemie (Ger.), 330(1), 71-8 (1988) (Abstract).
27. A.A. Sarhan; M.M. Ali & M.Y. Abdelaal, "Effect of covering and N-bases on reactions of
macroporous polymer-supported phenylboronic acid with mandelic acid", Mansoura
Science Bulletin (Egypt), 15(2), 443-59 (1988) (Abstract).
28. A.A. Sarhan; M.M. Ali & M.Y. Abdelaal, "Formation and stability of cyclic esters from a
polymer-supported phenylboronic acid and diol system in presence of organic bases",
Mansoura Science Bulletin (Egypt), 15(2), 375-87 (1988) (Abstract).
C. CONFERENCES:
1.
M.Y. Abdelaal, S.O.S. Bahaffi and S.S.A. Al-Harthy; "Preparation of polymeric blends
th
from PVC and polyvinylpyrrolidone for metal ion removal from wastewater", 9
International Conference on Chemistry and its Role in Development; Sharm El-Sheikh,
Egypt, April 16-19, 2007.
2.
M.Y. Abdelaal, " Synthesis and Applications of Functionalized Polymers" 3rd Symposium
on Scientific Research and Technological Development in the Arab World,(SROIII),
KACST, Riyadh, Saudi Arabia, April, 11-14, 2004.
3.
M.Y. Abdelaal; E.M. Abdel-Bary; E.A. Abdel-Razik and I.M. El-Sherbiny; "Some
factors affecting the delivery of some bioactive materials from chitosan", 7th Arab
International Conference on Polymer Science & Technology, and 3rd Arab Conference on
Materials Science, (ACMS-III), Cairo-Hurghada, Egypt, October 5-9, 2003 (B-P9).
4.
M.Y. Abdelaal; E.M. Abdel-Bary; E.A. Abdel-Razik and I.M. El-Sherbiny; "Preparation
and characterization of chitosan blends as support of drugs and other bioactive materials",
7th Arab International Conference on Polymer Science & Technology, and 3rd Arab
Conference on Materials Science, (ACMS-III), Cairo-Hurghada, Egypt, October 5-9, 2003
(B-P10).
5.
A.A. Sarhan; M.M. Ali; M.Y. Abdelaal and D.M. Ayad; Phase transfer (PT) catalyzed
reactions of chloromethylated polystyrene with 4-hydroxybenzaldehyde: Effect of the
structure of PT-catalysts on the yield and selectivity; 7th International Conference on
Chemistry and Its Role in Development; Sharm El-Sheikh, Egypt, April 14-17, 2003
(PE-64).
6.
A.A. Sarhan; M.M. Ali; M.Y. Abdelaal and D.M.A. Hanna; Reaction of chloromethylated
polystyrene with benzyl cyanide under phase transfer catalyzed conditions; 7th
International Conference on Chemistry and Its Role in Development; Sharm El-Sheikh,
Egypt, April 14-17, 2003 (PE-80).
7.
M.A. Hanna & M.Y. Abdelaal; "Novel polystyrene-based photoreceptor grade anilide
couplers", 7th International Conference on Chemistry and Its Role in Development; Sharm
El-Sheikh, Egypt, April 14-17, 2003 (PE78).
8.
M.Y. Abdelaal; "Synthesis of polymer-supported 1,3-indanediones and its application as
metal chelating agents", 7th International Conference on Chemistry and Its Role in
Development; Sharm El-Sheikh, Egypt, April 14-17, 2003 (PE-81).
9.
M.Y. Abdelaal; "On the precisely defined structures of crosslinked polyesters based on
3,4-dihydro-2H-pyran-2-methanol", 6th Arab Intl. Conf. On Polymer Sci. & Technol.,
Sharm El-Sheikh, Egypt, Sept. 1-5, 2001 (P-NA1).
Prof. Dr. Magdy Y. Abdelaal; Chemistry Department, Faculty of Science, KAAU, Jeddah, KSA
(4)
10. M.A. Hanna & M.Y. Abdelaal; "New polystyrene based ultraviolet absorbers", 6th Arab
Intl. Conf. On Polymer Sci. & Technol., Sharm El-Sheikh, Egypt, Sept. 1-5, 2001
(P-NA14).
11. M.Y. Abdelaal; "Utilization of cellulose triacetate blended membranes for carrier
mediated transport of some metal ions", 6th International Conference on Chemistry and Its
Role in Development; Mansoura Univ., Mansoura, Egypt, April 17-20, 2001 (3:97).
12. M.Y. Abdelaal; G. El-Damarawy & T. Fahmy; "Glass intercalated polypyrrole" XXII
Conf. Solid State Sciences, Hurghada, Egypt, March 18-23, 2001 (B19).
13. E.M. Abdel-Bary; E.A. Abdel-Razik; M.Y. Abdelaal & I.M. El-Sherbeny; "Stability of
polypropylene blends under the effect of thermal and UV-degradation" 5th International
Conference on Chemistry and Its Role in Development; Mansoura Univ., Mansoura, Egypt,
April 19-22, 1999 (21Ap-O3).
14. M.Y. Abdelaal; I.M.M. Kenawy & M.A.H. Hafez; "Chemical modification of
chloromethylated polystyrene with pyridylazo--naphthol", 5th International Conference
on Chemistry and Its Role in Development; Mansoura Univ., Mansoura, Egypt, April
19-22, 1999 (19Ap-P6).
15. A.A. El-Shehawy; M.Y. Abdelaal & A.A. Sarhan; "Phase transfer catalyzed reactions of
crosslinked chloromethylated polystyrene with vaniline", 5th Arab Intl. Conf. on Polymer
Sci. & Technol.; Luxor-Aswan, Sept. 18-22, 1999 (PS-12).
16. M.Y. Abdelaal; "Preparation and evaluation of polymer membranes for ion sensing and
separation", 5th Arab Intl. Conf. on Polymer Sci. & Technol.; Luxor-Aswan, Sept. 18-22,
1999 (ON-P4).
17. A.A. Sarhan; E.M. Afsah; M.Y. Abdelaal & M.R. Ibrahim, "Studies on the alkylation of
polymer-supported ambident anion derived from indane-1,3-dione", 4th International
Conference on Chemistry and Its Role in Development; Mansoura Univ., Mansoura, Egypt,
April 8-10, 1997 (Ap-19).
18. E.M. Abdel-Bary; E.B. Moawad; F.M. Helaly; M.Y. Abdelaal & W.F. Rashed, "Effect of
some new organic compounds as antioxidants in styrene-butadiene and natural rubbers",
rd
3 Arab Intl. Conf. on Polymer Sci. & Technol.; Mansoura University, Mansoura, Sept.
4-7, 1995 (Dp-1).
19. A.A. Sarhan; M.Y. Abdelaal; M.M. Ali & E.H. Abdel-Latiff, "Reactions of
chloromethylated polystyrene with 4-hydroxybenzaldehyde under phase transfer catalyzed
conditions", 4th International Conference on Chemistry and Its Role in Development;
Mansoura Univ., Mansoura, Egypt, April 8-10, 1997 (Ap-20).
20. M.Y. Abdelaal & S.S. Elmorsy, "The role and utilization of tetrachlorosilane reagent in
crosslinking of poly(p-vinylacetophenone)", 3rd International Conference on Chemistry
and Its Role in Development; Mansoura Univ., Mansoura, Egypt, April 27-29, 1994
(Ap-13).

Prof. Dr. Magdy Y. Abdelaal; Chemistry Department, Faculty of Science, KAAU, Jeddah, KSA
(5)
ABSTRACTS
2.
M.Y. Abdelaal & T.R. Sobahi "Chemical modification of PVC into polymer-supported
oxazolinones and triazoles", Journal of Applied Polymers Science, (USA) 104, 2304 2309 (2007).
Abstract
ABSTRACT: PVC (P1) was converted into polymer-supported oxazolinone and triazole
derivatives after sequential chemical assembly of the reactive groups onto PVC. First,
poly(vinyl chloride-co-vinylaminoaniline) (P2) was prepared by the reaction of PVC with
p-phenylenediamine. The primary aromatic amino group in P2 was diazotized and reacted
with hippuric acid to form the supported oxazolinone derivative (P3) which could be
converted into supported triazole derivatives (P4)–(P6) on further interaction with
substituted anilines. The involved ring opening and preferred cyclization reactions have
been clearly addressed based on spectroscopic and elemental analyses of the products.
Also the ability for metal uptake has been roughly tested through the interaction with
Cu(II) ions. (List)
3.
M.Y. Abdelaal, E.A. Abdel-Razik, E.M. Abdel-Bary & I.M. El-Sherbiny "Chitosan-based
interpolymeric ph-responsive hydrogels for in-vitro drug release", Journal of Applied
Polymers Science, (USA) 103(5), 2864-2874 (2007).
Abstract
Two series of pH-responsive biodegradable interpolymeric (IPN) hydrogels based on
chitosan (Ch) and poly(vinyl alcohol) (PVA) were prepared for controlled drug release
investigations. The first series was chemically crosslinked with different concentrations of
glutaraldehyde and the second was crosslinked upon g-irradiation by different doses. The
equilibrium swelling characteristics were investigated for the gels at 378C in buffer
solutions of pH 2.1 and 7.4 as simulated gastric and intestinal fluids, respectively.
5-Fluorouracil (FU) was entrapped in the hydrogels, as a model therapeutic agent, and the
in vitro release profiles of the drug were established at 378C in pH 2.1 and 7.4. FTIR,
SEM, and X-ray diffraction analyses were used to characterize and investigate the
structural changes of the gels with the variation of the blend composition and crosslinker
content before and after the drug loading. (List)
4.
S.O.S. Bahaffi, M.Y. Abdelaal & E.A. Assirey "Chemical modification of poly(vinyl
chloride) with ethylene glycol and its application in ion-chromatography", International
Journal of Polymeric Materials, (USA) 55, 477-484 (2006).
Abstract
Polyvinyl chloride (PVC) has been chemically modified through crosslinking with
different molar ratios of sodium ethylene glycoxide in ethylene glycol. The crosslinked
PVC was used for coating of silica gel 60 particles and the obtained products were
impregnated with tetramethylammonium hydroxide (TMAH). The crosslinking reaction
as well as the insertion of TMAH were followed up and quantitatively determined with the
aid of FT-IR spectroscopic and elemental analyses. The obtained materials were roughly
tested for ion chromatographic separation of different ions. Retention time (tR) was
determined for lithium, magnesium, strontium and calcium cations while Chloride, nitrate
and sulfate were selected as representatives for anions. (List)
5.
E.M. Abdel-Bary, E.A. Abdel-Razik, M.Y. Abdelaal & I.M. El-Sherbiny; "Stability of
polypropylene blends under the effect of thermal and UV-degradation", Polymer-Plastics
Technology & Engineering, (USA) 44(5), 847-862 (2005).
Prof. Dr. Magdy Y. Abdelaal; Chemistry Department, Faculty of Science, KAAU, Jeddah, KSA
(6)
Abstract
Polypropylene has been blended with ethylene-propylene-diene monomer (EPDM),
low-density polyethylene (LDPE), and ethylene-vinyl acetate (EVA) copolymer and their
combinations. The obtained films have been subjected to thermal and UV weathering. The
relative change in the carbonyl index as a result of thermal and UV aging has been
determined by using FT-IR spectroscopy. In addition, the thermal behavior of these blends
has been followed up by using thermogravimetric analysis. In addition, sol-gel analysis of
the films before and after aging has been conducted in p-xylene and correlated with the
extent of oxidation. The effects of different factors, such as blend composition, addition of
UV stabilizer, and mixing and blending method on the aging characteristics, have been
studied. (List).
6.
M.Y. Abdelaal; "Electrochemical polymerization of naphthols in aqueous medium",
International Journal of Polymeric Materials, (USA) 54(3), 151-159 (2005)
Abstract
In this work poly(1-naphthol) and poly(2-naphthol), designated as poly(NAP-1) and
poly(NAP-2), respectively, have been electrochemically synthesized. The electrochemical
synthesis was achieved by using aqueous solution of sodium hydroxide as an electrolyte.
The chem. structure of the formed polymers was proved by means of ex-situ FT-IR
spectroscopy and compared with those previously prepared in non-aqueous solutions. The
electrochemical polymerization mechanism was discussed. (List)
7.
M.Y. Abdelaal; "Nucleophilic substitution reaction of chloromethylated polystyrene with
some 2-substituted-1,3-indanediones", Mansoura Science Bulletin (Egypt), 30(1), 85-97
(2003)
Abstract
Chloromethylated polystyrene has been used as an alkylating agent in the nucleophilic
displacement reaction under phase transfer catalyzed conditions with some 2-substituted
1,3-indanediones as O-, and C-nucleophiles. The reaction has been monitored by FT-IR
spectroscopic analysis to confirm the reaction and to distinguish between the O- and
C-alkylation products. The polymer-supported 1,3-indanediones have been characterized
and the total alkylation yields relative to that of the parent 1,3-indanedione as well as
O-/C-alkylation ratio have been determined. The interaction of polymer-supported
1,3-indanediones with Fe(III) ions has been roughly tested. The obtained results reflect the
ability of the obtained polymer-supported 1,3-indanediones to be used for wastewater
treatment through preconcentration technique. (List)
8.
M.Y. Abdelaal; "Preparation and characterization of novel polymer-supported
arylhydrazone compounds", Mansoura Science Bulletin (Egypt), 30(1), 73-83 (2003)
Abstract
In a multi-step synthesis, o-(2,3-dimethyl-5-oxo-1-phenyl-2-pyrazolin-4-yl-carbamoyl)
acetylpolystyrene P4 was prepared. This accommodates the pyrazolone moiety as a
precursor for preparation of the target novel series of polystyrene-based arylhydrazono
compound P5. This has been achieved through a coupling reaction with different
arenediazonium salts. The obtained polymeric products were characterized through FT-IR
spectroscopic analysis and the reaction conversion % was determined through elemental
analysis. The existence of these products in the tautomeric; azo-keto and hydrazo-keto
forms P6-P8 was tested and discussed. Elemental as well as spectral data are in agreement
with the proposed structure for the hitherto prepared arylhydrazono compounds. In order
Prof. Dr. Magdy Y. Abdelaal; Chemistry Department, Faculty of Science, KAAU, Jeddah, KSA
(7)
to diagnose the effect of substituents in the arylhydrazono moiety, the UV absorption
spectra of a group of derivatives that differ in the type of substituents were recorded in both
of cyclohexane and methylene chloride. Whether a relationship exists between the position
of absorption bands of these polymer-supported species and sigma const. for the
substituents in their arylhydrazono moiety has been discussed. Investigation of the
obtained data reveals that both electron-withdrawing and electron-repelling groups cause
bathochromic shift depending on the Hammett's sigma const. of the substituent present.
(List)
9.
M.Y. Abdelaal; "Synthesis of novel ladder polymers of poly (3,4-dihydro-2H-pyran-2methanol)", Journal Polymer Science A: (Chem.), (USA) 40(22), 3909-3915 (2002)
Abstract
Polymers of bis(3,4-dihydro-2H-pyran-2-methyl) esters of oxalic, adipic, and phthalic
acids were prepared at different temps. in the presence of different cationic initiators,
namely, the boron trifluoride/diethyl ether complex system, anhydrous ferric chloride, and
p-toluene sulfonic acid. The obtained polymers were hydrolyzed under basic conditions,
and the polydispersity indexes of these polymers were determined before and after
hydrolysis. The results are discussed to shed some light on the ability to use this anal. to
investigate the precise structure of the obtained polymers and to predict the ability of these
polymers to form ladder or semi-ladder polymers. Characteristics of such polymers were
dependent, to some extent, on the type of crosslinks and the cationic initiators used for
polymerization as well as the reaction temp. It seems possible to optimize the conditions
leading to formation of ladder or semi-ladder polymers of bis(3,4-dihydro-2Hpyran-2-methyl) esters of oxalic acid and adipic acid, respectively. The ladder structure
was confirmed through determination of the polydispersity index before and after
hydrolysis of the polymer formed at different temperatures and through computer-aided
mol. modeling. (List)
10. A.A. Sarhan; A.A. El-Shehawy & M.Y. Abdelaal; "Phase transfer catalyzed reactions of
crosslinked chloromethylated polystyrene with vanillin", Reactive & Functional Polymers
(UK) 50(2), 139-147 (2002)
Abstract
Chloromethylated polystyrene was reacted with vanillin under phase transfer catalyzed
conditions. This reaction was performed under different conditions, including variations of
the phase transfer catalysts, the reaction solvent, the type of base, the reaction time and
temp. In addition, the effect of the reaction technique (i.e., solid-liq.-liq. and
solid-liq.-solid systems) on the reaction conversion was studied. Polymer-supported
vanillin was evaluated for its utilization in polymer analog conversions by performing
condensation reactions of the aldehyde functionality with malononitrile, ethyl
cyanoacetate, cyanoacetamide, cyanothioacetamide, 2-aminophenol, hydrazine hydrate
and hydroxylamine hydrochloride. In all cases, the reactions were followed up by means of
FTIR spectroscopic anal. (List)
11. M.Y. Abdelaal; "Utilization of cellulose triacetate blended membranes for carrier
mediated transport of some metal ions", Journal Applied Polymer Science (USA) 82(8),
2008-15 (2001)
Abstract
In this study, cellulose triacetate was used as a suitable base polymer for polymer-blended
membranes for ion sensing and separation. Polymer-blended membranes were prepared
with the solvent casting technique in the presence of mixed plasticizer and a metal ion
Prof. Dr. Magdy Y. Abdelaal; Chemistry Department, Faculty of Science, KAAU, Jeddah, KSA
(8)
carrier known as an ionophore. 7-Dodecenyl-8-hydroxyquinoline and N,N'-diphenylethyl
Kemp's triacid diamide, in addition to the newly synthesized 8-[N-acetyl-O-(4-tert-Bu
benzyl)-L-tyrosylamino] quinoline, were used as representative examples for ionophores.
The membranes were evaluated through the transport of copper and lead ions into 0.1M
nitric acid as the receiving phase. The concentrations of the investigated metal ions in both
phases were assayed by atomic absorption spectrometry. From this study, it can be
concluded that the efficiency of the membrane, either as an ion-transporting or as an
ion-extracting candidate, is controlled by the amount of the immobilized ionophore, the
immobilization time within the membrane matrix while in contact with the receiving phase,
the nature of the ionophore-metal ion complex, and so on. The carrier-mediated transport
mechanism was also investigated. (List)
12. M.Y. Abdelaal; I.M.M. Kenawy & M.A.H. Hafez; "Chemical modification of
chloromethylated polystyrene with pyridylazo--naphthol", Journal of Applied Polymer
Science (USA) 77(14), 3044-8 (2000)
Abstract
Chloromethylated polystyrene was chem. modified through alkylation of
pyridylazo--naphthol (PAN) in the presence of a phase-transfer catalyst. The chem.
modification was achieved through O-alkylation as well as N-alkylation of PAN, leading
to formation of polymer-supported quaternary ammonium salt in the latter case. Both types
of a polymer-supported PAN moiety were detected by FTIR spectroscopic anal. The
complexation behavior of the polymer-supported PAN as an ion-exchanger toward some
metal ions was studied. Thermogravimetric and differential thermogravimetric analyses
data were used to study the kinetics of the thermal decomposition process of the
ion-exchanger. Some thermodynamic parameters for the ion-exchanger were calculated by
applying the rate theory of the first-order reaction. (List)
13. A.A. Sarhan; M.Y. Abdelaal; M.M. Ali & E.H. Abdel-Latiff, "Reaction of crosslinked
chloromethylated polystyrene with 4-hydroxybenzaldehyde under phase transfer catalyzed
conditions"; Polymer (UK), 40, 233-41(1998)
Abstract
The present work studied factors which may affect phase transfer-catalyzed (PTC)
nucleophilic displacement reactions, including chloromethylated polystyrene as
polymer-supported alkylating agent and 4-hydroxybenzaldehyde as an O-nucleophilic
reagent in presence of representatives for phase transfer catalysts. Some polymer-analogue
conversions using the resulting polymer-supported aldehyde have been carried out. (List)
14. S. Itsuno; A.A. El-Shehawy; M.Y. Abdelaal & K. Ito, "Asymmetric reactions on
polymers: Diastereoselective allylation of polymer-supported chiral imines", New Journal
Chemistry (UK), 775-777 (1998)
Abstract
Reaction of allylzinc reagent with enantiopure imine species attached to polystyrene
proceeded smoothly with perfect diastereoselectivity and in excellent yield to afford
polymer-supported chiral homoallylic amines. (List)
15. A.A. El-Shehawy; M.Y. Abdelaal; K. Watanabe; K. Ito & S. Itsuno, "Enantioselective
allylation of N-(trimethylsilyl)benzaldehyde imine using polymer-supported chiral
allylboron reagents", Tetrahedron: Asymmetry (UK), 8(11), 1731-1734 (1997)
Abstract
Prof. Dr. Magdy Y. Abdelaal; Chemistry Department, Faculty of Science, KAAU, Jeddah, KSA
(9)
Polymer-supported chiral N-(3-hydroxy-4,7,7-trimethylbicyclo[2.2.1]hept-2-yl)benzenesulfonamide derived from cis-3-amino-2-hydroxybornane, styrene and divinylbenzene
was treated with triallylborane, trimethallylborane, and tri(3,3-dimethylallyl)borane,
respectively, to give polymeric allylation agents. N-(Trimethylsilyl)benzaldehyde imine
was allowed to react with the polymeric chiral reagents to afford the corresponding
primary homoallylamines in high yield and good enantioselectivities. (List)
16. M.Y. Abdelaal, "Synthesis and characterization of some oligopolyalkylene-polyamines"
Journal of Applied Polymer Science (USA), 63(8), 1009-1013 (1997)
Abstract
Polyalkylene-polyamines were prepared by 2 different methods. One involved the reaction
of the diamine with a dihalide in the presence of a slightly basic catalyst such as sodium
bicarbonate to give oligopolyalkylene-polyamine hydrochloride, which could be
converted into the free base form by neutralization with ammonium hydroxide. The other
technique involved the reaction of the diamine with a dihalide in the presence of HCl and a
stoichiometric amt. of stannous chloride. The obtained oligomeric products were
characterized by spectroscopy and elemental analyses. (List)
17. E.M. Abdel-Bary; E.B. Moawad; F.M. Helaly; M.Y. Abdelaal & W.F. Rashed,
"Evaluation of some organic compounds as antioxidants in rubber" Polymer Degradation
and Stability (UK), 57, 283-292 (1997)
Abstract
Three different classes of organic compounds, namely triazole, oxazoline and
p-phenylene-diamine derivatives, were synthesized and investigated in natural rubber and
styrene-butadiene rubber mixes and vulcanizates. The efficiency of triazole derivatives
increased with the introduction of electron withdrawing substituents in the para position of
the benzene ring. The only exception is the p-amino derivative which shows a higher
efficiency relative to other substituents. In contrast, the efficiency of p-phenylenediamine
derivatives increased with the increasing inductive effect of the substituents. A correlation
between the Hammett const. and the efficiency of triazole derivatives was established.
(List)
18. A.A. Sarhan; E.M. Afsah; M.Y. Abdelaal & M.R. Ibrahim, "Studies on the alkylation of
polymer-supported ambident anion derived from indane-1,3-dione" Reactive &
Functional Polymers (UK), 32, 231-239 (1997)
Abstract
The behavior of polymer-supported ambident anions derived from 1,3-indanedione I
towards alkylation under various conditions has been studied. Particularly, factors that
may affect the yields of isolated products and their compounds have been considered.
Almost exclusively the di-C-alkylation product could be isolated after relatively long
reaction time. This unusual tendency toward di-C-alkylation is extensively discussed on
the basis of the effect of reduced reaction time on the compound of resulting products in
addition to a comparative study of mono-C- vs. di-C-alkylation in indane-1,3-dione with
the acyclic analogous dibenzoylmethane.
Prof. Dr. Magdy Y. Abdelaal; Chemistry Department, Faculty of Science, KAAU, Jeddah, KSA
Polymer-support
O
Et
_
+
CH2N Et HC
Et
O
(10)
(List)
19. Y.A. Abbas & M.Y. Abdelaal, "Synthesis and characterization of
polydi-(3,4-dihydro-2H-pyran-2-methyl) adipate hydrogel", Polymer Bull. (Ger.), 36,
273-278 (1996)
Abstract
Di(3,4-dihydro-2H-pyran-2-methyl) adipate was synthesized and polymerized using
different cationic initiators. Low-mol.-wt., water-sol. polymers were obtained. The
polymeric samples were characterized and their thermal stability was investigated. Such
polymers can be considered as suitable matrixes for controlled drug delivery by in-vivo
biodegradation. (List)
20. M.Y. Abdelaal & Y.A. Abbas, "Synthesis and characterization of polyesters based on
3,4-dihydro-2H-pyran-2-methanol", Monatshefte für Chemie (Austria), 127, 1131-1136
(1996)
Abstract
Diesters of 3,4-dihydro-2H-pyran-2-yl-methanol with oxalic and phthalic acid were
prepared and polymerized. Boron trifluoride etherate, anhydrous ferric chloride, and
p-toluenesulfonic acid were selected as different cationic coinitiators. The resulting
polymers can be considered as suitable matrixes for controlled drug delivery by in vivo
biodegradation. They were characterized and their thermal behavior was investigated.
(List)
21. E.A. Abdel-Razik; M.M. Ali; M.Y. Abdelaal & A.A. Sarhan, "Homogeneous
photoinduced graft copolymerization of acrylamide onto ABS-copolymer in presence of
4-acetyldiphenyl as photosensitizer.1. Effect of butadiene content", Polymer-Plastic
Technology & Engineering Journal (USA), 35(6), 865-876 (1996)
Abstract
Photoinduced graft copolymerization of acrylamide (AM) onto two types of
acrylonitrile-butadiene-styrene copolymers (ABS) was extensively investigated in
homogeneous media. The grafting process was conducted in chloroform in presence of
4-acetyldiphenyl (4-AD). UV irradiation was used in the range 310 to 460 nm. The UV
spectrum of 4-AD has max at 285 nm and shows n-* transitions. The grafting
parameters, such as wt. conversion, grafting percentage, and grafting efficiency, were
determined as a function of the irradiation time and the concentrations of monomer,
initiator, and substrate. A reverse effect was observed between the grafting percentage and
the butadiene content in ABS copolymers. The rates of graft copolymerization of AM onto
the two types of ABS copolymers were determined. A Trommsdorff effect was observed in
certain systems. The IR spectrum of ABS-g-AM copolymer shows the appearance of a
new peak at 1685 cm-1 that shows the presence of polyacrylamide-grafted chains on the
ABS copolymer backbone. A probable copolymerization mechanism was proposed. (List)
22. M.Y. Abdelaal & S.S. Elmorsy, "The role and utilization of tetrachlorosilane/ ethanol
reagent in crosslinking of poly(p-vinylacetophenone)", Angewandte Makromolekulare
Chemie (Ger.), 233, 15-21 (1995)
Prof. Dr. Magdy Y. Abdelaal; Chemistry Department, Faculty of Science, KAAU, Jeddah, KSA
(11)
Abstract
Polystyrene was modified by acylation to give poly(styrene-co-vinylacetophenone) in a
good yield. The copolymer was treated with SiCl4/EtOH reagent leading to the formation
of triphenylbenzene units, either as crosslinking nodes or as pendent groups, and silyloxy
derivatives of the acetyl groups attached to the styrene units as well as some unreacted
acetyl groups. The percentages of the compounds of all products were determined as well
as silicon content. (List)
23. G.A. Kossmehl; E.M. Abdel-Bary; A.A. Sarhan & M.Y. Abdelaal, "Effect of the
chemical structure of some hydrogels on their characteristic properties.1. Effect of
comonomer composition", Angewandte Makromolekulare Chemie (Ger.), 215, 59-77
(1994)
Abstract
Some hydrogels of different chemical compounds were synthesized using 2-hydroxyethyl
methacrylate, methacrylic acid, acrylic acid, and acrylamide in different ratios and
crosslinked by ethylene dimethacrylate. Effects of the copolymer composition as well as
the type of monomers on some hydrogel characteristics were evaluated. Some
characteristic properties, namely soluble fraction percentage, swelling degree, solution
uptake, and salt uptake were found to be markedly affected by the hydrogel composition.
(List)
24. A.A. Sarhan; M.M. Ali & M.Y. Abdelaal, "Racemic resolution of mandelic acid on
polymers with chiral cavities. 3: Co-operative binding over phenylboronic acid groups and
N-bases", Reactive Polymers (UK), 11, 57-70 (1989)
Abstract
The binding ability of a macroporous polymer-supported phenylboronic acid for mandelic
acid increased markedly in the presence of various N bases. A remarkable improvement of
the efficiency for racemic resolution of D,L-mandelic acid on such polymers was achieved
if both of the co-operating functionalities were introduced in a fixed stereochemical
arrangement within the chiral polymeric cavities with a specific shape corresponding to the
chem. structure of a template mol., i.e., L-mandelic acid. Thus L-mandelic
acid-1,2-O-(4-vinylphenyl)boronate was copolymerized with a molar quantity of
4-vinylpyridine to highly crosslinked macroporous polymers. The resulting polymers,
after removal of the template, exhibited separation factors of <1.29. (List)
25. A.A. Sarhan; M.M. Abou-Elzahab & M.Y. Abdelaal, "Preliminary studies on
polymer-supported protection of the functions of - and -hydroxycarboxylic acids",
Mansoura Science Bulletin (Egypt), 16(1), 363-80 (1989).
Abstract
To study the utility of a polymer-supported phenylboronic acid (P1) for the protection of
the functions of -, and -hydroxycarboxylic acids, the model compounds
4-hydroxymandelic acid (2), 4-carboxymandelic acid (3) and 4-aminosalicylic acid (12)
were needed. Extensive trials for the preparation of 2 and 3 were carried out, while
commercially available 12 could be used. 12 reacted with P1 to produce a
polymer-supported six-membered ring boronate of the type P4. On acylation of P4 with
4-nitrobenzoyl chloride, the polymer-supported product P5 was obtained. On hydrolysis of
P5, the selective acylated product 4-(4-nitrobenzamido-)salicylic acid (13) could be splitt
off and isolated in a pure form. (List)
Prof. Dr. Magdy Y. Abdelaal; Chemistry Department, Faculty of Science, KAAU, Jeddah, KSA
(12)
26. A.A. Sarhan; M.M. Ali & M.Y. Abdelaal, "Utilization of macroporous polymer
containing phenylboronic acid groups in the solid-phase synthesis", Journal für praktische
Chemie (Ger.), 330(1), 71-8 (1988).
Abstract
Polymerization of divinylbenzene with vinylphenylborolane I gave 100%
polymer-supported borolane II (Z = polymerized divinylbenzene), which on hydrolysis
with MeOH-H2O gave 97.5% title compound, 4-ZC6H4B(OH)2 (III). Formation of III was
confirmed by ethylene glycol intake capacity measurements. Oxidation of III with
H2O2-NaOH gave 53% 4-ZC6H4OH which was acylated in MeCN or pyridine to give
4-ZC6H4OCOR (R = H, 4-O2NC6H4). Polymer-supported diol protection by III was also
investigated.
CH2 CH
B
O
O
I
Z
B
O
O
II
(List)
27. A.A. Sarhan; M.M. Ali & M.Y. Abdelaal, "Effect of covering and N-bases on reactions of
macroporous polymer-supported phenylboronic acid with mandelic acid", Mansoura
Science Bulletin (Egypt), 15(2), 443-59 (1988)
Abstract
The equilibrium of a highly crosslinked macroporous polymer containing phenylboronic
acid groups, with mandelic acid was studied. A correlation between the binding ability of
the polymer for mandelic acid and the extent of polymer covering with substrate reflected
the inhomogenity of the polymeric matrix. In the presence of N-bases a marked increase of
binding ability was observed. In the series pyridine, 4-dimethylaminopyridine and
piperidine a linear relationship with respect to the corresponding basic strength was found.
In case of using 2,6-di-tert.-butyl-4-methylpyridine, the increase of binding ability was
more than its basic strength would predict. The factors are discussed, which may influence
the stability and stereochemical requirements of suggested structures of the type P6, P7,
P8 and P9. It is concluded that such factors should also affect the specificity for racemic
resolution of D,L-mandelic acid on polymers containing the phenylboronic acid groups
into chiral cavities with specific shape (P1). (List)
28. A.A. Sarhan; M.M. Ali & M.Y. Abdelaal, "Formation and stability of cyclic esters from a
polymer-supported phenylboronic acid and diol system in presence of organic bases",
Mansoura Science Bulletin (Egypt), 15(2), 375-87 (1988).
Abstract
The equilibrium reaction of a highly crosslinked macroporous polymer-supported
phenylboronic acid with glycerol, as representative for diols, and/or triols in methanol and
in the presence of the organic bases pyridine and piperidine, was studied. The position of
equilibrium was readily determined by periodate titration of unreacted glycerol after its
separation from the polymer-bound product by simple filtration. The binding ability of the
polymer for glycerol increased with increasing concentration of the base as well as with
the increase of basic strength. Taking these facts into consideration, it is extremely
possible that the stability of cyclic esters between diols and the phenylboronic acid group
can be raised by coordination with organic bases via Lewis acid-Lewis base interaction.
(List)