STUDIES ON HEXOLIC ANHYDRIDE BASED POLYESTERS .1.
CHARACTERIZATION AND SEQUENCE DETERMINATION IN
HEXOLIC BASED COPOLYESTERS BY H-1 AND C-13-NMR
By:SIVASAMY, P (SIVASAMY, P); PALANIANDAVAR, M (PALANIANDAVAR, M); VIJAYAKUMAR,
CT (VIJAYAKUMAR, CT)
ANGEWANDTE MAKROMOLEKULARE CHEMIE
Volume: 187
Pages: 169-185
DOI: 10.1002/apmc.1991.051870115
Published: MAR 1991
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Abstract
The copolyesters and terpolyesters containing maleic or phthalic anhydride and 5,6,7,8,10,10hexachloro-3a,4,4a,5,8,8a,9,9a-octahydro-5,8-methannonaphtho-[2,3-c]-furan-1,3-dione ('hexolic
anhydride') with 2-butene-1,4-diol and 2,3-dichloro-2-butene-1,4-diol are synthesized by azeotropic
condensation technique. The H-1- and C-13-NMR spectra of these polyesters are recorded and the
chemical shifts for the corresponding nuclear magnetic atoms are assigned. A good correlation exists
between the observed and theoretically calculated chemical shift values. The sequence distribution,
the randomness factor, and the number-average sequence length of each anhydride monomer unit
are calculated using H-1- and C-13-NMR spectra. It is found that both methods give identical results
for the same copolyesters and terpolyesters. The results indicate that the copolyesters follow
Bernoullian statistics and the terpolyesters correspond to alternative copolyesters.
Author Information
Addresses:
[ 1 ] UNIV MIN & MET LEOBEN,INST CHEM KUNSTSTOFFE,A-8700 LEOBEN,AUSTRIA
[ 2 ] AYYA NADAR JANAKI AMMAL COLL,POSTGRAD DEPT CHEM,SIVAKASI 626123,INDIA
[ 3 ] BHARATHIDASAN UNIV,DEPT CHEM,THIRUCHIRAPPALLI 620024,INDIA
Publisher
HUTHIG & WEPF VERLAG, AUF DEM WOLF 4 FX#001-41-61-317-94-11, CH-4052 BASEL,
SWITZERLAND
Categories / Classification
Research Areas:Polymer Science
Web of Science Categories:Polymer Science
Document Information
Document Type:Article
Language:English
Accession Number: WOS:A1991FH03400015
ISSN: 0003-3146
Other Information
IDS Number: FH034
Cited References in Web of Science Core Collection: 19
Times Cited in Web of Science Core Collection: 3