Preparation And Properties Of Functionalized
Polyorganosiloxanes
Yahaya, GO; Brisdon, BJ; Maxwell, M; England, R
JOHN WILEY SONS INC, JOURNAL OF APPLIED POLYMER SCIENCE; pp: 808-817;
Vol: 82
King Fahd University of Petroleum & Minerals
http://www.kfupm.edu.sa
Summary
A series of linear functionalized polyorganosiloxanes of the type
Me3SiO[MeSiO(CH2)(n)R](x)(Me2SiO)(y)SiMe3, where n = 2, R = -(CH2)NMe2; n
= 1, R = -(CH2)OEt; n = 4, R = -(CH2)COOEt; n = 3, R = -(CH2)Me, have been
prepared and characterized. Functional group loadings of similar to4 mol % (x = 1, y
= 25), similar to 11 mol % (x = 3, y = 23), and similar to 30 mol % (x = 8, y = 18)
were obtained by reacting commercially available copolymers Me3SiO(MeSi{H}
O)(x)(Me2SiO)(y)SiMe3 with the appropriate ratios of (x):(y), with the required
quantities of HO(CH2)(n)R, using dichloro(1,5-cyclooctadiene)platinum(II) as
catalyst. Amine, ether, ester, and alkyl functionalized siloxanes were obtained in good
yields after purification, and each fluid polymer has been characterized by H-1 and C13-nuclear magnetic resonance (NMR), and Fourier transform infrared (FTIR)
spectral measurements, elemental analysis, viscosity, surface tension, and density
measurements. The functionalized polymers exhibit Newtonian behavior over the
range of shear rates 0.4-79.4 s(-1), and significant viscosity enhancements were
observed for all functionalized polymers compared with poly(dimethylsiloxane) fluids
of similar chain lengths. The functionalized siloxanes exhibited in almost all cases an
increase in both viscosity and density as the functional group loading increased. The
surface tensions of the polymers have also been determined and lie within the range
18.8-22.3 mN m(-1). (C) 2001 John Wiley Sons, Inc.
References:
1.
2.
©
ABEDALI SS, 1987, J CHEM SOC CHEM COMM, P1565
ABEDALI SS, 1989, MACROMOLECULES, V22, P3969
Copyright: King Fahd University of Petroleum & Minerals; http://www.kfupm.edu.sa
3.
4.
5.
6.
7.
8.
9.
10.
11.
12.
13.
14.
15.
16.
17.
18.
19.
20.
21.
22.
23.
24.
25.
26.
27.
28.
29.
30.
31.
ASHWORTH AJ, 1991, J MEMBRANE SCI, V56, P217
BARTON TJ, 1990, ADV CHEM SERIES, V224, CH1
BENNETT M, 1997, J MEMBRANE SCI, V137, P63
BRISDON BJ, 1985, J CHEM SOC DA, P2191
BRISDON BJ, 1993, J CHEM TECHNOL BIOT, V58, P303
BRISDON BJ, 1993, TETRAHEDRON, V49, P1103
CABRERA I, 1987, ANGEW CHEM INT EDIT, V26, P1178
DREW D, 1972, INORG SYNTH, V13, P47
DUCZMAL W, 1986, J ORGANOMET CHEM, V85, P317
ENGLAND R, 1990, BIOTECHNOL PROGR, V6, P93
GILL JS, 1993, J MEMBRANE SCI, V76, P157
HILL A, 1993, MACROMOLECULES, V26, P4521
KACZMARSKI JP, 1993, MACROMOLECULES, V26, P5149
KAISER A, 1985, J MEMBRANE SCI, V22, P257
LANDOLL LM, 1982, J POLYM SCI POL CHEM, V20, P443
LANDOLL LM, 1989, 8003241, NL
MCCORMICK CL, 1988, POLYMER, V29, P731
NOLL W, 1968, CHEM TECHNOLOGY SILI
OHYANAGI M, 1985, POLYM COMMUN, V26, P249
OWEN MJ, 1990, ADV CHEM SER, V224, P705
SHULZ DN, 1987, POLYMER, V28, P2110
SPINDLER R, 1988, MACROMOLECULES, V21, P648
VALINT PL, 1988, MACROMOLECULES, V21, P175
WANG TK, 1988, POLYM B, V20, P577
YAHAYA GO, 1998, THESIS U BATH BATH U
YAHYA GO, 1994, THESIS KING FAHD U P
YAHYA GO, 1995, J APPL POLYM SCI, V57, P343
YILGOR I, 1988, ADV POLYM SCI, V86, P1
ZELDIN M, 1988, ORGANOMETALLICS, V7, P470
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