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Synthesis and Characterization of New Polymer Systems Containing 4‐Silylmethylstyrene Units
Author(s) -
Mahkam Mehrdad,
Assadi Mohammad Galeh,
Tajrezaiy Zohre
Publication year - 2007
Publication title -
journal of the chinese chemical society
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.329
H-Index - 45
eISSN - 2192-6549
pISSN - 0009-4536
DOI - 10.1002/jccs.200700108
Subject(s) - chemistry , polymer chemistry , monomer , copolymer , methacrylate , polymer , glass transition , methacrylic acid , silylation , covalent bond , radical polymerization , organic chemistry , catalysis
A series of terpolymers containing silyl pendant groups were prepared by free radical cross‐linking copolymerization. Et 3 Si and HMe 2 Si were covalently linked with 4‐vinylbenzyl and abbreviated as TESiMSt and DMSiMSt, respectively. Et 3 Si was covalently linked with 2‐hydroxyethyl methacrylate (HEMA). The silyl‐linked HEMA are abbreviated as TESiEMA. Free radical terpolymerization of the methacrylic acid (MAA) with different molar ratios of organosilyl monomers was carried out at 60–70 °C. The compositions of the polymers were determined by FT‐IR spectroscopy and 1 H‐NMR. The glass transition temperature (Tg) of the polymers was determined calorimetrically. The study of DSC curves showed that incorporation of monomers with cyclic units in polymer chains increases the rigidity of terpolymers and the Tg value is subsequently increased.