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Synthesis and characterization of a novel terephthalate‐bridged ladderlike polymethylsiloxane
Author(s) -
Liu Chunqing,
Liu Zhihua,
Liu Yang,
Xie Ping,
Zhang Rongben
Publication year - 2000
Publication title -
polymer international
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.592
H-Index - 105
eISSN - 1097-0126
pISSN - 0959-8103
DOI - 10.1002/1097-0126(200012)49:12<1658::aid-pi587>3.0.co;2-m
Subject(s) - hydrosilylation , monomer , materials science , polymer chemistry , condensation polymer , gel permeation chromatography , polymer , polymerization , differential scanning calorimetry , fourier transform infrared spectroscopy , chemical engineering , organic chemistry , catalysis , chemistry , composite material , physics , engineering , thermodynamics
A novel soluble terephthalate‐bridged ladderlike polymethylsiloxane was synthesized successfully by stepwise coupling polymerization in three steps, including hydrosilylation coupling, hydrolysis and polycondensation. The bis(3‐methyldichlorosilylpropyl) terephthalate monomer was first synthesized by hydrosilylation reaction in the presence of dicyclopentadienylplatinum(II) chloride (Cp 2 PtCl 2 ) catalyst. The structures of the monomer and the polymer were characterized by FTIR, 1 H NMR, 13 C NMR and 29 Si NMR spectroscopy, mass spectrometry, X‐ray diffraction, differential scanning calorimetry, vapour pressure osmometry and gel permeation chromatography. Characterization data indicate that the synthesized polymer possesses an ordered ladderlike structure. © 2000 Society of Chemical Industry