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Synthesis and Characterization of Phenyl Modified PDMS/PHMS Copolymers
Author(s) -
Yang MeiHui,
Lin HsinTso,
Lin ChihChun
Publication year - 2003
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.200300007
Subject(s) - copolymer , chemistry , moiety , triflic acid , polymer chemistry , polymerization , polydimethylsiloxane , thermogravimetric analysis , proton nmr , characterization (materials science) , organic chemistry , polymer , catalysis , nanotechnology , materials science
A series of polydimethylsiloxane (PDMS)/polyhydrogenmethylsiloxane (PHMS)/polymethylphenylsiloxane (PMPS) random copolymers with different phenyl contents were synthesized in one step through triflic acid‐catalyzed ring‐opening polymerization of cyclic comonomers and characterized by GPC, IR and NMR. Sequential structures of the random copolymers were determined by 29 Si‐NMR spectroscopy. Thermal properties of these copolymers were studied by DSC and TGA. The effect of phenyl moiety on the thermal properties of the copolymers was discussed. The refractive index (n D ) increased regularly with the introducing of phenyl‐functionality as expected.