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Poly(2,2‐dimethyltrimethylene carbonate)‐ block ‐poly(dimethylsiloxane)‐ block ‐poly(2,2‐dimethyltrimethylene carbonate). Synthesis and thermal properties
Author(s) -
Müller Achim J.,
Keul Helmut,
Höcker Hartwing
Publication year - 1994
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/pi.1994.210330211
Subject(s) - copolymer , polymer chemistry , polymerization , carbonate , materials science , ring opening polymerization , depolymerization , thermal stability , anionic addition polymerization , chemistry , polymer , organic chemistry , composite material , metallurgy
Lithium salts of hydroxytelechelic poly(dimethylsiloxane) [poly‐(DMS)] were used as initiators for the anionic ring‐opening polymerization of 2,2‐dimethyltrimethylene carbonate (DTC). Triblock copolymers were obtained in high yields. Complexation of the active site in DTC polymerization by the poly(DMS) chain leads to a decrease in polymerization rate. The thermal properties of the copolymers of different compositions were determined. Catalysed thermal degradation of the block copolymers leads to cyclic oligomers D n and DTC upon ring‐closing depolymerization.