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Siloxane‐poly(Methylmethacrylate) amphoteric blends
Author(s) -
Blahovici T. F.,
Brown G. R.,
StPierre L. E.
Publication year - 1982
Publication title -
polymer engineering and science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.503
H-Index - 111
eISSN - 1548-2634
pISSN - 0032-3888
DOI - 10.1002/pen.760221712
Subject(s) - miscibility , copolymer , materials science , siloxane , polymer chemistry , glass transition , methyl methacrylate , methacrylate , chemical engineering , polymer science , composite material , polymer , engineering
Poly([4‐(methacryloyloxy) butyl]pentamethyldisiloxane), PMBPD, has been prepared for the first time. At the weight average molecular weight of 55,900, it is a clear, viscous liquid with a glass transition temperature, T g , of 236K. Copolymers with methylmethacrylate have also been prepared. The homo‐and copolymers, all of which have methacrylate backbones with pendant siloxane groups, were blended with poly(methyl‐methacrylate), PMMA. Using the existence of a single T g as a definition of miscibility, it was found that blends of either PMMA or PMBPD with random copolymers are miscible. However, in spite of a clear appearance, the blend of the two horriopolymers were found to have two distinct T g s.