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Silicone‐toughened poly(styrene‐co‐acrylonitrile)
Author(s) -
Saam John C.,
Mettler Claudia M.,
Falender James R.,
Dill Timothy J.
Publication year - 1979
Publication title -
journal of applied polymer science
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.575
H-Index - 166
eISSN - 1097-4628
pISSN - 0021-8995
DOI - 10.1002/app.1979.070240117
Subject(s) - elastomer , materials science , acrylonitrile , polybutadiene , composite material , grafting , styrene , polymer chemistry , silicone , copolymer , matrix (chemical analysis) , polymer
Uniform dispersions of high‐molecular‐weight poly(dimethylsiloxane) (PDMS) in a matrix of poly(styrene‐co‐acrylonitrile) (SAN) are prepared where the degree of crosslinking in the elastomer and its extent of grafting to the SAN matrix are controlled. This gives an impact resistant plastic at ambient and low temperatures which is resistant to outdoor exposure. The T g of PDMS is shown to be greatly reduced when grafted to the SAN matrix. Plots of impact resistance versus shift factor a T of the elastomer added for toughening coincide for PDMS and polybutadiene over a 150°C temperature range.