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Physical aging of poly(acrylonitrile‐butadiene‐styrene). I. Dynamic mechanical measurements
Author(s) -
Wyzgoski M. G.
Publication year - 1980
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.1980.070250718
Subject(s) - glass transition , materials science , acrylonitrile , acrylonitrile butadiene styrene , composite material , ultimate tensile strength , styrene , elongation , dynamic mechanical analysis , polymer , polymer chemistry , copolymer
Injection‐ and compression‐molded poly(acrylonitrile–butadiene–styrene) (ABS) samples were aged at 40 to 90°C in a nitrogen atmosphere. Dynamic mechanical measurements show that aging restricts molecular mobility in the glassy poly(styrene–acrylonitrile) matrix of ABS. The α, or glass transition, of the matrix is affected only by aging at higher temperatures such as 90°C. On the other hand, the β transition is suppressed to some extent by aging at all temperatures from 40 to 90°C parallels the loss of tensile elongation previously reported. These results indicate that the effects of aging on the glassy phase are unique for different aging temperatures. Therefore, a simple time temperature superposition may not exist for the effects of physical aging on ABS.