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Miscible and immiscible blends of ABS with PMMA. I. Morphology and rheology
Author(s) -
Kim Young Jin,
Shin Gui Sook,
Lee In Tae,
Kim Byung Kyu
Publication year - 1993
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.1993.070470209
Subject(s) - rheology , acrylonitrile , materials science , phase (matter) , morphology (biology) , natural rubber , compounding , polymer blend , miscibility , polymer chemistry , composite material , chemical engineering , copolymer , polymer , chemistry , organic chemistry , biology , engineering , genetics
Abstract Melt blends of ABS and PMMA were prepared using three types of ABS having different acrylonitrile (AN) content, and PMMAs with different MW. From TEM micrographs, it was found that ABSs containing 24 and 27 wt % AN were miscible, and the one containing 35 wt % AN was immiscible with PMMA. Morphologically miscible blends showed welldefined semicircles in Cole—Cole plots, whereas immiscible ones showed immiscible drifts from the semicircle. In addition, as the compounding temperature increases, the dispersed PMMA phase became stratified, and more rubber particles, especially larger ones, migrated toward the PMMA phase. Miscible blends gave viscosities lower than additivity would predict, whereas immiscible ones gave positive (ABS‐rich phase) and negative (PMMA‐rich phase) deviations from the additivity. © 1993 John Wiley & Sons, Inc.