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Morphology and physical properties of SAN/NBR blends: The effect of AN content in NBR
Author(s) -
Ahn Sang Jun,
Lee Kwan Hee,
Kim Byung Kyu,
Jeong Han Mo
Publication year - 2000
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 - 10.1002/1097-4628(20001209)78:11<1861::aid-app20>3.0.co;2-f
Subject(s) - miscibility , acrylonitrile , materials science , differential scanning calorimetry , morphology (biology) , composite material , polymer chemistry , polymer blend , scanning electron microscope , polymer , copolymer , physics , genetics , biology , thermodynamics
Poly(styrene‐ co ‐acrylonitrile) (SAN), of which the content of acrylonitrile (AN) repeating unit is 32 wt % (SAN32), was blended with poly(butadiene‐ co ‐acrylonitrile) (NBR). The effects of AN repeating unit content in NBR on the miscibility, morphology, and physical properties of SAN32/NBR (70/30 by weight) blends were studied. Differential scanning calorimetry and the morphology observed by transmission electron microscopy showed that the miscibility between SAN32 and NBR was increased as the AN content in NBR was increased up to 50 wt %. The impact strength and some other mechanical properties of the blends had the maximum value when the AN content in NBR was 34 wt %. In the measurement of viscoelasticity at melt state, SAN32/NBR blends showed yield behavior at low shear rate, and this behavior was most evident when the AN content in NBR was 34 wt %. © 2000 John Wiley & Sons, Inc. J Appl Polym Sci 78: 1861–1868, 2000