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Morphology and physical properties of SAN/NBR blends: The effect of AN content and melt viscosity of SAN
Author(s) -
Ahn Sang Jun,
Lee Kwan Hee,
Kim Byung Kyu,
Jeong Han Mo
Publication year - 1999
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/(sici)1097-4628(19990808)73:6<935::aid-app10>3.0.co;2-q
Subject(s) - acrylonitrile , materials science , viscosity , composite material , elongation , natural rubber , dispersion (optics) , phase (matter) , shear rate , nitrile rubber , polymer blend , izod impact strength test , yield (engineering) , polymer chemistry , polymer , ultimate tensile strength , copolymer , chemistry , organic chemistry , physics , optics
To study the effect of dispersed poly(butadiene‐ co ‐acrylonitrile) (NBR) rubber size on the physical properties of poly(styrene‐ co ‐acrylonitrile) (SAN)/NBR blends, SANs with various melt viscosities and acrylonitrile (AN) contents were examined. The dispersed size of NBR, whose AN content is 30 wt %, was reduced as the melt viscosity of the SAN matrix was increased or as the AN content of the SAN matrix was reduced in the range of 19–32 wt %. As the melt viscosity of the SAN matrix was increased, the damping peak of the NBR phase moved to a higher temperature, and as the AN content of SAN was reduced, the damping peak of the SAN phase moved to a lower temperature. Higher values of impact strength and elongation at break and reduced yield behavior at a low shear rate were observed at a finer dispersion of NBR. © 1999 John Wiley & Sons, Inc. J Appl Polym Sci 73: 935–941, 1999