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Melt blends of SAN with SAN‐ graft ‐polybutadiene (PB)
Author(s) -
Kim B. K.,
Shin G. S.
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.1993.070480602
Subject(s) - polybutadiene , materials science , glass transition , viscoelasticity , composite material , viscosity , morphology (biology) , polymer chemistry , brittleness , yield (engineering) , copolymer , polymer , genetics , biology
Abstract Melt blends of SAN with SAN‐ graft ‐polybutadiene (PB) ( g ‐ABS) were prepared in a Brabender plasticorder. The effect of g ‐ABS on the morphology and mechanical and viscoelastic properties of the blends was studied up to 60 wt % g ‐ABS. The brittle‐tough (BT) transition occurred around 20 wt % g ‐ABS, and the viscosity increased monotonically with g ‐ABS, showing yield behavior at ≥ 20%. The lower and higher glass transition temperatures ( T g ) of g ‐ABS, each corresponding to the T g of PB and grafted SAN, decreased and increased with the addition of free SAN, and this was interpreted in terms of graft SAN—PB phase separation. © 1993 John Wiley & Sons, Inc.