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Reactive compatibilization of polystyrene/poly(ethylene–co–vinyl acetate) (EVA) blends

✍ Scribed by Bluma G. Soares; Francisco O. Cario Jr.

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
651 KB
Volume
99
Category
Article
ISSN
0021-8995

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✦ Synopsis

Abstract

A reactive compatibilizer, mercapto‐functionalized EVA (EVASH), in combination with styrene‐butadiene block copolymer (SBS), was used to compatibilize the blends of polystyrene (PS) and ethylene–vinyl acetate copolymer (EVA). The reactive compatibilization was confirmed by the presence of insoluble material and from dynamic‐mechanical analysis. In addition to a more uniform morphology with small phase size, the compatibilization also provided excellent stabilization of the morphology, with an almost complete suppression of coarsening during annealing. As a consequence, a substantial increase on the elongation at break without significant influence on ultimate tensile strength was achieved for compatibilized blends with different compositions. © 2005 Wiley Periodicals, Inc. J Appl Polym Sci 99: 14–22, 2006

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