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

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...

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Bibliographic Details
Published in:Journal of applied polymer science 2006-01, Vol.99 (1), p.14-22
Main Authors: Soares, Bluma G., Cario Jr, Francisco O.
Format: Article
Language:English
Subjects:
Applied sciences
blends
Exact sciences and technology
Mechanical properties
morphology
Organic polymers
Physicochemistry of polymers
polystyrene
Properties and characterization
reactive compatibilization
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Summary: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
ISSN:0021-8995
1097-4628
DOI:10.1002/app.21856