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Reactive compatibilization of polystyrene/poly(ethylene–co–vinyl acetate) (EVA) blends
Author(s) -
Soares Bluma G.,
Cario Francisco O.
Publication year - 2005
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.21856
Subject(s) - compatibilization , materials science , copolymer , ethylene vinyl acetate , vinyl acetate , polystyrene , ultimate tensile strength , polymer blend , ethylene , polymer chemistry , styrene , composite material , chemical engineering , polymer , chemistry , organic chemistry , catalysis , engineering
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