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Effect of maleated EVA on compatibility and toughness of PETG/EVA blend
Author(s) -
Park Hae Youn,
Hwang Sung Wook,
Ryu Hee Chang,
Kim Sang Woo,
Seo Kwan Ho
Publication year - 2012
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.37950
Subject(s) - materials science , composite material , maleic anhydride , ethylene vinyl acetate , toughness , copolymer , izod impact strength test , compatibilization , particle size , compatibility (geochemistry) , elastomer , polymer blend , polymer , chemical engineering , ultimate tensile strength , engineering
Maleic anhydride (MAH) grafted onto ethylene vinyl acetate copolymer (EVA), mEVA (modified EVA) was blended with poly(ethylene glycol‐ co ‐cyclohexane‐1,4‐dimethanol terephthalate) (PETG) with various mEVA and EVA (unmodified) content in the internal mixer. The effect of reactive compatibilizer to decrease the dispersed particle diameter was observed. The brittle–ductile transition was found at about d n : 0.37 µm and d v : 0.55 µm of particle diameter, a critical particle diameter, regardless of EVA content, and the blend was also toughened at above the critical particle diameter regardless of dispersed EVA content and compatibility. The toughening mechanism and the effect of the particle diameter on the impact strength of the blend were investigated by morphological observation, and it was found that the toughening of the PETG/EVA blend system resulted from the shear deformation, induced by cavitation of dispersed EVA particles. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013