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Effect of acrylic acid content in poly(ethylene-ran-acrylic acid) on the morphology and mechanical properties of poly(ethylene-ran-acrylic acid)/polystyrene blends compatibilized by poly(styrene-ran-glycidyl methacrylate)

Title
Effect of acrylic acid content in poly(ethylene-ran-acrylic acid) on the morphology and mechanical properties of poly(ethylene-ran-acrylic acid)/polystyrene blends compatibilized by poly(styrene-ran-glycidyl methacrylate)
Authors
Kim, SKim, JKPark, CE
POSTECH Authors
Kim, JKPark, CE
Date Issued
Jan-1997
Publisher
ELSEVIER SCI LTD
Abstract
Three poly(ethylene-ran-acrylic acid)s (PE-AAs) with different amounts of acrylic acid but exhibiting similar rheological properties were studied to investigate the effect of acrylic acid content in PE-AAs on the morphology and mechanical properties of PE-AA/polystyrene (PS) blend compatibilized by poly(styrene-ran-glycidyl methacrylate) (PS-GMA). From morphological observations, there appears to be an optimum amount of acrylic acid in PE-AA that effectively reduces the dispersed domain size in PE-AA/PS blend systems. The existence of an optimum value is due to the combined effects of a sufficient reaction near the interface giving enough amounts of graft copolymers as a compatibilizer between PE-AA and PS, and fast diffusion of reactive species toward
he interface. However, the tensile strength (sigma(b)) and the elongation at break (epsilon(b)) for these blend systems steadily increased with an increase in the amount of acrylic acid in PE-AA. By increasing the amount of PS-GMA, sigma(b) and epsilon(b) for all blend systems increased rapidly, and then levelled off. Impact strength of these blend systems was investigated by varying them amount of acrylic acid in PE-AA. (C) 1997 Elsevier Science Ltd.
Keywords
reactive compatibilization; functional group content; poly(ethylene-ran-acrylic acid); TOUGHENED ALIPHATIC POLYAMIDES; POLYMER BLENDS; REACTIVE COMPATIBILIZATION; BLOCK COPOLYMERS; POLYSTYRENE; BEHAVIOR; PHASE; ANHYDRIDE; INTERFACE; NYLON-6,6
URI
http://oasis.postech.ac.kr/handle/2014.oak/21333
ISSN
0032-3861
Article Type
Article
Citation
POLYMER, vol. 38, no. 9, page. 2113 - 2119, 1997-01
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 KIM, JIN KON
Dept. of Chemical Enginrg
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