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Morphological, thermal, and mechanical properties of polypropylene/polycarbonate blend
Author(s) -
Zhihui Yin,
Xiaomin Zhang,
Yajie Zhang,
Jinghua Yin
Publication year - 1997
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/(sici)1097-4628(19970328)63:13<1857::aid-app19>3.0.co;2-v
Subject(s) - polycarbonate , materials science , polypropylene , glycidyl methacrylate , composite material , plastics extrusion , crystallization , polymer blend , phase (matter) , thermal stability , polymer chemistry , polymer , chemical engineering , copolymer , chemistry , organic chemistry , engineering
This work deals with the effect of compatibilizer on the morphological, thermal, rheological, and mechanical properties of polypropylene/polycarbonate (PP/ PC) blends. The blends, containing between 0 to 30 vol % of polycarbonate and a compatibilizer, were prepared by means of a twin‐screw extruder. The compatibilizer was produced by grafting glycidyl methacrylate (GMA) onto polypropylene in the molten state. Blend morphologies were controlled by adding PP‐ g ‐GMA as compatibilizer during melt processing, thus changing dispersion and interfacial adhesion of the polycarbonate phase. With PP‐ g ‐GMA, volume fractions increased from 2.5 to 20, and much finer dispersions of discrete polycarbonate phase with average domain sizes decreased from 35 to 3 μm were obtained. The WAXD spectra showed that the crystal structure of neat PP was different from that in blends. The DSC results suggested that the degree of crystallization of PP in blends decreased as PC content and compatibilizer increased. The mechanical properties significantly changed after addition of PP‐ g ‐GMA. © 1997 John Wiley & Sons, Inc. J Appl Polym Sci 63: 1857–1863, 1997