Premium
Effects of calcium carbonate and compounding sequence on the phase morphology and properties of maleic anhydride‐grafted polypropylene compatibilized polyamide 6/polypropylene blend
Author(s) -
Wang Li,
Ling XueLiang,
Shi Chen,
Guo ZhaoXia,
Yu Jian
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.37535
Subject(s) - materials science , polypropylene , maleic anhydride , heat deflection temperature , calcium carbonate , polyamide , morphology (biology) , phase (matter) , polymer blend , polymer chemistry , compounding , composite material , thermogravimetric analysis , organoclay , scanning electron microscope , chemical engineering , copolymer , polymer , izod impact strength test , chemistry , organic chemistry , genetics , biology , engineering , ultimate tensile strength
Effects of calcium carbonate (CaCO 3 ) and compounding sequence on the phase morphology of maleic anhydride‐grafted polypropylene (MAPP) compatibilized polyamide 6 (PA6)/polypropylene (PP) blend were investigated. The morphology in the subskin and core regions of injection molded specimen was observed using scanning electron microscopy, which shows great changes due to the incorporation of CaCO 3 . With the addition of CaCO 3 (25 phr), oriented “ginger‐like” network (directly mixing) or loose elongated network (mixing PA6, PP, and MAPP with premixed PA6/CaCO 3 masterbatch) of PP phase is formed in the core region, instead of spherical dispersed PP domains for unfilled blend. The distribution of CaCO 3 in PA6 and PP phases was determined by selectively dissolving PA6 phase and thermogravimetric analysis of PP phase. A possible mechanism is proposed based on the morphology evolution process to interpret the morphological differences. The mechanical properties and heat distortion temperature of the materials were tested and correlated with the morphology formed. © 2012 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013