Premium
Effects of interfacial adhesion on properties of polypropylene/Wollastonite composites
Author(s) -
Chen Minjie,
Wan Chaoying,
Shou Wenjuan,
Zhang Yinxi,
Zhang Yong,
Zhang Jianmin
Publication year - 2007
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.23535
Subject(s) - materials science , composite material , differential scanning calorimetry , dynamic mechanical analysis , polypropylene , crystallinity , wollastonite , maleic anhydride , adhesion , ultimate tensile strength , crystallization , scanning electron microscope , polymer , chemical engineering , copolymer , chemistry , raw material , organic chemistry , engineering , thermodynamics , physics
Wollastonite reinforced polypropylene (PP/CaSiO 3 ) composites were prepared by melt extrusion. A silane coupling agent and a maleic anhydride grafted PP (PP‐ g ‐MA) were used to increase the interfacial adhesion between the filler and the matrix. The increased adhesion observed by scanning electron microscopy (SEM) resulted in improved mechanical properties. A model was applied to describe the relationship between the interfacial adhesion and tensile properties of PP/CaSiO 3 composites. There is stronger interfacial adhesion between silane‐treated CaSiO 3 and polymer matrix containing PP‐ g ‐MA as a modifier. Results of dynamic mechanical thermal analysis (DMTA) showed that stronger interfacial adhesion led to higher storage modulus. The influence of CaSiO 3 particles on the crystallization of PP was studied by using differential scanning calorimetry (DSC). The introduction of CaSiO 3 particles does not affect the crystallization temperature and crystallinity of PP matrix significantly. © 2007 Wiley Periodicals, Inc. J Appl Polym Sci, 2008