Melting and crystallization behaviors, morphology, and mechanical properties of β-polypropylene/polypropylene-graft-maleic anhydride/calcium sulfate whisker composites
作者： Qiang Dou , Jiawei Duan
DOI: 10.1002/PC.23391
关键词: Flexural modulus 、 Maleic anhydride 、 Polypropylene 、 Ultimate tensile strength 、 Differential scanning calorimetry 、 Composite material 、 Whisker 、 Polarized light microscopy 、 Crystallization 、 Materials science
摘要: The melting and crystallization behaviors, morphology, mechanical properties of polypropylene (PP)/surface-treated calcium sulfate (CaSO4) whisker (T-CSW), β-PP/T-CSW, β-PP/polypropylene-graft-maleic anhydride (PP-g-MAH)/T-CSW composites had been investigated via differential scanning calorimetry (DSC), wide angle X-ray diffraction (WAXD), polarized light microscopy (PLM), electron (SEM), tests. We found that T-CSW was an α-nucleating agent increased the temperatures PP, but PP-g-MAH high loadings weakly negative effects on rates PP. restrained formation β-spherulites, spherulitic size decreased in composites. improved compatibility adhesion between matrix. notched impact strength improved, tensile enhanced at low levels T-CSW, while flexural modulus weakened for β-PP/T-CSW β-PP/PP-g-MAH/T-CSW versus PP/T-CSW POLYM. COMPOS., 2015. © 2015 Society Plastics Engineers
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