Microstructure and Morphology of PolypropyIene/Clay NanocompositesSynthesized via Intercalative Polymerization

Abstract

Abstract: Polypropylene/montmorillonite(PP-MMT) nanocomposites were synthesized via intercalativepolymerization.The morphology evolution and microstructure of the nanocomposites were investigated bymeans of polarized optical microscopy(POM), scanning electron microscopy(SEM), transmssion electronmicroscopy(TEM) and wide angle Xray diffraction (WAXD).It has been found that the big primary MMT particles were mostly dissociated into smaller secondary particles, which consists of 2～20 individual MMT layers and expanded gallery distance full of PPchains.The morphology evolution model of the PP-MMT during the intercalation polymerization is discussed.It has been also found that the presence of MMT influences the spherulite morphology of the polypropylene in the PP-MMT nanocomposites with in-creasing of MMT content in nanocomposite, the dimension of the spherulite reduced and the shape becamedistorted.

Key words: PP nanocomposites, Morphology, Montmorillonite, Intercalation polymerization

CLC Number:

O631

TrendMD:

MA Ji-Sheng, ZHANG Shi-Min, QI Zong-Neng, HU You-Liang, ZHANG Shu-Fan. Microstructure and Morphology of PolypropyIene/Clay NanocompositesSynthesized via Intercalative Polymerization[J]. Chem. J. Chinese Universities, 2002, 23(4): 734.

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Microstructure and Morphology of PolypropyIene/Clay NanocompositesSynthesized via Intercalative Polymerization

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