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2003•Acta Scientiarum Naturalium Universitatis SunyatseniRequires access

SYNTHESIS AND CHARACTERIZATION OF POLYPROPYLENE／MONTMORILLONITE NANOCOMPOSITES VIA AN in－situ POLYMERIZATION APPROACH

Hai-chaoZhao, Xue-quanZhang, FengYang, BinChen, Ying-taiJin, GangLI, Zhi-liuFeng, Bao-tongHuang

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Abstract

Polypropylene/montmorillonite (PP/MMT) nanocomposites were prepared by in-situ polymerization using a MMT/MgC12/TiCl4-EB Ziegler-Natta catalyst activated by triethylaluminum (TEA). The enlarged layer spacing of MMT was confirmed by X-ray wide angle diffraction (WAXD), demonstrating that MMT were intercalated by the catalyst components.X-ray photoelectron spectrometry (XPS) analysis proved that TIC14 was mainly supported on MgC12 instead of on the surface of MMT The exfoliated structure of MMT layers in the PP matrix of PP/MMT composites was demonstrated by WAXD patterns and transmission electron microscopy (TEM) observation. The higher glass transition temperature and higher storage modulus of the PP/MMT composites in comparison with pure PP were revealed by dynamic mechanical analysis (DMA).

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What this paper is about

Polypropylene/montmorillonite (PP/MMT) nanocomposites were prepared by in-situ polymerization using a MMT/MgC12/TiCl4-EB Ziegler-Natta catalyst activated by triethylaluminum (TEA). The enlarged layer spacing of MMT was confirmed by X-ray wide angle diffraction (WAXD), demonstrating that MMT were intercalated by the catalyst components.X-ray photoelectron spectrometry (XPS) analysis proved that TIC14 was mainly supported on MgC12 instead of on the surface of MMT The exfoliated structure of MMT layers in the PP matrix of PP/MMT composites was demonstrated by WAXD patterns and transmission electron microscopy (TEM) observation. The higher glass transition temperature and higher storage modulus of the PP/MMT composites in comparison with pure PP were revealed by dynamic mechanical analysis (DMA).

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Available abstract

Polypropylene/montmorillonite (PP/MMT) nanocomposites were prepared by in-situ polymerization using a MMT/MgC12/TiCl4-EB Ziegler-Natta catalyst activated by triethylaluminum (TEA). The enlarged layer spacing of MMT was confirmed by X-ray wide angle diffraction (WAXD), demonstrating that MMT were intercalated by the catalyst components.X-ray photoelectron spectrometry (XPS) analysis proved that TIC14 was mainly supported on MgC12 instead of on the surface of MMT The exfoliated structure of MMT layers in the PP matrix of PP/MMT composites was demonstrated by WAXD patterns and transmission electron microscopy (TEM) observation. The higher glass transition temperature and higher storage modulus of the PP/MMT composites in comparison with pure PP were revealed by dynamic mechanical analysis (DMA).

Key concepts: Montmorillonite, Materials science, X-ray photoelectron spectroscopy, Nanocomposite, Polypropylene, Dynamic mechanical analysis, Transmission electron microscopy, Polymerization

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SYNTHESIS AND CHARACTERIZATION OF POLYPROPYLENE／MONTMORILLONITE NANOCOMPOSITES VIA AN in－situ POLYMERIZATION APPROACH — Research Paper | ScholarLens