Isothermal Crystallization Behavior of PE-HD/Nano-SiO2 Hybrid Materials

doi:10.19491/j.issn.1001-9278.2009.06.008

Abstract

Abstract: Vinyl trimethoxysilane (VTMS) was grafted onto polyethylene (PE-HD) via melt grafting reaction. The grafted PE-HD was allowed to react with forming PE-HD/nano-SiO2 hybrid materials via sol-gel process. The influence of nano-SiO2 on the crystallization behavior of PE-HD was studied with differential scanning calorimetry. It showed that for both PE-HD and PE-HD/nano-SiO2 hybrid materials, the crystallization rate decreased with increasing crystallization temperature. Nano-SiO2 acted as sites for heterogeneous nucleation. The result of isothermal crystallization kinetics showed that the half-crystallization time of both PE-HD and PE-HD/nano-SiO2 hybrid materials increased with increasing crystallization temperature.

Key words: kinetics, high density polyethylene, nano-silicon dioxide, hybrid, isothermal crystallization

CLC Number:

TB325 1+2

SHI Hai-hua . Isothermal Crystallization Behavior of PE-HD/Nano-SiO₂ Hybrid Materials[J]. China Plastics, 2009, 23(06): 35-39 .

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Isothermal Crystallization Behavior of PE-HD/Nano-SiO₂ Hybrid Materials

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