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Observation of Regime III Crystallization in Polyethylene/Montmorillonite Nanocomposites

✍ Scribed by Jun-Ting Xu; Yan-Qin Zhao; Qi Wang; Zhi-Qiang Fan

Publisher
John Wiley and Sons
Year
2005
Tongue
English
Weight
197 KB
Volume
26
Category
Article
ISSN
1022-1336

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✦ Synopsis

Abstract

Summary: Exfoliated and intercalated polyethylene/montmorillonite (PE/MMT) nanocomposites with high MMT content were prepared by in situ polymerization. The isothermal crystallization kinetics of the nanocomposites were analyzed with Lauritzen–Hoffman regime theory. Regime III crystallization, which is difficult to observe in linear polyethylene, appears in the PE/MMT nanocomposites. The broader temperature range of regime III crystallization in PE/MMT nanocomposites shows that the mobility and reptation ability of the PE chains are greatly reduced by the MMT, especially in the intercalated nanocomposite.

Plots of ln K/n + U*/R(T~c~β€‰βˆ’β€‰T~0~) against 1/T~c~(Ξ”__T__)f for the intercalated and exfoliated PE/MMT nanocomposites.

magnified imagePlots of ln K/n + U*/R(T~c~β€‰βˆ’β€‰T~0~) against 1/T~c~(Ξ”__T__)f for the intercalated and exfoliated PE/MMT nanocomposites.

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