Beijing Key Laboratory of Printing and Packaging Materials and TechnologyBeijing Institute of Graphic CommunicationBeijing102600 Peoples Republic of China

Peoples Republic of, China

Beijing Key Laboratory of Printing and Packaging Materials and TechnologyBeijing Institute of Graphic CommunicationBeijing102600 Peoples Republic of China

Peoples Republic of, China

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Xu W.C.,Beijing Key Laboratory of Printing and Packaging Materials and TechnologyBeijing Institute of Graphic CommunicationBeijing102600 Peoples Republic of China | Li D.L.,Beijing Key Laboratory of Printing and Packaging Materials and TechnologyBeijing Institute of Graphic CommunicationBeijing102600 Peoples Republic of China | Fu Y.B.,Beijing Key Laboratory of Printing and Packaging Materials and TechnologyBeijing Institute of Graphic CommunicationBeijing102600 Peoples Republic of China | Liao R.J.,Beijing Key Laboratory of Printing and Packaging Materials and TechnologyBeijing Institute of Graphic CommunicationBeijing102600 Peoples Republic of China | And 3 more authors.
Journal of Applied Polymer Science | Year: 2015

In this article, we present a process for preparing organovermiculites, which consist of expanded vermiculite (EVMT)-poly(vinyl alcohol) (PVOH) created by the mechanical ball-milling of EVMT in a PVOH-water solution. We then discusses the influence of EVMT-PVOH on the barrier performance, crystallization behavior, thermal stability, and mechanical properties of modified blown polypropylene (PP) films. EVMT was intercalated and exfoliated by PVOH macromolecules to obtain a kind of hybrid EVMT-PVOH. PVOH served as both an intercalating agent into EVMT and a compatibilizer between EVMT and PP. Compared with the original (unmodified) PP, when the EVMT loading ranged from 0.1 to 2.0%, although the crystallinity decreased for most PP films, the thermal stability and mechanical properties all improved. Moreover, EVMT platelike particles with a high aspect ratio (ca. 550) dispersed in the PP matrix also improved the barrier properties of the modified PP films, which was in accordance with the Nielsen model. © 2015 Wiley Periodicals, Inc.

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