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首页> 外文期刊>Journal of Applied Polymer Science >Influence of nanovermiculites with a high aspect ratio and stretch orientation on the microstructure of polypropylene films
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Influence of nanovermiculites with a high aspect ratio and stretch orientation on the microstructure of polypropylene films

机译：高长径比和拉伸取向的纳米ver石对聚丙烯薄膜微观结构的影响

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摘要

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. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2016, 132, 42846.
机译：在本文中，我们介绍了一种制备有机蒙脱石的方法，该方法包括通过在PVOH水溶液中进行机械球磨而制造的膨胀ver石（EVMT）-聚（乙烯醇）（PVOH）。然后，我们讨论了EVMT-PVOH对改性吹塑聚丙烯（PP）薄膜的阻隔性能，结晶行为，热稳定性和机械性能的影响。将EVMT插入并剥落PVOH大分子，得到一种EVMT-PVOH杂化体。 PVOH既是EVMT的插层剂，又是EVMT和PP之间的增容剂。与原始（未改性的）PP相比，当EVMT的负载量为0.1％至2.0％时，尽管大多数PP薄膜的结晶度降低，但热稳定性和机械性能均得到改善。此外，具有高长宽比（约550）的EVMT板状颗粒分散在PP基体中，也改善了改性PP膜的阻隔性能，这与Nielsen模型一致。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2016，132，42846。

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