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首页> 外文期刊>Journal of Applied Polymer Science >Hydrophobically modified poly(vinyl alcohol) and bentonite nanocomposites thereof: Barrier, mechanical, and aesthetic properties
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Hydrophobically modified poly(vinyl alcohol) and bentonite nanocomposites thereof: Barrier, mechanical, and aesthetic properties

机译：疏水改性的聚乙烯醇及其膨润土纳米复合材料：阻隔，机械和美学性能

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摘要

Composite films were formed by incorporating three different bentonites into an ethylene modified, water-soluble poly(vinyl alcohol), EPVOH. The interaction of EPVOH with both hydrophilic and hydrophobic bentonites was investigated. EPVOH provided lower water vapor and oxygen transmission rates compared to a conventional PVOH grade when exposed at high relative humidities (70-90% RH). EPVOH films which exhibited oxygen barrier properties comparable to that of a biaxially oriented PET packaging film at 80% RH were produced. High compatibility between EPVOH and hydrophilic bentonites provided an even distribution of clay platelets in the composites. A strong increase in Young's modulus with increased addition of any of the three bentonites was found. At low addition levels the hydrophobic bentonite proved to be effective in terms of maintaining high elongation at break, high transparency and high gloss. (c) 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 41737.
机译：通过将三种不同的膨润土掺入乙烯改性的水溶性聚乙烯醇EPVOH中来形成复合膜。研究了EPVOH与亲水性和疏水性膨润土的相互作用。当暴露在较高的相对湿度（70-90％RH）下时，与传统的PVOH等级相比，EPVOH的水蒸气和氧气的透过率更低。制备在80％RH下表现出与双轴取向PET包装膜可比的氧阻挡性能的EPVOH膜。 EPVOH和亲水性膨润土之间的高度相容性使粘土薄片在复合材料中分布均匀。发现随着三种膨润土中任一种的添加增加，杨氏模量显着增加。在低添加量下，疏水性膨润土被证明在保持高断裂伸长率，高透明度和高光泽度方面是有效的。 （c）2014 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，41737。

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