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首页> 外文期刊>Journal of Applied Polymer Science >Improved Thermostability and Interfacial Matching of Nanoclay Filler and Ethylene Vinyl Alcohol Matrix by Silane-Modification
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Improved Thermostability and Interfacial Matching of Nanoclay Filler and Ethylene Vinyl Alcohol Matrix by Silane-Modification

机译：硅烷改性改进纳米粘土填料与乙烯-乙烯醇基的热稳定性和界面匹配

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摘要

The interfacial compatibility between polymers and nanoclay fillers as well as the thermostability of both components are important characteristics for processing them into polymer composites. While the polymer component is often grafted using common polymerization reactions, the nanoclay component is usually surface modified by surfactant treatment to improve compatibility. In the present study, the polymer ethylene vinyl alcohol and a nanoclay filler based on natural bentonite are both surface modified by different silanes, 3-glycidoxypropyltrimethoxysilane and methacryloxymethyltrimethoxysilane and their interfacial properties are investigated by inverse gas chromatography. The silane-modified samples had improved interfacial properties as reflected by a significant increase in dispersive and specific surface energies. Lewis acidities were determined using chloroform and 1,4-dioxane as polar probes and showed a good match between polymer and nanofiller interfaces. Lewis acidity was generally lower after silane-modification. Silanization yielded increased thermal stability of the treated samples. Thus, silanization led to improved compatibility and enhanced thermal stability which facilitates further processing. (C) 2014 Wiley Periodicals, Inc.
机译：聚合物与纳米粘土填料之间的界面相容性以及两种组分的热稳定性是将它们加工成聚合物复合材料的重要特征。尽管通常使用常见的聚合反应接枝聚合物组分，但通常通过表面活性剂处理对纳米粘土组分进行表面改性，以提高相容性。在本研究中，聚合物乙烯乙烯醇和基于天然膨润土的纳米粘土填料均通过不同的硅烷，3-环氧丙氧基丙基三甲氧基硅烷和甲基丙烯酰氧基甲基三甲氧基硅烷进行了表面改性，并通过反相气相色谱法研究了它们的界面性质。硅烷改性的样品具有改善的界面性能，这由分散能和比表面能的显着提高所反映。使用氯仿和1,4-二恶烷作为极性探针测定路易斯酸度，并显示出聚合物和纳米填料界面之间的良好匹配。硅烷改性后，路易斯酸度通常较低。硅烷化处理后的样品具有更高的热稳定性。因此，硅烷化导致改善的相容性和增强的热稳定性，这有利于进一步加工。 （C）2014威利期刊公司

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