Intercalated linear low density polyethylene (LLDPE)/clay nanocomposites prepared with oxidized polyethylene as a new type compatibilizer:: Structural, mechanical and barrier properties
Intercalated linear low density polyethylene (LLDPE)/clay nanocomposites prepared with oxidized polyethylene as a new type compatibilizer:: Structural, mechanical and barrier properties
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DOI：
10.1016/j.eurpolymj.2007.06.019
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发表时间：
2007-09-01
影响因子：
6
通讯作者：
Tsapatsis, Michael
中科院分区：
文献类型：
--
作者：
Durmus, Ali;Woo, Maybelle;Tsapatsis, Michael
研究了不同分子量和酸值的低分子量氧化聚乙烯（OxPE）作为新型相容剂在低密度聚乙烯（LLDPE）/有机粘土纳米复合材料制备中的应用。通过熔融加工制备具有5 phr（份/百份）有机粘土的纳米复合材料。研究了相容剂极性和粘土分散对纳米复合材料的热性能、力学性能和阻隔性能的影响。据观察，氧化聚乙烯产生了很强的粘土层和聚合物相之间的界面相互作用的基础上，通过小振幅振荡流变仪的样品的线性粘弹性行为的分析。结果表明，纳米复合材料的物理性能不仅受粘土分散性的影响，而且还受氧化聚乙烯相容剂的熔体粘度和极性的影响。结果发现，与氧化聚乙烯制备的纳米复合材料样品的氧渗透率值低于与常规的相容剂，马来酸酐接枝聚乙烯（PE-g-MA）制备的样品。(C)2007爱思唯尔有限公司版权所有。
In this study, the use of low molecular weight oxidized polyethylenes (OxPE) with different molecular weight and acid number as a new type of compatibilizer in low density polyethylene (LLDPE)/org-clay nanocomposite preparation was examined. Nanocomposites having 5 phr (part per hundred) org-clay were prepared by melt processing. The effect of compatibilizer polarity and clay dispersion on the thermal, mechanical and barrier properties of the nanocomposites was investigated. It was observed that oxidized polyethylenes created a strong interfacial interaction between the clay layers and polymer phase based on the analysis of the linear viscoelastic behavior of the samples by small amplitude oscillatory rheometry. We showed that physical performance of the nanocomposites is not only affected by clay dispersion but also both Melt viscosity and polarity of the oxidized polyethylene compatibilizers. It was found that oxygen permeability values of the nanocomposite samples prepared with the oxidized polyethylenes were lower than that of a sample prepared with conventional compatibilizer, maleic anhydride grafted polyethylene (PE-g-MA). (C) 2007 Elsevier Ltd. All rights reserved.