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首页> 外文期刊>Journal of Applied Polymer Science >Development of blown film linear low-density polyethylene-clay nanocomposites: Part A: Manufacturing process and morphology
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Development of blown film linear low-density polyethylene-clay nanocomposites: Part A: Manufacturing process and morphology

机译：吹塑薄膜线性低密度聚乙烯 - 纳米复合材料的开发：第一部分：制造过程和形态学

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In this study, linear low-density polyethylene (LLDPE)/clay nanocomposites with different clay contents were prepared by melt intercalation using two different compatibilizers: maleic anhydride grafted styrene-ethylene-butylene-styrene and maleic anhydride grafted polyethylene (PE-g-MA). Melt intercalation was achieved by twin extrusion and nanocomposite films were produced by blown film extrusion. Effects of clay and compatibilizer fractions and type of compatibilizer on the structure, permeability, and the barrier properties of the nanocomposite films were investigated. PE-g-MA was shown to notably improve the dispersion of clay layers in the polyethylene matrix, and this was examined by atomic force microscopy and X-ray diffraction. The latter tests have also highlighted the importance of the screw configuration: the presence of mixing elements favors the dispersion and distribution of nanoclay. Moreover, differential scanning calorimetry results have shown no significant effect of the clay on the crystallinity of the composite while thermogravimetric analysis tests have demonstrated a decrease of onset and peak of decomposition temperatures. Finally, barrier properties toward water vapor transmission were measured. It was proven that not also clay, but the compatibilizer participated in decreasing the permeability of the film. (c) 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 137, 48589.
机译：在该研究中，通过使用两种不同的增容剂熔融插入来制备具有不同粘土内容物的线性低密度聚乙烯（LLDPE）/粘土纳米复合材料：马来酸酐接枝苯乙烯 - 乙烯 - 丁烯 - 苯乙烯和马来酸酐接枝聚乙烯（PE-G-MA ）。通过双挤出和纳米复合膜通过吹膜挤出产生熔体嵌入。研究了粘土和复合液的作用，并研究了纳米复合膜的结构，渗透性和屏蔽性能的结构，渗透性和屏障性质。显示PE-G-MA显着改善聚乙烯基质中粘土层的分散，并通过原子力显微镜和X射线衍射检查。后一种测试还突出了螺杆配置的重要性：混合元件的存在涉及纳米粘土的分散和分布。此外，差分扫描量热法结果显示了粘土对复合材料的结晶度的显着影响，而热重分析试验已经证明了分解温度的起始和峰值的降低。最后，测量了水蒸汽透射的阻隔性能。据证明，不粘土，但增容剂参与降低薄膜的渗透性。 （c）2019 Wiley期刊，Inc.J.Phill。聚合物。 SCI。 2019,137,48589。

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