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Development of blown film linear low‐density polyethylene‐clay nanocomposites: Part B: Mechanical and rheological characterization
Journal of Applied Polymer Science ( IF 3 ) Pub Date : 2019-10-22 , DOI: 10.1002/app.48590
Melissa Said 1 , Georges Challita 1 , Sylvain Seif 2
Affiliation  

In a previous article nanocomposite films made from linear low‐density polyethylene (LLDPE) as matrix and org‐MMT clay as reinforcement were produced. Morphology, thermal stability, and barrier properties were already investigated. The actual work constitutes a complement of the aforementioned article where many mechanical aspects will be assessed: Unlike maleic anhydride grafted styrene‐ethylene‐butylene‐styrene (SEBS‐g‐MA) as compatibilizer, using maleic anhydride grafted polyethylene (PE‐g‐MA) has shown remarkable improvement of most of the properties and this for an optimum clay content ranging between 2 and 4%: the tensile strength has increased by 45%, the stiffness in transverse direction (TD) by 48%, the dart impact has improved by 20%, the tear resistance in machine direction (MD) has increased by 33% and the creep resistance by 20%. Other properties were found to improve with the clay content. In addition, the evolution of the storage and loss moduli as well as the complex viscosity with the frequency were recorded; the drop by 76% of the crossover frequency for 6% weight of clay has shown that the solid‐like behavior of the composite is pronounced with the increment of clay content. Melt flow index was found to vary inversely with clay amount; this indicates an increase in and hence a good dispersion of the clay within the polyethylene matrix. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2020, 137, 48590.

中文翻译:

吹膜线性低密度聚乙烯粘土纳米复合材料的开发:B部分:机械和流变学表征

在上一篇文章中,生产了由线性低密度聚乙烯(LLDPE)作为基体和org-MMT粘土作为增强材料制成的纳米复合膜。已经研究了形态,热稳定性和阻隔性能。实际工作是对上述文章的补充,该文章将评估许多机械方面:与顺丁烯二酸酐接枝的苯乙烯-乙烯-丁烯-苯乙烯(SEBS-g-MA)作为增容剂不同,使用顺丁烯二酸酐接枝的聚乙烯(PE-g-MA) )已显示出大多数性能的显着改善,这对于2%至4%的最佳粘土含量而言:抗拉强度提高了45%,横向刚度(TD)则提高了48%,飞镖冲击力得到了改善机器方向(MD)的抗撕裂强度提高了20%,而抗蠕变性提高了20%,达到了33%。发现其他性质随粘土含量而改善。另外,记录了储能模量和损耗模量的变化以及复数粘度随频率的变化。对于6%重量的粘土,其交换频率下降了76%,这表明复合材料的类固相行为随粘土含量的增加而显着。发现熔体流动指数与粘土量成反比。这表明粘土在聚乙烯基体中的增加并因此具有良好的分散性。分级为4 +©2019 Wiley Periodicals,Inc.J.Appl。Polym。科学 对于6%重量的粘土,其交换频率下降了76%,这表明复合材料的类固相行为随粘土含量的增加而显着。发现熔体流动指数与粘土量成反比。这表明粘土在聚乙烯基体中的增加并因此具有良好的分散性。分级为4 +©2019 Wiley Periodicals,Inc.J.Appl。Polym。科学 对于6%重量的粘土,其交换频率下降了76%,这表明复合材料的类固相行为随粘土含量的增加而显着。发现熔体流动指数与粘土量成反比。这表明粘土在聚乙烯基体中的增加并因此具有良好的分散性。分级为4 +©2019 Wiley Periodicals,Inc.J.Appl。Polym。科学2020137,48590。
更新日期:2020-01-21
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