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首页> 外文期刊>Journal of Applied Polymer Science >Formation of polymer nanocomposites with various organoclays
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Formation of polymer nanocomposites with various organoclays

机译：与各种有机粘土形成聚合物纳米复合材料

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The role of the type of organic modifier used with montmorillonite (MMT) on the formation of polymer/ clay nanocomposites in the melt compounding process was investigated. Various organoclays including primary [12-aminolauric acid (12ALA)], secondary [dioctylamine (DOA)], tertiary [trioctylamine (TOA)], and two commercial quaternary (Cloisite 30B and 20A) MMTs were melt compounded with carefully selected polymers including polypropylene, polystyrene, styrene-acrylonitrile copolymer, poly(methyl methacrylate), poly(vinylidene fluoride), and acrylonitrile-butadiene copolymer (NBR). X-ray diffraction and transmission electron microscopy characterizations confirmed that the two quaternary ammonium organoclay (Cloisite 30B and 20A) have superior compatibility compared to the primary (12ALA), secondary (DOA), and tertiary (TOA) ammonium organoclay. DOA and TOA can form polymer/clay nanocomposites only with the most polar polymer (NBR). Cloisite Na+ and 12ALA can not form nanocomposite with any polymers. The large organic surface area of the quaternary ammonium organoclay could be the reason of the best compatibility with polar polymers. It is estimated that long alkyl ammonium chains of organic modifier can spread over the clay surface more effectively than short alkyl chains. (c) 2005 Wiley Periodicals, Inc.
机译：研究了与蒙脱石（MMT）一起使用的有机改性剂类型在熔融复合过程中对聚合物/粘土纳米复合材料形成的影响。将包括伯[12-氨基月桂酸（12ALA）]，仲[二辛胺（DOA）]，叔[三辛胺（TOA）]和两种市售季铵盐（Cloisite 30B和20A）MMT在内的各种有机粘土与精心选择的聚合物（包括聚丙烯）熔融混合，聚苯乙烯，苯乙烯-丙烯腈共聚物，聚甲基丙烯酸甲酯，聚偏二氟乙烯和丙烯腈-丁二烯共聚物（NBR）。 X射线衍射和透射电子显微镜表征证实，两种季铵有机粘土（Cloisite 30B和20A）与伯（12ALA），仲（DOA）和叔（TOA）有机铵相比具有优异的相容性。 DOA和TOA只能与极性最大的聚合物（NBR）形成聚合物/粘土纳米复合材料。 Cloisite Na +和12ALA不能与任何聚合物形成纳米复合材料。季铵有机粘土的大有机表面积可能是与极性聚合物最佳相容性的原因。据估计，有机改性剂的长烷基铵链比短烷基链更有效地分布在粘土表面。 （c）2005年Wiley Periodicals，Inc.

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