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首页> 外文期刊>Journal of Applied Polymer Science >Polypropylene nanocomposites produced by in situ grafting of n-butyl acrylate
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Polypropylene nanocomposites produced by in situ grafting of n-butyl acrylate

机译：原位接枝丙烯酸正丁酯制备的聚丙烯纳米复合材料

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Nanocomposites of polypropylene and organophilic clay are produced by in situ functionalization of PP with n-butyl acrylate (BA) during melt mixing. Three strategies for incorporating materials into the mixer are analyzed and the effect of clay concentration is evaluated. The materials are examined by FTIR spectroscopy, X-ray diffraction, scanning electron microscopy, differential scanning calorimetry, thermogravimetry, and rotational rheometry. The results show that all composites prepared in the presence of BA have similar intercalated clay structure, and that the largest degree of exfoliation is obtained using the sequential mixing technique. This method, which consists in adding the initiator and functionalizing agent to the molten polypropylene followed by the addition of the clay, also produces the largest reduction in molecular weight of the polymer and the largest increase of the elastic modulus. All polymers show similar crystallization and degradation processes. (c) 2015 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2015, 132, 42585.
机译：聚丙烯和亲有机性粘土的纳米复合材料是通过在熔融混合过程中将聚丙烯与丙烯酸正丁酯（BA）进行原位官能化而制得的。分析了将物料掺入搅拌机的三种策略，并评估了粘土浓度的影响。通过FTIR光谱，X射线衍射，扫描电子显微镜，差示扫描量热法，热重法和旋转流变法检查材料。结果表明，在BA存在下制备的所有复合材料均具有相似的插层粘土结构，并且使用顺序混合技术可获得最大的剥离度。该方法包括将引发剂和官能化剂添加到熔融聚丙烯中，然后添加粘土，该方法还产生最大的聚合物分子量降低和最大的弹性模量增加。所有聚合物均显示出相似的结晶和降解过程。 （c）2015 Wiley Periodicals，Inc. J. Appl。 Polym。科学2015，132，42585。

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