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首页> 外文期刊>Journal of Applied Polymer Science >Effect of multistage sonication on dispersive mixing of polymer nanocomposites characterized via shear-induced crystallization behavior
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Effect of multistage sonication on dispersive mixing of polymer nanocomposites characterized via shear-induced crystallization behavior

机译：多级超声处理对聚合物纳米复合材料分散混合的影响，其特征在于剪切诱导的结晶行为

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While nanoparticle dispersion is necessary to achieve optimal properties, it has long been recognized as a major technological hurdle for polymer nanocomposites. Here, a systematic study incorporated carbon nanotubes (CNTs) in polycaprolactone (PCL) using a multi-stage sonication process, with Stage 1 sonication of CNT/solvent followed by Stage 2 sonication of the preprocessed CNT/solvent with the dissolved polymer. Conventional dispersion characterization techniques were complemented with analysis of the shear-induced crystallization (SIC) behavior of the semicrystalline nanocomposite, which was found to be particularly sensitive to the state of nanoparticle dispersion. While Stage 1 sonication was found to have a pronounced effect on the nanoparticle dispersion as characterized via SIC and thermal characterization, the impact of Stage 2 sonication on the level of nanoparticle dispersion was much smaller. Such results demonstrate the utility of characterization of the shear-induced crystallization behavior as a means to analyze nanoparticle dispersion in semicrystalline polymer nanocomposites. (C) 2016 Wiley Periodicals, Inc.
机译：虽然纳米颗粒分散体是必要的，以达到最佳性能，它一直被认为是聚合物纳米复合材料的主要技术障碍。在此，使用一个多级超声处理过程中，随着CNT /溶剂的阶段1超声系统的研究并入碳纳米管（CNT）的聚己酸内酯（PCL），接着第二阶段超声处理的预处理的CNT /溶剂与溶解的聚合物。常规分散表征技术用的半结晶纳米复合材料，其被发现是对纳米颗粒分散体的状态特别敏感的剪切诱导结晶（SIC）行为的分析补充。而第1点阶段超声处理被发现具有在纳米颗粒分散体作为通过SIC和热特性，第2阶段的超声处理对纳米颗粒分散体的水平的影响，其特征在于有明显的影响要小得多。这种结果表明剪切诱导结晶行为表征的效用作为一种手段来分析在半结晶聚合物纳米复合材料的纳米颗粒分散体。 （c）2016 Wiley期刊，Inc。

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