• 主题
高级搜索  >
历史搜索 清空历史
首页> 外文期刊>Journal of Applied Polymer Science >Effect of mixing conditions on mechanical properties of polylactide/montmorillonite clay nanocomposites
【24h】

Effect of mixing conditions on mechanical properties of polylactide/montmorillonite clay nanocomposites

机译：混合条件对聚乳酸/蒙脱土纳米复合材料力学性能的影响

获取原文
获取原文并翻译 | 示例
           
页面导航
  • 摘要
  • 著录项
  • 相似文献
  • 相关主题

摘要

Biopolymer nanocomposites are of great interest to the packaging industry as they can overcome the inferior properties of biopolymers compared with synthetic polymers. However, studies on property improvement have been inconclusive about optimum filler levels and mixing conditions. This article reports on a systematic study of effect on mechanical properties of varying melt mixing conditions and filler level in PLA organoclay composites. Samples were mixed in a batch mixer at various temperatures, times, and speeds, at three filler levels. Tensile properties were measured and morphology characterized using small angle X-ray scattering (SAXS). An empirical model was used to predict the optimum mixing conditions. Samples produced at those conditions had the highest modulus of all samples, 66% higher than the average. Samples with different filler levels were made at the optimum conditions and tested for modulus and morphology. The maximum modulus, 40% higher than natural PLA, was achieved at 4 wt % filler level, and above that level modulus decreased, similar to findings in some studies but contrary to others. SAXS measurements indicated the samples had a similar intercalated morphology, so the excellent modulus results may be attributed to presence of smaller tactoids and absence of agglomerates rather than exfoliation.
机译：生物聚合物纳米复合材料对包装行业非常感兴趣，因为与合成聚合物相比，它们可以克服生物聚合物的劣等特性。但是，关于性能改进的研究尚未就最佳填料水平和混合条件进行总结。本文报道了对PLA有机粘土复合材料中各种熔体混合条件和填料含量对机械性能影响的系统研究。将样品在批量混合器中以三种填充水平在各种温度，时间和速度下进行混合。使用小角度X射线散射（SAXS）测量拉伸性能并表征形态。使用经验模型来预测最佳混合条件。在这些条件下生产的样品具有所有样品中最高的模量，比平均值高66％。在最佳条件下制备具有不同填料含量的样品，并测试其模量和形态。当填料含量为4 wt％时，最大模量比天然PLA高40％，并且在该含量之上，模量下降，与某些研究相似，但与其他研究相反。 SAXS测量表明样品具有相似的插层形态，因此优异的模量结果可能归因于较小触针的存在和不存在团聚而不是剥落。

著录项

相似文献

  • 外文文献
  • 中文文献
  • 专利
获取原文

客服邮箱：kefu@zhangqiaokeyan.com

京公网安备：11010802029741号 ICP备案号：京ICP备15016152号-6 六维联合信息科技 (北京) 有限公司©版权所有

  • 客服微信

  • 服务号