Abstract

Attapulgite (ATT) is a naturally rigid reinforcing filler. In this present study, ATT was first purified, and varying amounts of purified ATT was added to polylactic acid (PLA) to modify PLA through a melt-blending technique. The objective was to determine how the content of ATT affected the characteristics of the ensuing PLA/ATT nanocomposites: morphology, mechanical and thermal properties. Filling PLA with ATT increased both the thermal and mechanical properties, but too much ATT was not beneficial as the effect was to decrease both properties. Energy dispersive spectroscopy indicated that the percentage of Si element increased with the amount of ATT, but more than 10 wt % ATT led to a poor ATT distribution in the nanocomposites.

中文翻译：

---

表征凹凸棒石增强的聚乳酸纳米复合材料

摘要

凹凸棒（ATT）是一种天然的刚性增强填料。在本研究中，首先对ATT进行纯化，然后将不同数量的ATT加入到聚乳酸（PLA）中，以通过熔融共混技术改性PLA。目的是确定ATT的含量如何影响随后的PLA / ATT纳米复合材料的特性：形态，机械和热性能。用ATT填充PLA会同时提高热性能和机械性能，但是过多的ATT不利于降低两种性能。能量色散光谱法表明，随着ATT量的增加，硅元素的含量增加，但ATT的含量超过10 wt％导致ATT在纳米复合材料中的分布较差。