硅酸盐学报2012，Vol.40Issue(12)：1760-1766,7.
凹凸棒石／聚乳酸纳米复合材料的力学性能和流变性能
Mechanical and Rheological Properties of Attapulgite/Poly(Lactic Acid) Nano-composites
摘要
Abstract
The nano-composite materials of attapulgite and poly(lactic acid)(ATT/PLA) were prepared at various ATT content (mass fraction) of 1%, 3% and 5% by a melting blend method. The rheology and mechanical properties of the nano-composite materials were investigated. The results show that the ATT has a good compatibility with PLA when the ATT content is 〈 5%. However, the ATT particles become the aggreates when the content is 〉 5%. The results also show that there exists an interaction between the ATT particles and the PLA matrix. The nano-composite of ATT/PLA could transform from brittle to tough materials when the ATT was added into the PLA matrix. Besides, the mechanical properties of the nano-composites could be improved with adding the ATT. The elongation at the break of the nano-composite with ATT of 3% is 26.36%, which is 297.6% greater than that of the PLA without any ATT. Also, the izod impact strength is 19.7% which is greater than that of the PLA without any ATT. This nano-composite material of ATT/PLA exhibits a better performance in complex viscosity, storage modulus and loss modulus, compared to the PLA without any ATT. It should be attributed to the interaction between the ATT and the PLA due to the restriction effects of ATT particles on the mobility of polymer chains on the organic-inorganic interface of the composites. The effects could be more significant in a low frequency region than in a high frequency region.关键词
聚乳酸/凹凸棒石/纳米复合材料/力学性能/流变性能Key words
poly(lactic acid)/attapulgite/nano-composites/mechanical property/rheology分类
通用工业技术引用本文复制引用
刘莉,王永仁,左玉萍,蒋玉梅,韩舜愈..凹凸棒石／聚乳酸纳米复合材料的力学性能和流变性能[J].硅酸盐学报,2012,40(12):1760-1766,7.基金项目
兰州市科技计划项目（2010-1-235）资助. （）
