聚乳酸/蒙脱土纳米复合材料的结构和热性能  

Structures and Thermal Properties of Poly(lactic acid)/Montmorillonite Nanocomposites

作　　者：康宏亮[1] 陈成[1] 庄宇刚[1] 董丽松[1] 

机构地区：[1]中国科学院长春应用化学研究所高分子物理和化学国家重点实验室,长春130022

出　　处：《应用化学》2005年第3期346-348,共3页Chinese Journal of Applied Chemistry

摘　　要：Poly（lactic acid）/montmorillonite nanocomposites were prepared by the melt inter calation method. Their structures and thermal properties were investigated by WA XD, DSC and TGA techniques. The WAXD results show that the interlayer spacin g of montmorillonite in the nanocomposites was increased after melt intercalat ion, indicating that the molecular chains of poly（lactic acid） had been interc alated into the montmo-rillonite layers. The thermal stability of poly（lact ic acid） was obviously improved after intercalation with montmorillonite. Compar ed with that of pure poly（lactic acid）, the thermal decomposition temperatures o f the nanocomposites were increased by about 22.5 ℃ in air and 14 ℃ in N2 , respectively.Poly(lactic acid)/montmorillonite nanocomposites were prepared by the melt inter calation method. Their structures and thermal properties were investigated by WA XD, DSC and TGA techniques. The WAXD results show that the interlayer spacin g of montmorillonite in the nanocomposites was increased after melt intercalat ion, indicating that the molecular chains of poly(lactic acid) had been interc alated into the montmo-rillonite layers. The thermal stability of poly(lact ic acid) was obviously improved after intercalation with montmorillonite. Compar ed with that of pure poly(lactic acid), the thermal decomposition temperatures o f the nanocomposites were increased by about 22.5 ℃ in air and 14 ℃ in N_2 , respectively.

关 键 词：聚乳酸 蒙脱土 纳米复合材料 插层 

分 类 号：O63[理学—高分子化学]