Isothermal Crystallization Behavior of Poly (L-lactic acid)/Surface-grafted Silica Nanocomposites

被引：1
|
作者：
Cai, Yan-Hua [1 ]
机构：
[1] Chongqing Univ Arts & Sci, Sch Mat & Chemiacal Engn, Chongqing 402160, Yongchuan, Peoples R China
来源：
MATERIALS, MECHANICAL ENGINEERING AND MANUFACTURE, PTS 1-3 | 2013年 / 268-270卷
关键词：
Poly(L-lactic acid); Silica; Isothermal crystallization; Composities; LACTIC-ACID;
D O I：
10.4028/www.scientific.net/AMM.268-270.37
中图分类号：
T [工业技术];
学科分类号：
08 ;
摘要：
The Poly(L-lactic acid)(PLLA)/surface-grafting silica(g-SiO2) nanocomposites were prepared by melt blending. The isothermal crystallization behavior of PLLA/g-SiO2 nanocomposites with different content of g-SiO2 was investigated by optical depolarizer. In isothermal crystallization from melt, the induction periods and half times for overall PLLA crystallization (95 degrees C <= T-c <= 120 degrees C) were affected by the crystallization temperature and the content of g-SiO2 in nanocomposites. The results showed that g-SiO2 as a kind of heterogeneous nucleating agent can reduce induction periods and half times for overall PLLA crystallization. The thermal properties of PLLA/g-SiO(2)samples were also investigated by differential scanning calorimetry (DSC), The results showed that the crystalline degree of PLLA was improved as the presence of g-SiO2.
引用
收藏
页码：37 / 40
页数：4
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