Synthesis and Characterization of Star-shaped polylactic acid with polyhedral oligomeric silsesquioxanes

被引：4
|
作者：
Zhang, Xiaohui [1 ,2 ]
Gu, Wenjuan [2 ,3 ]
Li, Houbin [2 ]
Tang, Yixiang [1 ]
Wu, Longqi [1 ]
机构：
[1] Hangzhou Dianzi Univ, Green Mat Lab, Hangzhou 310018, Zhejiang, Peoples R China
[2] Wuhan Univ, Wuhan 430079, Peoples R China
[3] Kunming Univ Sci & Technol, Kunming 650500, Peoples R China
来源：
PACKAGING SCIENCE AND TECHNOLOGY | 2012年 / 200卷
关键词：
Octa(gamma-chloroammoniumpropyl) Octasilsesquioxane; POSS-g-PLLA; PLLA; Star-shaped polymer; HYDROLYTIC DEGRADATION; MECHANICAL-PROPERTIES; CRYSTALLIZATION;
D O I：
10.4028/www.scientific.net/AMM.200.397
中图分类号：
TH [机械、仪表工业];
学科分类号：
0802 ;
摘要：
A series of star-shaped polylactic acid was synthesized using L-lactic acid (L-LA) and octa(gamma-chloroammoniumpropyl) octasilsesquioxane (POSS-NH3Cl) by in the presence of stannous(II) octanoate (Sn(Otc)(2)) catalyst. The structures and properties of these dendritic polymers were characterized by FTIR, H-1-NMR and TGA, respectively. These results demonstrated that the chemical reaction between POSS-NH3Cl and L-LA had been taken place, and the novel star-shaped polylactic acid (POSS-g-PLLA) had been synthesized. And thermal properties, such as melting temperature and decomposition temperature, were obviously improved along with the increment of the added amount of POSS-NH3Cl. The decomposition temperature of POSS-g-PLLA was higher ca. 70 degrees C higher than that of PLLA, also higher 65 degrees C than that of POSS-NH3Cl/PLLA.
引用
收藏
页码：397 / +
页数：2
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