Effect of multi-walled carbon nanotubes on the crystallization and hydrolytic degradation of biodegradable Poly(L-lactide)
Effect of multi-walled carbon nanotubes on the crystallization and hydrolytic degradation of biodegradable Poly(L-lactide)
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DOI：
10.1016/j.compscitech.2008.12.008
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发表时间：
2009-04-01
影响因子：
9.1
通讯作者：
Yang, Wantai
中科院分区：
文献类型：
--
作者：
Zhao, Yuanyuan;Qiu, Zhaobin;Yang, Wantai
采用溶液共混法制备了可生物降解的聚乳酸/羧基功能化多壁碳纳米管复合材料。扫描电子显微镜观察表明，f-MWNTs在PLLA基质中有很好的分散性。与纯净的PLLA相比，f-MWNTs的存在促进了PLLA在纳米复合材料中的结晶；而且，随着f-MWNTs在PLLA基质中含量的增加，PLLA的总结晶速率也随之增加。F-MWNTs的加入提高了PLLA/f-MWNTs纳米复合材料的储能系数，这种影响在f-MWNTs含量较低时更为明显。本研究的激动人心之处在于制备了f-MWNTs纳米复合材料后PLLA的水解性增强，具有广阔的实际应用前景。(C)2008爱思唯尔有限公司。保留所有权利。
Biodegradable Poly(L-lactide) (PLLA)/carboxyl-functionalized multi-walled carbon nanotubes (f-MWNTS) nanocomposites were prepared via solution blending. Scanning electron microscopy observations reveal a fine dispersion of f-MWNTs in the PLLA matrix. The presence of f-MWNTs enhances the crystallization of PLLA in the nanocomposites compared with that of neat PLLA; moreover, the overall crystallization rate of PLLA increases with increasing the f-MWNTs content in the PLLA matrix. The incorporation of f-MWNTs improves the storage modulus of the PLLA/f-MWNTs nanocomposites, with this effect being more pronounced at lower f-MWNTs content. The exciting aspect of this research is the enhanced hydrolytic degradation of PLLA after nanocomposites preparation with f-MWNTs, which may be of great interest for its wide practical application. (C) 2008 Elsevier Ltd. All rights reserved.