Surface-grafted silica linked with L-lactic acid oligomer: A novel nanofiller to improve the performance of biodegradable poly(L-lactide)

doi:10.1016/j.polymer.2007.01.037

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	Surface-grafted silica linked with L-lactic acid oligomer: A novel nanofiller to improve the performance of biodegradable poly(L-lactide)
	Yan, Shifeng ; Yin, Jingbo ; Yang, Yan ; Dai, Zhengzhan ; Ma, Jia ; Chen, Xuesi
刊名	POLYMER
	2007-03-08
卷号	48 期号:6 页码:1688-1694
关键词	Polylactide Silica Surface Grafting
ISSN号	0032-3861
DOI	10.1016/j.polymer.2007.01.037
英文摘要	A new surface modification method by grafting L-lactic acid oligomer onto the surface silanol groups of silica nanoparticles has been developed. The surface-grafting reaction is confirmed by IR and Si-29 MAS NMR analyses. TEM and SEM results show that grafted SiO2 (g-SiO2) nanoparticles can be comparatively uniformly dispersed in chloroform or PLLA matrix, while the unmodified SiO2 nanoparticles tend to aggregate. The loading of g-SiO2 nanoparticles in poly(L-lactide) (PLLA) matrix greatly improves the toughness and tensile strength of this material. In contrast, the incorporation of un-grafted SiO2 nanoparticles into PLLA leads to the deterioration of its mechanical properties. DSC analysis shows that g-SiO2 nanoparticles can serve as a nucleating agent for the crystallization of PLLA in the composites. SEM characterization shows the tough characteristics and great interfacial combination strength for g-SiO2 (5wt%)/PLLA nanocomposites. (c) 2007 Elsevier Ltd. All rights reserved.
语种	英语
出版者	ELSEVIER SCI LTD
WOS记录号	WOS:000245257300032
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/61357]
专题	中国科学院化学研究所
通讯作者	Yin, Jingbo
作者单位	1.Shanghai Univ, Sch Mat Sci & Engn, Dept Polymer Mat, Shanghai 201800, Peoples R China 2.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China
推荐引用方式 GB/T 7714	Yan, Shifeng,Yin, Jingbo,Yang, Yan,et al. Surface-grafted silica linked with L-lactic acid oligomer: A novel nanofiller to improve the performance of biodegradable poly(L-lactide)[J]. POLYMER,2007,48(6):1688-1694.
APA	Yan, Shifeng,Yin, Jingbo,Yang, Yan,Dai, Zhengzhan,Ma, Jia,&Chen, Xuesi.(2007).Surface-grafted silica linked with L-lactic acid oligomer: A novel nanofiller to improve the performance of biodegradable poly(L-lactide).POLYMER,48(6),1688-1694.
MLA	Yan, Shifeng,et al."Surface-grafted silica linked with L-lactic acid oligomer: A novel nanofiller to improve the performance of biodegradable poly(L-lactide)".POLYMER 48.6(2007):1688-1694.