Thermomechanical and Optical Properties of Biodegradable Poly(L-lactide)/Silica Nanocomposites by Melt Compounding

doi:10.1002/app.30896

CORC > 化学研究所 > 中国科学院化学研究所

	Thermomechanical and Optical Properties of Biodegradable Poly(L-lactide)/Silica Nanocomposites by Melt Compounding
	Wen, Xin 1,2; Lin, Ying 1,2; Han, Changyu 1; Zhang, Kunyu 1,2; Ran, Xianghai 1,2; Li, Yuesheng 1; Dong, Lisong 1
刊名	JOURNAL OF APPLIED POLYMER SCIENCE
	2009-12-15
卷号	114 期号:6 页码:3379-3388
关键词	Nanocomposites Polyesters Silicas Transparency
ISSN号	0021-8995
DOI	10.1002/app.30896
英文摘要	Poly(L-lactide) (PLA)/silica (SiO(2)) nanocomposites containing 1, 3, 5, 7, and 10 Wt % SiO(2) nanoparticles were prepared by melt compounding in a Haake mixer. The phase morphology, thermomechanical properties, and optical transparency were investigated and compared to those of neat PLA. Scanning electron microscopy results show that the SiO(2) nanoparticles were uniformly distributed in the PLA matrix for filler contents below 5 wt %, whereas some aggregates were detected with further increasing filler concentration. Differential scanning calorimetry analysis revealed that the addition Of SiO(2) nanoparticles not only remarkably accelerated the crystallization speed but also largely improved the crystallinity of PLA. An initial increase followed by a decrease with higher filler loadings for the storage modulus and glass-transition temperature were observed according to dynamic mechanical analysis results. Hydrogen bonding interaction involving C=O of PLA with Si-OH Of SiO(2) was evidenced by Fourier transform infrared analysis for the first time. From the mechanical tests, we found that the tensile strength and modulus values of the nanocomposites were greatly enhanced by the incorporation of inorganic SiO(2) nanoparticles, and the elongation at break and impact strength were slightly improved. The optical transparency of the nanocomposites was excellent, and it seemed independent of the SiO(2) concentration; this was mainly attributed to the closed refractive indices between the PLA matrix and nanofillers. (C) 2009 Wiley Periodicals, Inc. J Appl Polym Sci 114: 3379-3388, 2009
语种	英语
出版者	JOHN WILEY & SONS INC
WOS记录号	WOS:000270746000005
内容类型	期刊论文
源URL	[http://ir.iccas.ac.cn/handle/121111/67195]
专题	中国科学院化学研究所
通讯作者	Dong, Lisong
作者单位	1.Chinese Acad Sci, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 10080, Peoples R China
推荐引用方式 GB/T 7714	Wen, Xin,Lin, Ying,Han, Changyu,et al. Thermomechanical and Optical Properties of Biodegradable Poly(L-lactide)/Silica Nanocomposites by Melt Compounding[J]. JOURNAL OF APPLIED POLYMER SCIENCE,2009,114(6):3379-3388.
APA	Wen, Xin.,Lin, Ying.,Han, Changyu.,Zhang, Kunyu.,Ran, Xianghai.,...&Dong, Lisong.(2009).Thermomechanical and Optical Properties of Biodegradable Poly(L-lactide)/Silica Nanocomposites by Melt Compounding.JOURNAL OF APPLIED POLYMER SCIENCE,114(6),3379-3388.
MLA	Wen, Xin,et al."Thermomechanical and Optical Properties of Biodegradable Poly(L-lactide)/Silica Nanocomposites by Melt Compounding".JOURNAL OF APPLIED POLYMER SCIENCE 114.6(2009):3379-3388.