Study of the thermal stabilization mechanism of biodegradable poly(L-lactide)/silica nanocomposites
文献类型：期刊论文
| 作者 | Wen, Xin1; Zhang, Kunyu1; Wang, Yan2; Han, Lijing1; Han, Changyu1; Zhang, Huiliang1; Chen, Shan2; Dong, Lisong1 |
| 刊名 | POLYMER INTERNATIONAL
 |
| 出版日期 | 2011-02-01 |
| 卷号 | 60期号:2页码:202-210 |
| 关键词 | Poly(L-lactide) Silica Nanocomposites Thermal Stability Thermal Degradation |
| ISSN号 | 0959-8103 |
| DOI | 10.1002/pi.2927 |
| 英文摘要 | Biodegradable poly(L-lactide) (PLA)/silica (SiO(2)) nanocomposites were prepared by melt compounding to investigate the effect of spherical nanofillers on the thermal stability of PLA. The nanocomposites displayed improved thermal stability both under nitrogen and in air. The stabilization mechanism was attributed mainly to the barrier effect of the network formed, which was demonstrated by the improved barrier properties and rheological performance. The dispersion of nanofiller and matrix-nanoparticle interactions were investigated to evaluate the dependence of the network on SiO(2) loadings. Fourier transform infrared spectroscopy and thermogravimetric analysis indicated that hydroxyl groups on SiO(2) surfaces and PLA chain-ends reacted during melt processing. The resulting grafted SiO(2) and entangled PLA chains formed a dense network, which hindered the diffusion of oxygen and volatile decomposition products. Furthermore, the improvement in thermal stability resulted from the restraining effect on the mobility of active hydroxyl end-groups, so that some related thermal decomposition reactions were inhibited, which was confirmed from gel permeation chromatography measurements. (C) 2010 Society of Chemical Industry |
| 语种 | 英语 |
| WOS记录号 | WOS:000287058300006 |
| 出版者 | JOHN WILEY & SONS LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/71287]  |
| 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.NE Normal Univ, Coll Life, Changchun 130024, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wen, Xin,Zhang, Kunyu,Wang, Yan,et al. Study of the thermal stabilization mechanism of biodegradable poly(L-lactide)/silica nanocomposites[J]. POLYMER INTERNATIONAL,2011,60(2):202-210. |
| APA | Wen, Xin.,Zhang, Kunyu.,Wang, Yan.,Han, Lijing.,Han, Changyu.,...&Dong, Lisong.(2011).Study of the thermal stabilization mechanism of biodegradable poly(L-lactide)/silica nanocomposites.POLYMER INTERNATIONAL,60(2),202-210. |
| MLA | Wen, Xin,et al."Study of the thermal stabilization mechanism of biodegradable poly(L-lactide)/silica nanocomposites".POLYMER INTERNATIONAL 60.2(2011):202-210. |
入库方式： OAI收割
来源：化学研究所
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