Poly(trimethylene terephthalate)/silica nanocomposites prepared by dual in situ polymerization: synthesis, morphology, crystallization behavior and mechanical properties
文献类型：期刊论文
| 作者 | Yao, Chenguang2,3; Yang, Guisheng1,2 |
| 刊名 | POLYMER INTERNATIONAL
 |
| 出版日期 | 2010-04-01 |
| 卷号 | 59期号:4页码:492-500 |
| 关键词 | Differential Scanning Calorimetry (Dsc) Fourier Transform Infrared (Ftir) Mechanical Properties Morphology Nanocomposites |
| ISSN号 | 0959-8103 |
| DOI | 10.1002/pi.2727 |
| 英文摘要 | The sol-gel technique has provided promising opportunities for the preparation of polymer/inorganic hybrid materials at the molecular level, which ensures the inorganic particles are well dispersed in the organic matrix. In this work, poly(trimethylene terephthalate) (PTT)/silica nanocomposites were fabricated via the sol-gel technique and in situ polymerization. Fourier transform infrared and nuclear magnetic resonance analyses confirmed that some PTT molecular chains were grafted to the surface of silica. Unlike pure PTT, the grafted PTT was insoluble in a mixed solvent of chloroform and hexafluoro-2-propanol. Both transmission electron microscopy and scanning electron microscopy showed that the silica particles, with a size of 40-50 nm, were homogeneously dispersed in the PTT matrix with no preferential accumulation in any region. Differential scanning calorimetry revealed that the glass transition temperature and cold-crystallization peak of the composites gradually increased with increasing silica loading. A simultaneous increase of stiffness and toughness was observed for the nanocomposites. Moreover, polarized optical microscopy showed that the nanocomposites exhibited interesting banded spherulites, which were different from banded spherulites of PTT previously reported. The nanocomposites with covalent bonding between silica and PTT gave a series of interesting results, such as elevated glass transition temperature, simultaneous increase of stiffness and toughness as well as surprising banded spherulites. (C) 2009 Society of Chemical Industry |
| 语种 | 英语 |
| WOS记录号 | WOS:000276870400009 |
| 出版者 | JOHN WILEY & SONS LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/69589]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yang, Guisheng |
| 作者单位 | 1.Shanghai Genius Adv Mat Co Ltd, Shanghai 201109, Peoples R China 2.Chinese Acad Sci, Inst Chem, Joint Lab Polymer Sci & Technol, CAS Key Lab Engn Plast, Beijing 100190, Peoples R China 3.Chinese Acad Sci, Grad Univ, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Yao, Chenguang,Yang, Guisheng. Poly(trimethylene terephthalate)/silica nanocomposites prepared by dual in situ polymerization: synthesis, morphology, crystallization behavior and mechanical properties[J]. POLYMER INTERNATIONAL,2010,59(4):492-500. |
| APA | Yao, Chenguang,&Yang, Guisheng.(2010).Poly(trimethylene terephthalate)/silica nanocomposites prepared by dual in situ polymerization: synthesis, morphology, crystallization behavior and mechanical properties.POLYMER INTERNATIONAL,59(4),492-500. |
| MLA | Yao, Chenguang,et al."Poly(trimethylene terephthalate)/silica nanocomposites prepared by dual in situ polymerization: synthesis, morphology, crystallization behavior and mechanical properties".POLYMER INTERNATIONAL 59.4(2010):492-500. |
入库方式： OAI收割
来源：化学研究所
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