Inhibited transesterification and enhanced fibrillation of TLCP by nano-SiO2 in polycarbonate matrix
文献类型：期刊论文
| 作者 | Wu, LC; Chen, P; Zhang, J; He, JS |
| 刊名 | POLYMER
 |
| 出版日期 | 2006 |
| 卷号 | 47期号:1页码:448-456 |
| 关键词 | Transesterification Nano-sio2 Tlcp |
| ISSN号 | 0032-3861 |
| DOI | 10.1016/j.polymer.2005.11.044 |
| 英文摘要 | Hybrid composites composed of a thermotropic liquid crystalline polymer (TLCP), nano-SiO2 and polycarbonate (PC) were prepared by melt blending in a twin-screw extruder. Infrared spectroscopy analysis indicated that the transesterification between PC and TLCP molecules during melt blending was significantly reduced in TLCP/PC blends filled with nano-SiO2, compared to the unfilled TLCP/PC one. Scanning electron microscopy (SEM) observation showed that better compatibility and finer TLCP dispersion were reached in the unfilled blend, which made the fibrillation of TLCP difficult in capillary flow even at high shear rate. In contrast to this, well-developed TLCP fibrils were formed by capillary flow in nano-SiO2 filled TLCP/PC blends. By increasing the nano-SiO2 concentration and shear rate, the fibrillation of TLCP was significantly enhanced. Thermodynamically the interfacial tension between these components and dynamically the viscosity ratio of TLCP to PC were used to investigate the mechanism of nano-SiO2 in inhibiting the transesterification and enhancing the fibrillation of TLCP droplets in these hybrid composites. (c) 2005 Elsevier Ltd. All rights reserved. |
| 语种 | 英语 |
| WOS记录号 | WOS:000234617600057 |
| 出版者 | ELSEVIER SCI LTD |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/59735]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | He, JS |
| 作者单位 | 1.Chinese Acad Sci, Key Lab Engn Plast, Joint Lab Polymer Sci & Mat, Inst Chem, Beijing 100080, Peoples R China 2.Chinese Acad Sci, Grad Sch, Beijing 100039, Peoples R China |
| 推荐引用方式 GB/T 7714 | Wu, LC,Chen, P,Zhang, J,et al. Inhibited transesterification and enhanced fibrillation of TLCP by nano-SiO2 in polycarbonate matrix[J]. POLYMER,2006,47(1):448-456. |
| APA | Wu, LC,Chen, P,Zhang, J,&He, JS.(2006).Inhibited transesterification and enhanced fibrillation of TLCP by nano-SiO2 in polycarbonate matrix.POLYMER,47(1),448-456. |
| MLA | Wu, LC,et al."Inhibited transesterification and enhanced fibrillation of TLCP by nano-SiO2 in polycarbonate matrix".POLYMER 47.1(2006):448-456. |
入库方式： OAI收割
来源：化学研究所
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