EFFECT OF MESOPHASE SEPARATION ON THE CRYSTALLIZATION DYNAMICS OF OLEFIN BLOCK COPOLYMERS
文献类型：期刊论文
| 作者 | Liu, Guo-ming1; Zhang, Xiu-qin2; Guan, Yu1; Wen, Tao1; Wang, Du-jin1 |
| 刊名 | ACTA POLYMERICA SINICA
 |
| 出版日期 | 2012-12-20 |
| 期号 | 12页码:1434-1440 |
| 关键词 | Olefin Block Copolymer Phase Separation Crystallization |
| ISSN号 | 1000-3304 |
| DOI | 10.3724/SP.J.1105.2012.12092 |
| 英文摘要 | The present study examined the effect of mesophase separation on the crystallizaiton behavior of olefin block copolymer (OBC). Two OBCs with different Delta C8 (octene content difference between the soft and hard segments) were chosen, which were shown to have different phase and crystallization morphology in the solid state. The melt morphology was further examined by rheology. The isothermal crystallization dynamics of OBCs was investigated by differential scanning calorimetry (DSC). The morphology of OBCs after isothermal crystallization was observed utilizing an atomic force microscope (AFM). The results showed that the both the two OBCs exhibited mesophase separation well above the melting temperature. Upon isothermal crystallization, the OBC with higher Delta C8 kept the mesophase separated morphology, while the OBC with lower Delta C8 displayed random distributed lamellar structure. Both the two OBCs had Avrami parameter n approximate to 3, indicating that crystallization of OBC with mesophase separation exhibited a three dimensional spread manner. This striking phenomenon was attributed to the "phase mixing" in OBCs. Some shorter crystalline hard segments can dissolve in the amorphous soft phase, which can transfer the growth of crystals into adjacent hard segment domains upon crystallization. |
| 语种 | 英语 |
| WOS记录号 | WOS:000314139500012 |
| 出版者 | SCIENCE PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/49817]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Liu, Guo-ming |
| 作者单位 | 1.Chinese Acad Sci, Beijing Natl Lab Mol Sci, CAS Key Lab Engn Plast, Inst Chem, Beijing 100190, Peoples R China 2.Beijing Inst Fash Technol, Beijing Key Lab Clothing Mat R&D & Assessment, Dept Mat Sci & Engn, Beijing 100029, Peoples R China |
| 推荐引用方式 GB/T 7714 | Liu, Guo-ming,Zhang, Xiu-qin,Guan, Yu,et al. EFFECT OF MESOPHASE SEPARATION ON THE CRYSTALLIZATION DYNAMICS OF OLEFIN BLOCK COPOLYMERS[J]. ACTA POLYMERICA SINICA,2012(12):1434-1440. |
| APA | Liu, Guo-ming,Zhang, Xiu-qin,Guan, Yu,Wen, Tao,&Wang, Du-jin.(2012).EFFECT OF MESOPHASE SEPARATION ON THE CRYSTALLIZATION DYNAMICS OF OLEFIN BLOCK COPOLYMERS.ACTA POLYMERICA SINICA(12),1434-1440. |
| MLA | Liu, Guo-ming,et al."EFFECT OF MESOPHASE SEPARATION ON THE CRYSTALLIZATION DYNAMICS OF OLEFIN BLOCK COPOLYMERS".ACTA POLYMERICA SINICA .12(2012):1434-1440. |
入库方式： OAI收割
来源：化学研究所
浏览0
下载0
收藏0
其他版本
除非特别说明，本系统中所有内容都受版权保护，并保留所有权利。