Studies on the structure and properties of thermotropic liquid crystalline poly(aryl ether ketone)s
文献类型：期刊论文
| 作者 | Zhang, SJ; Fu, LX; Yang, DC; Sun, H; Wang, GB; Wu, ZW |
| 刊名 | CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE
 |
| 出版日期 | 2001-02-01 |
| 卷号 | 22期号:2页码:334-337 |
| 关键词 | Poly(Aryl Ether Ketone)s Liquid Crystalline Polymers Structure And Properties |
| ISSN号 | 0251-0790 |
| 英文摘要 | Series of thermotropic liquid crystalline poly (aryl ether ketone) s were synthesized by mucleophilic substitution reactions of 4,4'-biphenol and substituted hydroquinone with different difluoromonomers, The relationship between structure and properties of the novel copolymers was investigated. For the copolymers with liquid crystalline properties, their melting transition temperatures show no great change with increase the content of the crystal-disrupting unit. The reason is that the crystal phase is directly transformed from the ordered liquid crystal phase. Side-groups have important effect on mesophase stability, The temperature range of mesophase stability for the chloro-polymers is smaller than those of other series of copolymers (P-phenyl, t-butyl, methoxy, 3-trifluoromethylbenzene). This behavior indicates that the effect of geometric repulsive factor on the thermodynamic stability of the mesophase is much larger than that of the polarizability attractive factor. Different ordered liquid crystal phases are observed in the polymers with different molecular weights. At low molecular weight, highly ordered smectic liquid crystal phases form. With increasing the molecular weight, the ordered degree of the liquid crystals decreases, and only the nematic liquid crystal phase is observed in the polymer with higher molecular weight. |
| 语种 | 英语 |
| WOS记录号 | WOS:000167220600041 |
| 出版者 | HIGHER EDUCATION PRESS |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/76877]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Yang, DC |
| 作者单位 | 1.Acad Sinica, Changchun Inst Appl Chem, State Key Lab Polymer Phys & Chem, Changchun 130022, Peoples R China 2.Jilin Univ, Dept Chem, Natl R&D Ctr Super Engn Plast, Changchun 130023, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhang, SJ,Fu, LX,Yang, DC,et al. Studies on the structure and properties of thermotropic liquid crystalline poly(aryl ether ketone)s[J]. CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,2001,22(2):334-337. |
| APA | Zhang, SJ,Fu, LX,Yang, DC,Sun, H,Wang, GB,&Wu, ZW.(2001).Studies on the structure and properties of thermotropic liquid crystalline poly(aryl ether ketone)s.CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE,22(2),334-337. |
| MLA | Zhang, SJ,et al."Studies on the structure and properties of thermotropic liquid crystalline poly(aryl ether ketone)s".CHEMICAL JOURNAL OF CHINESE UNIVERSITIES-CHINESE 22.2(2001):334-337. |
入库方式： OAI收割
来源：化学研究所
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