Synthesis and characterization of a thermotropic liquid-crystalline poly[2,5-bis(4 ' alkoxycarbonylphenyl)styrene]
文献类型：期刊论文
| 作者 | Zhu, Zhiguo; Zhi, Junge; Liu, Anhua; Cui, Jiaxi; Tang, Hui; Qiao, Wenqiang; Wan, Xinhua; Zhou, Qifeng |
| 刊名 | JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY
 |
| 出版日期 | 2007-03-01 |
| 卷号 | 45期号:5页码:830-847 |
| 关键词 | Mesogen-jacketed Liquid-crystalline Polymer Radical Polymerization Structure-property Relations Alkyl Tail Length Columnar Nematic Phase P-terphenyl Poly[2 5-bis(4 '-alkoxycarbonylphenyl)Styrene] |
| ISSN号 | 0887-624X |
| DOI | 10.1002/pola.21845 |
| 英文摘要 | We report the synthesis and characterization of a series of novel mesogen-jacketed liquid-crystalline polymers, poly[2,5-bis(4-alkoxycarbonylphenyl)styrenels (1-m, where m is the number of carbon atoms in the alkyl tails), along with the corresponding monomers, 2,5-bis(4'-alkoxycarbonylphenyl)styrenes (2-m), and their precursors, 2,5-bis(4'-alkoxycarbonylphenyl)toluenes (3-m). The influence of the tail length on the thermotropic properties of the two types of low-molecular-mass compounds and macromolecules was investigated with a combination of differential scanning calorimetry, polarized optical microscopy, and wide-angle X-ray diffraction techniques. Except for compound 3-3, which exhibited a monotropic nematic phase, all members of the low-molar-mass molecules developed no mesophase during both heating and cooling processes. The glass-transition temperatures of the polymers decreased as the tail lengths increased. The 5% weight loss temperatures of all the polymers under a nitrogen atmosphere were above 360 degrees C, indicating quite high thermal stability. Although polymers 1-1 and 1-2 were non-liquid-crystalline, columnar nematic phases were observed for the remaining homopolymers with longer alkyl tails. The mesophases of 1-3 to 1-9 that developed at high temperatures remained upon cooling to room temperature, whereas those of 1-10 to 1-12 disappeared during the cooling process. (c) 2007 Wiley Periodicals, Inc. |
| 语种 | 英语 |
| WOS记录号 | WOS:000244267700012 |
| 出版者 | JOHN WILEY & SONS INC |
| 源URL | [http://ir.iccas.ac.cn/handle/121111/62353]  |
| 专题 | 中国科学院化学研究所 |
| 通讯作者 | Wan, Xinhua |
| 作者单位 | Peking Univ, Beijing Natl Lab Mol Sci, Key Lab Polymer Chem & Phys, Minist Educ,Coll Chem & Mol Engn, Beijing 100871, Peoples R China |
| 推荐引用方式 GB/T 7714 | Zhu, Zhiguo,Zhi, Junge,Liu, Anhua,et al. Synthesis and characterization of a thermotropic liquid-crystalline poly[2,5-bis(4 ' alkoxycarbonylphenyl)styrene][J]. JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,2007,45(5):830-847. |
| APA | Zhu, Zhiguo.,Zhi, Junge.,Liu, Anhua.,Cui, Jiaxi.,Tang, Hui.,...&Zhou, Qifeng.(2007).Synthesis and characterization of a thermotropic liquid-crystalline poly[2,5-bis(4 ' alkoxycarbonylphenyl)styrene].JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY,45(5),830-847. |
| MLA | Zhu, Zhiguo,et al."Synthesis and characterization of a thermotropic liquid-crystalline poly[2,5-bis(4 ' alkoxycarbonylphenyl)styrene]".JOURNAL OF POLYMER SCIENCE PART A-POLYMER CHEMISTRY 45.5(2007):830-847. |
入库方式： OAI收割
来源：化学研究所
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