引用本文:
李敏, 李洪云, 周恩乐, 徐纪平. 含硝基偶氮苯侧基的丙烯酸酯类液晶聚合物的合成、结构与性质研究Ⅱ.分子结构对Tg的影响[J]. 应用化学,
1993, 10(4): 43-46.
Citation: Li Min, Li Hongyun, Zhou Enle, Xu Jiping. SYNTHESIS AND STRUCTURAL STUDIES OF SIDE CHAIN LIQUID CRYSTALLINE POLYACRYLATES CONTAINING PARA-NITRO AZOBENZENE Ⅱ. THE EFFECT OF MOLECULAR STRUCTURE ON Tg[J]. Chinese Journal of Applied Chemistry, 1993, 10(4): 43-46.
Citation: Li Min, Li Hongyun, Zhou Enle, Xu Jiping. SYNTHESIS AND STRUCTURAL STUDIES OF SIDE CHAIN LIQUID CRYSTALLINE POLYACRYLATES CONTAINING PARA-NITRO AZOBENZENE Ⅱ. THE EFFECT OF MOLECULAR STRUCTURE ON Tg[J]. Chinese Journal of Applied Chemistry, 1993, 10(4): 43-46.
含硝基偶氮苯侧基的丙烯酸酯类液晶聚合物的合成、结构与性质研究Ⅱ.分子结构对Tg的影响
摘要:
利用DSC研究了分子结构对含硝基偶氮苯侧基的丙烯酸酯液晶聚合物玻璃化温度的影响。结果表明,随柔性间隔基长度增加,Tg降低;当引入丙烯酸甲酯(MA)作为非晶共聚组分时,Tg降低;Tg真随MA摩尔百分含量增加而降低;当引入丙烯酸作为非晶共聚组分时,Tg升高。
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关键词:
- 丙烯酸酯类液晶聚合物
- / 共聚物
- / 玻璃化温度
English
SYNTHESIS AND STRUCTURAL STUDIES OF SIDE CHAIN LIQUID CRYSTALLINE POLYACRYLATES CONTAINING PARA-NITRO AZOBENZENE Ⅱ. THE EFFECT OF MOLECULAR STRUCTURE ON Tg
Abstract:
The glass-transition temperatures of the side chain liquid crystalline polyacrylates containing para-nitro azobenzene have been studied by DSC. It was found that the Tg value decreased with increasing the length of the spacer and MA content in the copolymers. But for the copolymers containing acrylic acid the Tg is higher than that of the corresponding homopolymers owing to the presence of hydrogen bond.
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Key words:
- polyacrylate liquid crystalline
- / copolymer
- / glass transition temperature
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