| 含X-型和棒型两种液晶基元的主链型系列芳族共聚酯的研究 |
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| 引用本文： | 李自法,张子勇,付向阳,周其凤. 含X-型和棒型两种液晶基元的主链型系列芳族共聚酯的研究[J]. 高分子学报, 1992, 0(5) |
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| 作者姓名： | 李自法 张子勇 付向阳 周其凤 |
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| 作者单位： | 郑州大学化学系，郑州大学化学系，郑州大学化学系，北京大学化学系 郑州，邮政编码:450052，郑州，邮政编码:450052，郑州，邮政编码:450052，北京，邮政编码:100871 |
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| 摘 要： | 采用含X-型和棒型液晶基元的两种不同单体,通过改变X-型液晶基元单体的结构和柔性链段长度,经高温溶液缩聚,合成了一系列主链型共聚液晶高分子.研究发现,所有样品都具有很好的热致液晶性及宽广的液晶态温度范围.随单体结构改变,共聚物的相转变温度大致呈规律性变化.
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| 关 键 词： | 液晶高分子 共聚液晶高分子 X-型液晶基元 棒型液晶基元 二维液晶基元 4 4’-(烷亚甲基二酰氧)二苯甲酰氯 2 5-二羟基-1 4-苯亚甲基双-(对烷氧基苯甲酸酯)、4 4’-二羟基联苯 |
STUDY OF A SERIES OF AROMATIC COPOLYESTERS WITH X-SHAPED AND ROD-SHAPED MESOGENS IN THE MAIN CHAIN |
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| LI Zifa,ZHANG Ziyong,FU Xangyang. STUDY OF A SERIES OF AROMATIC COPOLYESTERS WITH X-SHAPED AND ROD-SHAPED MESOGENS IN THE MAIN CHAIN[J]. Acta Polymerica Sinica, 1992, 0(5) |
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| Authors: | LI Zifa ZHANG Ziyong FU Xangyang |
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| Abstract: | In this paper, two types of mesogenic units, two-dimensional X-shaped and rod-shaped, were copolymerized into the polymer chains. A series of aromatic copolyesters were synthesized by solution polycondensation at the refluxing temperature. The copolymers were all thermotro-pic liquid crystalline. The transition temperatures of the copolymers regularly changed with the substituents in the X-shaped mesogens and with the length of flexible spacers between two mesogens in the chain. |
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| Keywords: | Liquid crystalline polyme Two-dimensional mesogens X-shaped mesogens Rod-shaped mesogens 4 4'-(Alkylene-dioyldioxy) dibenzoyl dichloride |
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