| 芳-脂族共聚酯酰胺热致液晶的合成和表征 |
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| 引用本文： | 刘德山,傅清红,周其庠. 芳-脂族共聚酯酰胺热致液晶的合成和表征[J]. 清华大学学报(自然科学版), 1990, 0(3) |
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| 作者姓名： | 刘德山 傅清红 周其庠 |
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| 作者单位： | 化学工程系(刘德山，傅清红)，化学工程系(周其庠) |
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| 摘 要： | 利用芳－脂复合二酰氯和四种芳族二元胺合成了３个系列含有两种芳香二胺结 构单元的无规芳－脂共聚酯酰胺，其对数比浓粘度为 １．３０～２．１８ ｄＬ／ｇ。用偏光显微镜、 Ｘ光衍射和ＤＳＣ对聚合物的液晶行为进行了研究。
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| 关 键 词： | 芳-脂共聚酯酰胺 液晶行为 热致液晶 向列型液晶 |
Synthesis and Characterization of Thermotropic Liquid Crystalline Aromatic-Aliphatic Copolyesteramide with Two Kinds of Aromatic Diamine Units |
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| Liu Deshan,Fu Qinghong,Zhou Qixiang. Synthesis and Characterization of Thermotropic Liquid Crystalline Aromatic-Aliphatic Copolyesteramide with Two Kinds of Aromatic Diamine Units[J]. Journal of Tsinghua University(Science and Technology), 1990, 0(3) |
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| Authors: | Liu Deshan Fu Qinghong Zhou Qixiang |
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| Affiliation: | Department of Chemical Engineering |
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| Abstract: | The complex diacid chloride and four kinds of aromatic diamines were used for the synthesis of aromatic-aliphatic copolyesteramide (PEA). Three series of thermotropic liquid crystals were prepared by low temperature solution polycondensation. The inherent viscosity of these PEAs obtained was 1.30-2.18 dL/g. The thermotropic nematic liquid crystalline behaviour of these PEAS was characterized by polarizing microscope, X-ray diffraction and DSC. The Tm and Td depended on the ratio of the amount of phenylenediamine and another aromatic diamine used in the polycondensation. |
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| Keywords: | aromatic-aliphatic copolyesteramide liquid crystalline behaviour thermotropic liquid crystal nematic liquid crystal |
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