| 热致液晶性序列嵌段共聚酯的多重热转变 |
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| 引用本文： | 朱诚身 莫志深. 热致液晶性序列嵌段共聚酯的多重热转变[J]. 功能高分子学报, 1991, 4(4): 290-294 |
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| 作者姓名： | 朱诚身 莫志深 |
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| 作者单位： | 郑州大学化学系 450052(朱诚身，李自法)，中国科学院长春应用化学研究所 130022(莫志深，王尚儿，李丽霞)，郑州大学化学系 450052(张子勇) |
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| 摘 要： | 本文利用DSC研究了热致液晶性序列嵌段共聚酯在不同升温速率时的多重熔融转变,和不同冷却速率对结晶与熔融过程的影响。发现T_(kn)和T_(ni)与热历史、升温速率及成形条件均无关,T_(kn)=425.86K,T_(nt)=480.60K;而T_(in)与T_(nk)随冷却速率增大而降低。
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| 关 键 词： | 热致液晶 序列嵌段 共聚酯 热转变 |
Multiple Thermal Transitions of Thermotropic Sequential Block Copolyester |
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| Zhu Chengshen,Mo Zhishen. Multiple Thermal Transitions of Thermotropic Sequential Block Copolyester[J]. Journal of Functional Polymers, 1991, 4(4): 290-294 |
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| Authors: | Zhu Chengshen Mo Zhishen |
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| Affiliation: | Zhu Chengshen~*,Mo Zhishen~ |
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| Abstract: | The multiple thermal transitions of a thermotropic sequential block copolyester, which was synthesized by polycondensation of 1,10-decanediol (80 in weight), poly(oxytetramethylene) glycol (M.W. = 1050,20 in weight) and 2-methyl-p-phenylene di (4-chloroformyl) benzoate, have been studied by DSC. The transitional temperatures of the crystal (K) to nematic liquid crystal (N), T_(kn), and N to isotropic liquid (I), T_(ni), are independent on the thermal history and the forming condition, T_(kn)= 425.86K, T_(ni)=480.60K. But the temperatures of I to N and N to K are reduced with the raising of cooling rate. |
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| Keywords: | Thermotropic liquid crystal Sequential block copolyester Mutiple transition Transitional temperature. |
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