TS及其不同聚合程度聚合物的热电行为

Pyroelectric Behaviour of TS and Its Polymers with Various Degree of Polymerization

研究了双(对甲苯磺酸)2,4-已二炔-1,6-二醇酯(TS)及其不同聚合程度聚合物在100K-300K温度范围内的热电行为。在沿分子堆砌方向上观察到了他们的热电电流,并在相应于他们相变处呈现有热电电流峰。根据电流峰对应的温度绘制了TS-PTS体系的相图。

Pyroelectric behaviour of bis (p-toluene suminate) of 2, 4-hexadiyne- 1, 6-diol (TS) and its polymers with various degree of polymerization has been investigated. For pure monomer TS and the samples annealing time less than 20 hours at 60℃, two peaks of pyroelectric current at about 152K and 192K respectively were observed, meaning there is a stable incommensurable phase in them between the temperature range of 152K- 192K. Thus, 152K should be the phase transition temperature from low temperature commensurable phase to incommensurable one, and 192K the phase transition temperature one. There was only one pyroelectric peak at about 190K in the samples annealing time more than 30 hours. The incommensurable phase disap- pears. The temperature is the phase transition from low temperature commensurable phase to high temperature one. From this point, the phase diagram was constructed. The crossing of high temperature phase line and low temperature one is corresponding to the self-acceleration stage of TS polymerization at 60℃.