Electric activity in rigid rod-like polymer, poly(β-hydroxybutyrate)
Electric activity in rigid rod-like polymer, poly(β-hydroxybutyrate)
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DOI：
10.1016/j.polymer.2006.05.010
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发表时间：
2006-06
期刊：
影响因子：
4.6
通讯作者：
A. Sugita;M. Mitsubayashi;S. Tasaka
中科院分区：
文献类型：
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作者：
A. Sugita;M. Mitsubayashi;S. Tasaka
聚β-羟基丁酸酯（PHB）具有丰富的电活性，是最有前途的环境友好聚合物之一。我们的实验结果表明，聚羟基丁酸酯具有铁电行为，以及热释电行为。由位移场滞后回线测得的100°C时的回复极化率为67 mC/m2，极化后的热释电系数为20μC/m2 K。反射极化具有独特的温度依赖性，在80°C以上迅速增加。由于酯偶极有序的极化可能在垂直于螺旋轴的方向上形成。
Poly(β-hydroxybutrate) (PHB), one of the most promising environmental friendly polymers, was found to be rich in electric activities. Our experimental results demonstrated that the PHB exhibited ferroelectric behavior, as well as pyroelectric behavior. A remanent polarization of the PHB system was as large as 67mC/m2at 100°C from a displacement–field hysteresis loop, while it possessed pyroelectric coefficient as large as 20μC/m2K after a poling procedure. The remanent polarization exhibited unique temperature dependence and it increased rapidly at the temperatures higher than 80°C. The polarization due to the ester dipole ordering is likely formed in the direction perpendicular to the helical axis.