Fukada E
Biorheology. 1984;21(1-2):75-84. doi: 10.3233/bir-1984-211-212.
Studies on piezoelectricity in biopolymers are reviewed with some examples. By measuring anisotropy of elastic and piezoelectric constants in fish skin, the direction of preferred orientation of collagen fibers is determined. Temperature and moisture dependence of real and imaginary parts of the piezoelectric constant observed for oriented film of fibrin gel indicates that temperature-time equivalence holds for the piezoelectric relaxation. The piezoelectric constant for oriented film of polyhydroxybutyrate decreases above glass transition temperature, which is related to the elastic and dielectric relaxations. When alpha-helical molecules of poly-gamma-methyl-L-glutamate are electrically oriented in ethylene dichloride solution and shear stress is given by ultrasound, the piezoelectric polarization is observed. When the film of poly-gamma-methyl-glutamate is wrapped around the femur of rat, the formation of new bone is produced.
本文通过一些实例回顾了生物聚合物中压电性的研究。通过测量鱼皮中弹性常数和压电常数的各向异性，确定了胶原纤维的择优取向方向。对纤维蛋白凝胶取向膜观察到的压电常数实部和虚部的温度及湿度依赖性表明，压电弛豫存在温度-时间等效性。聚羟基丁酸酯取向膜的压电常数在玻璃化转变温度以上降低，这与弹性和介电弛豫有关。当聚-γ-甲基-L-谷氨酸的α-螺旋分子在二氯乙烷溶液中进行电取向并通过超声施加剪切应力时，可观察到压电极化现象。当聚-γ-甲基-L-谷氨酸膜包裹在大鼠股骨周围时，会促进新骨形成。
