SBIR Phase I: Ferroelectric Biopolymers

邮编：9561304 这个小企业创新研究（SBIR）第一阶段项目将探索聚（γ-苄基-L-谷氨酸盐）PBLG的铁电（FE）行为，PBLG是一种α-螺旋聚合物，当从适当的溶剂中浇铸时。 已知PBLG在磁场或电场中排列时显示出压电（PE）性质。 排列的偶极子的分子构象的分析表明，在对齐PBLG膜的偶极子矢量的方向可以通过施加电场反转，从而产生FE行为。 PBLG还具有显著的热稳定性、成膜能力和易于对准。 第一阶段将证明FE行为，并继续探索PBLG与聚（异戊二烯）和聚（苯乙烯）的机械兼容共混物。 这种材料的PE和FE性能以及在传感器和电光开关中的应用是有用的。 这些包括热电探测器、超声和电声换能器以及超声光调制器。

DMI-9561304 Trantolo This Small Business Innovation Research (SBIR) Phase I project will explore ferroelectric (FE) behavior of poly(gamma-benzyl-L-glutamate), PBLG, which is an alpha-helical polymer when cast from appropriate solvents. PBLG is known to display peizoelectric (PE) properties when aligned in magnetic or electric fields. Analysis of the molecular conformation of the aligned dipoles suggests that the direction of the dipole vector in aligned PBLG films may be reversed by application of an electric field, thus producing FE behavior. PBLG also has notable thermal stability, film-forming capability, and ease of alignment. Phase I will demonstrate FE behavior and continue to explore mechanically compliant blends of PBLG with poly(isoprene) and poly(styrene). This material could be useful for its PE and FE behavior and fi9nd application in transducers and and electro-optical switching. These include pyroelectric detectors, ultrasonic and electro-acoustic transducers, and ultrasonic light modulators.