SBIR Phase I: Ferroelectric Biopolymers

SBIR 第一阶段：铁电生物聚合物

• 批准号: 9561304
• 负责人: Debra Trantolo
• 金额: $ 7.5万
• 依托单位: Cambridge Scientific Inc
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 1996
• 资助国家: 美国
• 起止时间: 1996-10-01 至 1997-03-31
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=9561304&HistoricalAwards=false
• 关键词: SBIR; Phase; Ferroelectric; Biopolymers

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.

这个小企业创新研究（SBIR）的第一阶段项目将探索聚（γ -苄基- l-谷氨酸）PBLG的铁电（FE）行为，PBLG是一种α -螺旋聚合物，当从适当的溶剂中铸造时。已知PBLG在磁场或电场中排列时显示出压电（PE）特性。对排列偶极子分子构象的分析表明，在电场作用下，偶极子矢量的方向可能被反转，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。第一阶段将展示FE行为，并继续探索PBLG与聚（异戊二烯）和聚（苯乙烯）的机械相容性共混物。该材料可用于PE和FE性能，并可在换能器和光电开关中找到应用。这些包括热释电探测器，超声波和电声换能器，以及超声波光调制器。