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高分子的凝聚态结构具有多层次性,在微纳米尺度上有效地控制高分子的凝聚态结构,进而探索在微纳米尺度上凝聚态结构与性能的关系,将为高分子分子层次和宏观层次的结构与性能之间架起桥梁。本文综述了近年来我们课题组在铁电高分子聚偏氟乙烯-三氟乙烯共聚物方面的研究及其进展。发展了在纳米尺度上控制高分子片晶取向的新方法并应用到聚偏氟乙烯-三氟乙烯体系,构筑了取向高度有序的铁电高分子纳米结构阵列,分析了片晶取向与聚偏氟乙烯-三氟乙烯微观铁电和压电性能之间的关系,有效降低了以聚偏氟乙烯-三氟乙烯为主要材料的有机铁电非易失性存储器的读写电压。
The condensed state structure of polymer has multi-layer structure and effectively controls the condensed state structure of polymer at the micro-nano scale, and then explores the relationship between condensed state structure and properties at the micro-nano scale, which will be the molecular level and macroscopic level The structure and performance of the bridge between. This review summarizes the research and progress of our group in ferroelectric polymer PVDF-Trifluoroethylene copolymer in recent years. A new method to control the orientation of polymer lamellae at the nanometer scale was developed and applied to the PVDF-Trifluoroethylene system. An array of oriented highly ordered ferroelectric polymer nanostructures was developed. Vinylidene fluoride - Trifluoroethylene micro-ferroelectric and piezoelectric properties of the relationship between the effective reduction of polyvinylidene fluoride - trifluoroethylene as the main material of the organic ferroelectric non-volatile memory read and write voltage.