β相聚偏氟乙烯(PVDF)因其具有良好的压电、热电性能而受到广泛的关注.按质量比聚偏氟乙烯(PVDF)/聚醚酰亚胺(PEI)为8/2的混合聚合物溶解在N,N-二甲基甲酰胺(DMF)、四氢呋喃(THF)不同比例的混合溶剂中.利用静电纺丝技术制备PVDF/PEI复合纤维薄膜.通过SEM、XRD、FT-IR测试分析静电纺丝过程中不同溶剂质量比以及不同后处理温度对制备的PVDF/PEI复合纤维膜的结晶度、结晶部分中β相含量和复合纤维薄膜铁电性能的影响,得到了制备高β相含量PVDF的最优化的溶剂配比和后处理温度.
βphase polyvinyldiene fluoride (PVDF)has attracted much attention due to its excellent piezoelectric and pyroelectric properties.In this paper,PVDF and polyetherimide(PEI)are dissolved in component solvent according to the mass ratio of m(PVDF)/m(PEI)=8/2,the mixed solvent is composed of N,N-dimethyl-formamide and tetrahydrofuran on the basis of different mass ratio.PVDF/PEI composite fiber membrane was prepared using the electrospinning technology.SEM,XRD and FT-IR were used to analyzed the influences of different solvent mass ratio and post processing temperature on fiber morphology,crystallinty,the content of beta phase,and the ferroelectric properties of electrospinning PVDF/PEI composite fibrous membranes The op-timal solvent ratio and the post-treatment temperature were obtained.
参考文献
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