中文摘要：

为了提高PAN的压电性能,利用静电纺丝法制备了不同BaTiO3质量分数下PAN电纺纤维膜,通过实验室自制压电设备、SEM、FTIR、XRD以及介电谱仪等对电纺纤维膜压电性能进行表征与分析.测试结果表明：用硅烷偶联剂（KH550）处理后的BaTiO3可均匀地分散在PAN纳米纤维内.与PAN电纺纤维膜相比,当BaTiO3质量分数为12.5%时PAN/BaTiO3电纺纤维膜的输出电压提高了300%,介电常数提高了300%,而介电损耗却降低了67%;FTIR与XRD测试结果显示,BaTiO3的加入可促进PAN从31螺旋构象向平面锯齿构象的转变,从而提高PAN的压电性能.

英文摘要：

To enhance the piezoelectric of PAN, PAN membranes with different content of BaTiO3 nanoparticles were pre-pared via electrospinning method. The piezoelectricity of the membranes were tested and analyzed by homemade power generating device, SEM, FTIR, XRD and dielectric spectrometer. The results showed thatthere wasa uni-form distribution of BaTiO3 nanoparticles modified by silane coupling agent （KH550） in PAN nanofibers. The output voltage and dielectric constant of PAN/BaTiO3 nanocomposites with 12.5% BaTiO3 nanoparticles were both increased by 300% compared with that of PAN membrane, while the dielectric loss of PAN/BaTiO3 nanocompos-ites with 12.5% BaTiO3 nanoparticles was decreased by 67% compared with that of PAN membrane. The results of FTIR and XRD showed that BaTiO3 nanoparticles promoted the transformation of conformation for PAN from 31 helical conformation to zig-zag conformation,consequently enhanced the piezoelectricity of PAN.