加热和拉伸对磺化聚苯醚膜导电性能的影响

Effect of Heating and Stretching Membrane on Ionic Conductivity of Sulfonated Poly（Phenylene Oxide）

将磺化聚苯醚SPPO膜在静态热力学分析仪上选择不同的拉力与程序升温过程拉伸，并用Solarton SI 1260和1296仪测试电导率，结果发现热力学处理对SPPO膜的导电性能有较大影响，其中最大可提高约10倍，达到0．0983S／cm。XRD表明经热拉伸后的SPPO膜的分子链比拉伸前排列得更整齐，SEM表明经热力学拉伸后的SPPO膜表面离子磺酸基团比未拉伸前相互连接更多、更长。且趋向拉伸方向，

The SPPO membranes were heat-treated and stretched with various forces by thermal mechanical analyzer, and the effect on ion conductivity of SPPO was investigated by Solatron phase analyzer. Test results show that mechanical stretching of SPPO under proper heating treatment has great effect on electric properties of SPPO, and the highest conductivities achieved increased about ten times and reached 0. 0983 S/cm. The X-ray diffraction indicated that the molecular chains of SPPO arranged more regularly under constraint during the heat treatment and the scanning electron microscopy demonstrated that the morphologies of the film surfaces possessed more co-continuous regions and the hydrophilic ionic sulfonic acid groups orientated at stretching direction.