基于磺化聚芳醚砜的共混质子交换膜制备及性能  

Preparation and Properties of Blend Proton Exchange Membranes Based on Sulfonated Poly(arylene ether sulfone)s

作　　者：陶应勇[1] 高智琳[1] 毕慧平[1] 胡朝霞[1] 陈守文[1] 王连军[1] 

机构地区：[1]南京理工大学环境与生物工程学院,江苏南京210094

出　　处：《南京理工大学学报》2011年第6期873-877,共5页Journal of Nanjing University of Science and Technology

基　　金：国家自然科学基金青年基金(21006052);高等学校博士学科点专项科研基金(M20103389);江苏省自然科学基金(BK2010482);南京理工大学自主科研专项计划(2011ZDJH10)

摘　　要：为了提高磺化聚芳醚砜(SPAES)类质子交换膜的质子导电率及尺寸稳定性,制备了一系列N型(或T型)SPAES共混质子交换膜。采用共混方式,利用具有不同离子交换容量(IEC)的磺酸钠盐(或磺酸三乙胺盐)型SPAES进行了制备。通过测试得到共混膜的膜面方向及厚度方向的尺寸变化率。采用电化学阻抗光谱技术测定共混膜在平面方向的质子导电率。结果表明:T型共混膜的共混性高于N型共混膜;共混膜的尺寸稳定性明显增强,如IEC为2.07 meq/g的T50共混膜在30℃水中膜平面方向及厚度方向的尺寸变化率仅为0.14和0.15;共混膜在温度60℃相对湿度30%～100%下质子导电率(8～247 mS/cm)与纯SPAES膜相当。In order to improve the proton conductivity and dimensional stability of proton exchange membranes derived from sulfonated poly（arylene ether sulfone）s（SPAES）,a series of N（or T）-type SPAES blend membranes are prepared.The blending method is proposed,and sodium salt form（or triethylamine salt form）SPAES with different ion exchange capacities（IEC）are used.The dimensional changes in the in-plane and through-plane direction of blend membranes are obtained from a test.The proton conductivities of blend membranes in the in-plane are tested by electrochemical impedance spectroscopy.The results show that the T-type blend membranes have better intermiscibility than the N-type ones.The dimensional stabilities of both types of blend membranes are enhanced.The T50 blend membrane（IEC=2.07 meq/g）exhibits dimensional changes of 0.14 and 0.15 in the in-plane and through-plane direction in the water of 30 ℃.The blend membranes show comparable proton conductivities（8~274 mS/cm）with pure SPAES membranes around 30%~100% relative humidity at 60 ℃.

关 键 词：磺化聚芳醚砜 质子交换膜 磺酸钠盐 磺酸三乙胺盐 共混 离子交换容量 

分 类 号：TM911.48[电气工程—电力电子与电力传动]