侧链磺化型含氟聚芳醚质子交换膜的制备及性能  

Preparation and Properties of Proton Exchange Membranes Based on Side-chain Type Fluorinated Sulfonated Poly( aryl ether)s

作　　者：严小波[1] 张虚略 袁祖凤[1] 耿慧[1] 毕慧平[1] 胡朝霞[1] 陈守文[1] 

机构地区：[1]南京理工大学环境与生物工程学院,南京210094

出　　处：《高分子学报》2016年第5期577-583,共7页Acta Polymerica Sinica

基　　金：国家自然科学基金(基金号21276128;21206075);教育部博士点基金(基金号20123219120009);江苏省自然科学基金(基金号BK20141398);中央高校基本科研业务费专项资金(项目号30920130121014)资助项目

摘　　要：在含氟聚芳醚侧链引入磺化萘酚基团,制备了一类侧链磺化型含氟聚芳醚（s SPFAE）,采用溶液浇铸法制膜并对膜进行了表征和分析.制备的膜材料离子交换容量达到1.42~2.03 mmol/g,均透明柔韧,杨氏模量高于1.0 GPa,拉伸应变达到66%~105%.吸水性及膨胀性测试结果表明该系列膜具有较低的吸水率和良好的尺寸稳定性,在测试温度范围内（30~90℃）吸水率为21%~51%,尺寸变化率低于7%.s SPFAE膜具有良好的热稳定性及氧化稳定性,TGA测试中320~360℃时的重量损失低于5%,在Fenton溶液中80℃处理1 h后的失重率小于2%.同时,该系列膜表现出较高的电导率水平,如SPFAE-0.8膜（IEC=2.03 mmol/g）在80℃时电导率达到217 m S/cm.In order to gain proton exchange membranes with high proton conductivity and stability,a series of side-chain type sulfonated fluorinated poly（ aryl ether） copolymers（ s SPFAEs） are prepared by attaching disulfonated naphthanoyl pendants to the fluoro-containing poly（ aryl ether） backbone,subsequently solution cast into s SPFAE membranes and characterized. The obtained membranes with ion exchange capacity of 1. 42 ~2. 03 mmol / g are transparent and ductile,exhibiting Young’s modulus higher than 1. 0 GPa and elongations at break of 66% ~ 105%. Water absorbing and swelling behavior tests indicate that the obtained s SPFAE membranes have rather low water uptakes and good dimensional stability. In the testing temperature range of 30~ 90 ℃,their water uptakes are about 21% ~ 51% while the swelling ratios less than 7%. They also show considerably good thermal and oxidative stability,the weight losses are no more than 5% at 320 ~ 360 ℃ in TGA tests and below 2% after the Fenton’s tests at 80 ℃ for 1 h,respectively. Moreover,the obtained s SPFAE membranes have fairly high proton conductivity,for example,the proton conductivity reaches 217 m S / cm at80 ℃ for the membrane of s SPFAE-0. 8（ IEC = 2. 03 mmol / g）.

关 键 词：燃料电池 质子交换膜 磺化聚芳醚 含氟聚合物 侧链磺化 

分 类 号：TQ326.5[化学工程—合成树脂塑料工业] TM911.4[电气工程—电力电子与电力传动]