磺化聚醚醚酮磺化度的测定及其对质子交换膜性能的影响
Testing of Sulfonation Degree of SPEEK and its Effect on Properties of Proton Exchange Membrane
摘 要
以聚醚醚酮(PEEK)和浓硫酸为原料, 采用后磺化法制备不同磺化度的磺化聚醚醚酮(SPEEK)。采用核磁共振法测定SPEEK的磺化度, 并研究了磺化度对SPEEK质子交换膜性能的影响。结果表明: 磺化度高于80%的SPEEK会发生过度溶胀, 而磺化度为48%~65%范围的SPEEK膜表现出较好的质子传导率、阻醇性能及抗吸水性能。
磺化度
核磁共振谱
质子交换膜
SPEEK
degree of sulfonation
nuclear magnetic resonance spectrum
proton exchange membrane
Abstract
Sulfonated polyether ether ketone (SPEEK) with various degree of sulfonation (DS) was prepared by commercial Victrex PEEK and concentrated sulphuric acid. Nuclear magnetic resonance (NMR) was used to measure the DS of SPEEK, then the influence of the DS to SPEEK performance was studied. Results showed that when the DS was above 80%, SPEEK would be excessive swelling, while the DS was between 48%-65%, SPEEK has good proton conductivity and methanol resistance properties and water absorption.
中图分类号 TQ324
所属栏目
基金项目 国家自然科学基金项目(50975167); 上海市重点学科项目(S30107); 国家级大学生创新基金项目(CXJJ09-17)
收稿日期 2011/3/4
修改稿日期
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备注董云凤(1985-),女, 工学硕士。
引用该论文: DONG Yun-feng,TAN Xiao-lin,GUO Qiang,LI Xia,LI Dan,LI Meng. Testing of Sulfonation Degree of SPEEK and its Effect on Properties of Proton Exchange Membrane[J]. Physical Testing and Chemical Analysis part A:Physical Testing, 2011, 47(9): 535～538
董云凤,谭孝林,郭强,李夏,李丹,李萌. 磺化聚醚醚酮磺化度的测定及其对质子交换膜性能的影响[J]. 理化检验－物理分册, 2011, 47(9): 535～538
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参考文献
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【2】陆威, 鲁德平, 龚春丽,等.质子交换膜燃料电池用膜材料的性能表征[J].高分子通报, 2005(1):101-107.
【3】ZAIDI S M J, MIKHAILENKO S D, ROBERTSON G P, et al. Proton conducting composite membranes from polyether ether ketone and heteropolyacids for fuel cell applications[J]. Journal of Membrane Science,2000,173:17-34.
【4】XING P X, ROBERTSON G P, GUIVER M D, et al. Synthesis and characterization of sulfonated poly (ether ether ketone) for proton exchange membranes[J]. Journal of Membrane Science, 2004,229:95-106.
【5】宋会平, 郭强, 许乐波. 直接甲醇燃料电池用磺化聚醚醚酮质子交换膜[J].材料科学与工艺, 2008,16(3):362-265.
【6】TONG J Y,GUO Q, WANG X X. Properties and structure of SPEEK proton exchange membrane doped with nanometer CeO2 and treated with high magnetic field[J].Express Polymer Letters, 2009,3(12):821-831.
【7】许乐波, 郭强, 宋会平. 燃料电池质子交换膜电导与阻醇性能测试方法研究[J].理化检验-物理分册, 2006,42(4):180-183.
【8】LI L, ZHANG J, WANG Y X. Sulfonated poly (ether ether ketone) membranes for direct methanol fuel cell[J].Journal of Membrane Science, 2003, 226: 159-167.
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