文章摘要
含萘磺化聚芳醚酮(酮)质子交换膜的制备及性能
Synthesis and Properties of Sulfonated Poly(arylene ether ketone/ketone) Containing Naphthalene as Proton Exchange Membranes
  
DOI:10.16865/j.cnki.1000-7555.2018.08.001
中文关键词:   磺化  磺化聚芳醚酮  磺化聚芳醚酮酮  质子交换膜
英文关键词: naphthalene  sulfonate  sulfonated poly(arylene ether ketone)  sulfonated poly(arylene ether ketone ketone)  proton exchange membrane
基金项目:国家自然科学基金青年基金资助项目(21404071);上海应用技术大学人才引进基金(YJ2014-31)
作者单位
程言营, 黄清奇, 刘惠平, 廖慧英, 肖繁花 上海应用技术大学 化学与环境工程学院上海 201418 
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中文摘要:
      通过直接缩聚法合成了含萘的磺化聚芳醚酮(sPEK)和磺化聚芳醚酮酮(sPEKK)2种系列的聚合物,并采用红外光谱、凝胶渗透色谱及热重分析分别表征和测试了聚合物的分子结构、相对分子质量及热性能。以N-甲基吡咯烷酮(NMP)为溶剂,用溶液浇铸法制备质子交换膜,并对膜的离子交换容量(IEC)、吸水率、溶胀率、质子电导率及耐氧化稳定性分别进行了测试表征。结果表明,2种系列聚合物膜中磺化度较高者性能较好。但IEC相近的sPEK和sPEKK膜相比,前者的综合性能优于后者。如sPEK-50在80 ℃的吸水率为46.7%,溶胀率为21.3%,质子电导率为0.048 S/cm,与Nafion117膜的溶胀率和电导率相近。另外,sPEK-50膜在Fenton’s试剂中浸泡1 h后质量损耗,耐氧化稳定性优于同类型芳香族聚芳醚酮膜,显示出较好的综合性能。
英文摘要:
      Two series of sulfonated poly(arylene ether ketone) (sPEK) and sulfonated poly(arylene ether ketone ketone) (sPEKK) were synthesized via direct polycondensation. The structure, the molecular weight and the thermal stability of polymers were confirmed and characterized by FT-IR, gel permeation chromatography (GPC) and thermogravimetric analyzer, respectively. The polymer membranes were prepared by solution casting method. Their properties as proton exchange membranes including ion exchange capacity, water uptake, swelling, proton conductivity and oxidative stability were evaluated. It is demonstrated that two series of membranes with high sulfonation degree display good properties. And sPEK membranes exhibit better overall properties than sPEKK with similar ion exchange capacity (IEC). For example, sPEK-50 shows a swelling of 21.3% and proton conductivity of 0.048 S/cm at 80 ℃ comparable to those of Nafion117. Moreover, it also displays excellent oxidative stability compared to other aromatic poly(arylene ether ketone) membranes. As a result, sPEK-50 membrane exhibits good comprehensive performance.
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