膜科学与技术

多嵌段磺化聚醚砜质子交换膜材料的制备及性能研究

作者：谢伟芳

单位：江苏开放大学??环境与生态学院??江苏210036

关键词：多嵌段聚合物；聚醚砜；质子交换膜；甲醇燃料电池

出版年,卷(期):页码： 2018,38(6):63-68

摘要：

本文制备了出了一系列磺化度为44.6%、49.7%和54.4%的磺化-非磺化四嵌段聚芳醚砜材料，并将其用于直接甲醇燃料电池的质子交换膜。这种四嵌段聚芳醚砜薄膜具有互穿网络微观结构，亲-疏水相分离尺度较小。与具有类似结构的两嵌段聚芳醚砜相比，其质子传导相关性能更为优异。随温度和磺化度升高，所制备的质子交换膜的吸水率、甲醇透过率、离子交换容量和质子传导率均升高。当温度为90 ℃，磺化度为54.4%时，相应薄膜的质子传导率较高，为9.4 mS/cm，且甲醇透过率依然较低，仅为3.80×10-8 L/m·s。

A series of multi-block sulfonated polyethersulfone with various sulfonation degree of 44.6%, 49.7% and 55.4% were synthesized, which were thus prepared as proton exchange membrane in direct methanol fuel cell. A type of interpenetrating networks was observed in these four-block sulfonated polyethersulfone membranes. Therefore, compared with the two-block sulfonated polyethersulfone, these prepared four-block sulfonated polyethersulfone membranes exhibited improved proton conduction performance. As the temperature and sulfonation degree increased, the water absorption, methanol transmissivity, ion exchange capacity and proton conductivity of the prepared proton exchange membrane were also increased. When the temperature was 90 °C, sulfonation degree was 55.4%, the proton conductivity of the corresponding membrane was as high as 9.38×10-3 S/cm, and the methanol transmittance was relatively low as 3.80×10-8 L/m·s.

第一作者简介：谢伟芳（1984.3——），?男?，福建莆田，汉?，硕士，实验师，研究方向：水处理邮箱：847794004@qq.com

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