STUDIES ON PROTON CONDUCTIVITY AND METHANOL PERMEABILITY OF SULFONATED POLYETHERETHERKETONE/PHOSPHOTUNGSTIC ACID COMPOSITE MEMBRANES

XUE Song; YIN Geping

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STUDIES ON PROTON CONDUCTIVITY AND METHANOL PERMEABILITY OF SULFONATED POLYETHERETHERKETONE/PHOSPHOTUNGSTIC ACID COMPOSITE MEMBRANES

Research Article | 更新时间：2021-03-19

- STUDIES ON PROTON CONDUCTIVITY AND METHANOL PERMEABILITY OF SULFONATED POLYETHERETHERKETONE/PHOSPHOTUNGSTIC ACID COMPOSITE MEMBRANES
- Acta Polymerica Sinica Issue 9, Pages: 1083-1087(2006)
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- Published：20 December 2006，
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XUE Song, YIN Geping. STUDIES ON PROTON CONDUCTIVITY AND METHANOL PERMEABILITY OF SULFONATED POLYETHERETHERKETONE/PHOSPHOTUNGSTIC ACID COMPOSITE MEMBRANES. [J]. Acta Polymerica Sinica (9):1083-1087(2006)
DOI：

XUE Song, YIN Geping. STUDIES ON PROTON CONDUCTIVITY AND METHANOL PERMEABILITY OF SULFONATED POLYETHERETHERKETONE/PHOSPHOTUNGSTIC ACID COMPOSITE MEMBRANES. [J]. Acta Polymerica Sinica (9):1083-1087(2006) DOI：

摘要

通过磺化反应制备了磺化聚醚醚酮

1H-NMR测试表明其磺化度分别为0.65和0.73.用共混的方法制备了磺化聚醚醚酮/磷钨酸复合质子交换膜.研究了磺化聚醚醚酮的磺化度和磷钨酸的含量对复合膜的吸水性能?电导率

甲醇渗透性能的影响.随着磺化度和磷钨酸含量的增加

电导率逐渐增大

最高达到1.36×10-2S/cm(20℃)

高于相同测试条件下NafionR○117膜的电导率(1.0×10-2S/cm).对复合膜的横向和纵向电导率进行了测试和比较

两者相差接近一个数量级.磷钨酸的掺杂虽然没有降低复合膜的甲醇渗透系数

但是仍然都低于相同条件下测得的NafionR○117膜的甲醇渗透系数.

Abstract

Suffonated polyetheretherketone(SPEEK)with various degree of sulfonation(DS)was prepared by sulfonation of commercial VictrexR PEEK．The DS was determined using 1H-NMR method．A series of composite membranes based on SPEEK and phosphotungstic acid(PWA)were prepared by solution casting method．The effects of the DS and PWA content on water uptake

swelling ratio

proton conductivity and methanol permeability of the composite membranes were investigated．The proton conductivifies of the composite membranes inereased with the DS and the PWA content and reacbed a highest value of 1．36×10-2S／cm(20℃)

which was higher that that of the NafionR117 membrane(1．0×10-2S／cm)measured under the same condition．Nearly one order magnitude difference between conductivities measured in transverse and longitudinal directions was found．Thorugh the methanol permeability increased upon the addition of PWA．the methanol permeability of the composite membranes was all lower than that of the Nafion R 117 membrane．

关键词

磺化聚醚醚酮磷钨酸质子交换膜甲醇渗透

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