Preparation and Properties of Sulfonated Poly(vinyl alcohol)/Poly (aryl ether ketone) with Pendant Sulfoalkyl Groups Crosslinked Composite Proton Exchange Membrane

被引：0

作者：

Cheng H. ^{[1
]}

Han K. ^{[1
]}

Sun J. ^{[1
]}

Zheng R. ^{[1
]}

Li A. ^{[1
]}

Luan L. ^{[1
]}

Guan D. ^{[1
]}

Tao L. ^{[1
]}

机构：

[1] School of Materials Science and Engineering, Jilin Institute of Chemical Technology, Jilin

来源：

Gaofenzi Cailiao Kexue Yu Gongcheng/Polymeric Materials Science and Engineering | 2024年 / 40卷 / 04期

关键词：

crosslinked composite proton exchange membranes; sulfated poly (vinyl alcohol); sulfonated poly (aryl ether ketone) with pendant sulfonic acid groups;

D O I：

10.16865/j.cnki.1000-7555.2024.0067

中图分类号：

学科分类号：

摘要：

The sulfated poly(vinyl alcohol) (SPVA)/sulfonated poly(aryl ether ketone) with pendant sulfonic acid groups (S- SPAEK) crosslinked composite membranes (Cr- SSPxx) with different contents of SPVA were prepared by solution blend method. The Cr-SSPxx crosslinked composite membranes were obtained by heating reaction at 140 ℃. Fourier transform infrared spectroscopy (FT- IR) spectra show that the covalent band crosslinked structure is formed between the sulfonic acid groups on S-SPAEK and hydroxyl groups on SPVA. The scanning electron microscope(SEM) images show that the crosslinked composite membranes present better compatibility and uniformity. Through the performance research of the series of membranes, it is found that the crosslinked network structure effectively enhances the mechanical properties, thermal stability, oxidation stability and dimensional stability of the crosslinked composite membranes. The swelling rate of the crosslinked membranes shows an obvious decreasing trend with the increase of crosslinking degree. The swelling rate of CrSSP30 membrane is only 3.7% and 7.6% at 25 ℃ and 80 ℃, respectively. The Cr-SSPxx membranes exhibit excellent methanol resistance due to the hindering effect on methanol of SPVA and the cross- linked network structure increasing the density of membrane. The methanol permeability of the crosslinked composite membranes is significantly lower than that of the S- SPAEK membrane and SPVA/S- SPAEK composite membrane. The methanol permeability of the Cr-SSP30 membrane is only 9.4×10-8 cm2/s. Although the proton conductivity of the crosslinked composite membranes is lower than that of SPVA/S- SPAEK composite membrane, this series of membranes show lower proton selectivity. The proton conductivity of Cr-SSP30 membrane is 0.034 S/cm at 25 ℃ and 0.065 S/cm at 80 ℃, which can meet the requirements of direct methanol fuel cell (DMFC), and expected to be applied in DMFC. © 2024 Sichuan University. All rights reserved.

引用

页码：147 / 156

页数：9

共 21 条

[1] Ranjeesh K C, Illathvalappil R, Veer S D, Et al., Imidazole-linked crystalline two- dimensional polymer with ultrahigh proton-conductivity, Journal of the American Chemical Society, 141, pp. 14950-14954, (2019)
[2] Peng J W, Fu X Z, Luo J L, Et al., Constructing novel cross-linked polybenzimidazole network for high- performance high-temperature proton exchange membrane, Journal of Membrane Science, 643, (2022)
[3] Prykhodko Y, Fatyeyeva K, Hespel L, Et al., Progress in hybrid composite Nafion®-based membranes for proton exchange fuel cell application, Chemical Engineering Journal, 409, (2021)
[4] Nederstedt H, Jannasch P., Poly(p- terphenyl alkylene)s grafted with highly acidic sulfonated polypentafluorostyrene side chains for proton exchange membranes, Journal of Membrane Science, 647, (2022)
[5] Cha J E, Jang S, Seo D J, Et al., A reinforced composite membrane of two- layered asymmetric structure with Nafion ionomer and polyethylene substrate for improving proton exchange membrane fuel cell performance, Chemical Engineering Journal, 454, (2023)
[6] Liu D, Xie Y, Zhong J, Et al., High methanol resistance semicrystalline sulfonated poly(ether ketone) proton exchange membrane for direct methanol fuel cell, Journal of Membrane Science, 650, (2022)
[7] Divya K, Rana D, Alwarappan B S, Et al., Custom-made sulfonated poly (ether sulfone) nanocomposite proton exchange ranes using exfoliated molybdenum disulfide nanosheets for DMFC applications, Polymer, 147, pp. 48-55, (2018)
[8] Kumar A G, Saha S, Kombe H, Et al., Trifluoromethyl and benzyl ether side groups containing novel sulfonated co-poly(ether imide) s: application in microbial fuel cell, European Polymer Journal, 118, pp. 451-464, (2019)
[9] Wei P, Sui Y, Li X, Et al., Sandwich-structure PI/SPEEK/PI proton exchange membrane developed for achieving the high durability on excellent proton conductivity and stability, Journal of Membrane Science, 644, (2022)
[10] Wang G, Li J L, Zhai L, Et al., Polyoxometalate- polymer nanocomposites with multiplex proton transport channels for high- performance proton exchange membranes, Composites Science and Technology, 232, (2023)

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