膜科学与技术

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Study on cross-linked homogeneous anion exchange membrane based on sodium acrylate and vinylamine

Authors： Fu Jiawen, Hao Miaoli, Kang Zhuo, He Xinping, Lu Qianqian ,Yi Chunhai

Units： 1 Department of Chemical Engineering, Xi’an Jiaotong University, Xi’an 710049, China 2 China Petroleum Pipeline Engineering Co. Ltd, Langfang 065000, China

KeyWords： anion exchange membrane; acrylic acid vinyl amine; fuel cell; methanol permeability

ClassificationCode：TQ028.8

year,volume(issue):pagination： 2023,43(3):8-14

Abstract：

Carboxylate based polyelectrolyte is an important membrane material. In this work, a series of cross-linked alkaline polyelectrolyte membranes were synthesized from alkali neutralized acrylic acid (AA) and N-vinylformamide (NVF). Based on the characteristic that carboxylate radical dissociation in alkaline polyelectrolyte can produce OH-, the corresponding homogeneous anion exchange membrane was prepared by solution tape casting method. The ion exchange membrane was characterized by FTIR, thermogravimetry, water content and water swelling degree testing. The effects of composition and cross-linking degree on ionic conductivity as well as methanol permeability were studied. At room temperature, when the monomer mass ratio AA/NVF is 1:1 and the crosslinking agent glutaraldehyde (GA) content is 0.1 wt%, the conductivity of the ion exchange membrane can reach 3.2 mS/cm, and the methanol transmission coefficient is 9.6×10-8 cm2/s. It shows that it has the potential for application in direct methanol fuel cell (DMFCs).

Funds：

国家自然科学基金项目（22208257）资助

AuthorIntro：

付佳雯（1995-），女，重庆人，学生，博士，本科，从事渗透汽化脱盐材料的制备与应用，E-mail：fjw1021@foxmail.com

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