在磷酸化聚乙烯醇（P-PVA）水溶液中引发丙烯腈（AN）和丙烯酸（AA）乳液聚合，生成丙烯腈和丙烯酸共聚物乳胶粒。将得到的聚合物乳液流延成膜，经热处理后得到一种新型的质子交换膜，简称PAA膜。对PAA膜的性能进行测试和表征。扫描电镜结果显示，PAA膜内具有聚合物胶体粒子密堆积的微观结构。红外光谱结果表明，磷酸分子已接枝到聚乙烯醇的链段上，且热处理后P-PVA与聚丙烯酸之间发生了交联反应。电导率的测定结果表明，随着聚乙烯醇磷酸化程度的提高，质子膜的电导率随之增大，160 ℃时电导率最高，为1.18×10^-4 S/cm。研究表明，这种同时具有质子给体和质子受体微观两相结构的膜内形成了不依赖液体水即可进行质子传输的通道。

The emulsion copolymerization of acrylonitrile (AN) and acrylic acid (AA) was initiated in phosphorylated polyvinyl alcohol (P-PVA) aqueous solution to generate copolymer latex particles of AN and AA. The obtained polymer emulsion is cast into a film, and after heat treatment, a new type of proton exchange membrane is obtained, referred to as the PAA membrane. The performance of the PAA membrane is tested and characterized. Scanning electron microscopy results showed that the PAA membrane had a microstructure of dense accumulation of polymer colloidal particles. The results of infrared spectra indicated that the phosphoric acid molecules had been grafted onto the chain segments of the poly(vinyl alcohol), and a crosslinking reaction occurred between P-PVA and polyacrylic acid after heat treatment. The conductivity measurements showed that as the degree of phosphorylation of poly(vinyl alcohol) increased, the proton conductivity of the membrane also increased, with a maximum of 1.18×10^-4 S/cm at 160 ℃. The study indicated that a proton transport channel was formed in the membrane, which had a microscopic two-phase structure of proton donor and proton acceptor, without relying on liquid water.