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Preparation and study on properties of functionalized polyhedral oligomeric silsesquioxane(POSS)/ polymer electrolyte composite HT-PEM

Authors： PANG Bohao, DUAN Yuting, ZHAO Chengji

Units： College of Chemistry, Jilin University, Changchun 130012, China

KeyWords： proton exchange membrane; poly(aryl ether ketone); polyhedral oligomeric silsesquioxane; organic-inorganic hybrid

ClassificationCode：

year,volume(issue):pagination： 2023,43(1):83-90

Abstract：

Abstract: The amount of phosphoric acid doping is crucial to the performance of phosphoric acid doped high temperature proton exchange membrane (HT-PEM). In order to increase the doping amount of phosphoric acid and thus improving the proton conducting performance of poly(aryl ether ketone) (PAEK)-based composite membranes while ensuring sufficient mechanical property, a kind of phosphoric acid doped functionalized POSS/PAEK hybrid membranes was developed. First, quater22179047octa(aminophenyl)-POSS (QOAPS) was blended with bromomethylated PAEK (Br-PAEK) polymer. Second, trimethylamine was used as quaternized reagent to prepare quaternized PAEK containing QOAPS (QPAEK@QOAPS). Finally, phosphoric acid was doped into the membrane (PA-QPAEK@QOAPS). The effects of QOAPS content on the PA doping and membrane performance were investigated. It was found that when the doing amount of QOAPS in the blended membrane was 10 wt%, compared with the original membrane, the phosphoric acid doping level of QPAEK@QOAPS membranes could be increased by 31% and the proton conductivity was increased by 56% at 180 ℃, while the membrane still maintained good mechanical strength.

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AuthorIntro：

庞博昊（1999-），男，天津，本科，研究方向为高分子材料，E-mail:1226070340@qq.com.

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