Robust Yet Conductive Blend Anion Exchange Membranes for Hydrogen Production via PPO Reinforcement of Highly Functionalized Styrene–Butadiene-Based Ionomers
Rattachement africain : it. Niveau de preuve : code pays fourni par la source.
Le résumé fourni par la source
Herein, vinylbenzyl chloride (VBC)-grafted styrene-butadiene (SB) copolymers, with high contents of VBC (22–32 mol%), were synthesized and blended with low amounts (n = 3–10 wt%) of unfunctionalized poly(phenylene oxide) (PPO). Being well-known for its great chemical compatibility with polystyrene, PPO was selected as non-conductive, hydrophobic and mechanically robust component to be blended with graft copolymers in order to reduce their water uptake, thus improving their dimensional and mechanical stability after quaternization with trimethylamine. The resulting blend membranes were characterized in terms of thermal, mechanical, and ex situ electrochemical properties. Blend membranes generally presented improved mechanical properties, as well as reduced water uptake with respect to AEMs not containing PPO, while retaining ion conductivity values of 11.3–16.6 mS cm−1, higher than that of a commercial hydrocarbon-based benchmark. Among the investigated blend AEMs, g-VBC-32/PPOn membranes were found to have the highest conductivity values (>15 mS cm−1) and the best trade-off between water uptake, mechanical properties and hydrogen permeability. Overall, these results highlight pristine PPO blending as a cost-effective, simple and scalable route to improve the mechanical and dimensional stability of hydrocarbon-based AEMs.
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Le contrôle bibliographique ouvert
DOI retrouvé dans Crossref DOI retrouvé ; titre concordant.
- Titre Crossref
- Robust Yet Conductive Blend Anion Exchange Membranes for Hydrogen Production via PPO Reinforcement of Highly Functionalized Styrene–Butadiene-Based Ionomers
- Date Crossref
- 02/09/2026
- Éditeur
- MDPI AG
- Type
- journal-article
Ce recoupement confirme des métadonnées liées au DOI. Il ne confirme ni la méthode ni les conclusions de l’étude, et il ne compte pas comme une seconde source scientifique indépendante.
Où se fait cette recherche
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University of Pisa Department of Chemistry and Industrial Chemistry pays non établi dans la noticeUniversité ou école supérieure
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National Interuniversity Consortium of Materials Science and Technology pays non établi dans la noticeUniversité ou école supérieure
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Enapter (Italy) pays non établi dans la noticeEntreprise
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Consorzio Interuniversitario Nazionale per la Scienza e Tecnologia dei Materiali (INSTM) pays non établi dans la noticeInstitution
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Enapter s.r.l. pays non établi dans la noticeInstitution
Department of Chemistry and Industrial Chemistry — University of Pisa, National Interuniversity Consortium of Materials Science and Technology et Enapter (Italy), avec 2 autres affiliations.
Une affiliation ne permet pas de déduire la nationalité d’un auteur.