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The paper studied bio-inspired, anisotropic proton exchange membranes made from block copolymers prepared by self-assembly. The authors synthesized sulfonated poly(pentafluorostyrene) (sPPFS) as the proton-conducting block and paired it with hydrophobic, biomass-derived poly(terpen acrylate) blocks (using either cyclic thymyl acrylate or linear tetrahydrogeraniol acrylate), then tailored block glass transition temperatures, composition (varying PFS content), and optional addition of an ionic crosslinker (PBI) to assess effects on film formation, morphology, mechanical strength, water uptake, and conductivity; they used NMP for block synthesis followed by post-introduction of sulfonated groups. A key finding was that exploiting immiscibility between blocks enabled segregated anisotropic nano-channels that improved through-plane proton conductivity, and they reported membranes with up to 50 wt% renewable bio-sourced carbon and only 15 wt% fluorine while retaining features of benchmark isotropic perfluorinated membranes. The authors also explicitly note the work is a preprint and not peer reviewed, implying findings are preliminary. The paper does not explicitly discuss endometriosis or adenomyosis; it was included in the corpus via a keyword match in the upstream search index.
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Sustainable Bio-Inspired Anisotropic Proton Exchange Membranes by Self-Assembly of Bio-Based Solid Polymer Electrolytes | Authorea try { document.documentElement.classList.add('js'); } catch (e) { } var _gaq = _gaq || []; _gaq.push(['_setAccount', 'G-8VDV14Y67G']); _gaq.push(['_trackPageview']); (function() { var ga = document.createElement('script'); ga.type = 'text/javascript'; ga.async = true; ga.src = ('https:' == document.location.protocol ? 'https://ssl' : 'http://www') + '.google-analytics.com/ga.js'; var s = document.getElementsByTagName('script')[0]; s.parentNode.insertBefore(ga, s); })(); Skip to main content Preprints Collections Wiley Open Research IET Open Research Ecological Society of Japan All Collections About About Authorea FAQs Contact Us Quick Search anywhere Search for preprint articles, keywords, etc. Search Search ADVANCED SEARCH SCROLL This is a preprint and has not been peer reviewed. Data may be preliminary. 27 March 2026 V1 Latest version Share on Sustainable Bio-Inspired Anisotropic Proton Exchange Membranes by Self-Assembly of Bio-Based Solid Polymer Electrolytes Authors : Antoine Aynard , Emilie Planes , and BILLON Laurent 0000-0003-0999-899X [email protected] Authors Info & Affiliations https://doi.org/10.22541/au.177463477.74338691/v1 128 views 69 downloads Contents Abstract Supplementary Material Information & Authors Metrics & Citations View Options References Figures Tables Media Share Abstract A new class of bio-inspired polymer membranes was elaborated using block copolymers BCP self-assembly. The BCPs are based on a proton conductive block, i.e. sulfonated poly pentafluorostyrene (sPPFS), paired with a highly hydrophobic monomers derived from biomass, i.e. terpen acrylate. With either cyclic ThymylAcrylate TA or linear TetraHydroGeraniolAcrylate THGA, both blocks with high or low glass transition temperatures Tg values were tailored and evaluated for film formation. PTA-b-PPFS or (PTA-s-PTHGA)-b-PFFS copolymers were first synthesized via nitroxide-mediated polymerization NMP, followed by a post-introduction of sulfonated groups through para fluoro/thiol reaction to introduce the ionic groups. The copolymer composition, i.e. various PFS contents, as well as the addition of an ionic crosslinker PBI influence the membrane morphologies and properties, i.e. mechanical strength, water uptake or conductivity. The immiscibility between the sPPFS and PolyTerpenAcrylates blocks was used as advantage to generate anisotropic segregated domains by creating bio-inspired nano-channels for proton conduction to further boost the through-plane membrane conductivity. Herein, using the bio-inspired strategy, more sustainable anisotropic membranes with up to 50 wt% of renewable bio-sourced carbon and only 15 wt% of Fluorine were tailored with similar features of benchmarked isotropic perfluorinated membranes. Supplementary Material File (eem bio-based spe pem march 2026.docx) Download 6.27 MB Information & Authors Information Version history V1 Version 1 27 March 2026 Copyright This work is licensed under a Non Exclusive No Reuse License. Keywords biomimicry block copolymer self-assembly proton exchange membrane sustainability Authors Affiliations Antoine Aynard IPREM View all articles by this author Emilie Planes LEPMI Genese & Usages des Interfaces Durables pour l'Energie View all articles by this author BILLON Laurent 0000-0003-0999-899X [email protected] IPREM View all articles by this author Metrics & Citations Metrics Article Usage 128 views 69 downloads .FvxKWukQNSOunydq8rnd { width: 100px; } Citations Download citation Antoine Aynard, Emilie Planes, BILLON Laurent. Sustainable Bio-Inspired Anisotropic Proton Exchange Membranes by Self-Assembly of Bio-Based Solid Polymer Electrolytes. Authorea . 27 March 2026. DOI: https://doi.org/10.22541/au.177463477.74338691/v1 If you have the appropriate software installed, you can download article citation data to the citation manager of your choice. Simply select your manager software from the list below and click Download. 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