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Proton conducting electrolytes composed of chondroitin sulfate polysaccharide and citric acid

2020Journal article Open access
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dc.contributor.authorSantos, Filipe M.
dc.contributor.authorBarbosa, Paula C.
dc.contributor.authorPereira, Rui F.P.
dc.contributor.authorSilva, M. Manuela
dc.contributor.authorGonçalves, Helena M R
dc.contributor.authorNunes, Sílvia C.
dc.contributor.authorFigueiredo, Filipe L.
dc.contributor.authorValente, Artur J.M.
dc.contributor.authorZea Bermudez, Verónica de
dc.date.accessioned2022-01-13T16:28:51Z
dc.date.available2022-01-13T16:28:51Z
dc.date.issued2020
dc.description.abstractNovel electrolytes composed of chondroitin sulfate A (CSA) and citric acid (CA) have been prepared using a clean, safe, and fast route. These electrolytes exhibit different physical-chemical properties, depending on the amount of CA. For X > 82.3%, where X is the mass ratio, in %, of CA/(CA + CSA), whitish polycrystalline powders result. Lower amounts of CA leads to the production of translucent, amorphous films, sticky for X = 75.6 and 82.0, brittle for X < 43.6 and crack-free, self-standing for 43.6 < X < 75.6%. The results obtained provide evidence that, at low pH, strong hydrogen bonding interactions take place between the anionic sulfonic and carboxylic groups of CSA and CA. CA exerts a key role, acting as a cross-linker and proton source, while simultaneously influencing sample morphology. At room temperature the highest ionic conductivity is achieved at X = 60.8%. A significant enhancement of the ionic conductivity of this sample occurs with the increase of relative humidity (RH) (from 3.1 × 10−7 to 3.7 × 10−2 S cm−1 30% for RH = 30 and ~100%, respectively).pt_PT
dc.description.sponsorshipSupport by Fundação para a Ciência e Tecnologia, I.P. (FCT) in the framework of the Strategic Funding UID/FIS/04650/2013, UID/QUI/ 00686/2013, UID/QUI/50006/2019 and UID/QUI/00686/2016. This work was funded by the R&D Project UniRCell-Unitised regenerative fuel cell for efficient renewable energy supply: from materials to device, with reference POCI-01-0145-FEDER-016422 and SAICTPAC/0032/ 2015, financed by the European Regional Development Fund (ERDF) through COMPETE 2020 – Operational Program for Competitiveness and Internationalization (POCI) and by the Foundation for Science and Technology (FCT) and CICECO-Aveiro Institute of Materials (UID/ CTM/50011/2019), financed by national funds through the FCT/MEC. Is also acknowledged, as well as funding under projects UID/CTM/ 50025/2013, Pest-OE/QUI/UI0616/2014, and LUMECD (PTDC/CTM/ NAN/0956/20149 and POCI-01-0145-FEDER-016884). F. M. Santos acknowledges a Post-PhD Fellow grant supported by Project UniRcell. P. C. Barbosa employment contract is funded by national funds (OE), through FCT – Fundação para a Ciência e a Tecnologia, I.P., in the scope of the framework contract foreseen in the numbers 4, 5 and 6 of the article 23, of the Decree-Law 57/2016, of August 29, changed by Law 57/2017, of July 19.R. F. P. Pereira Post-PhD fellow was funded by FCT (SFRH/BPD/87759/2012). S. C. Nunes was funded by FCT projects (Post-PhD Fellowships of UniRCell and LUMECD projects). H.M.R. Gonçalves was funded by NORTE-01-0145-FEDER-030858 and PTDC/ BTM-MAT/30858/2017.pt_PT
dc.description.versioninfo:eu-repo/semantics/publishedVersionpt_PT
dc.identifier.doi10.1016/j.eurpolymj.2019.109453pt_PT
dc.identifier.urihttp://hdl.handle.net/10400.22/19465
dc.language.isoengpt_PT
dc.peerreviewedyespt_PT
dc.publisherElsevierpt_PT
dc.relationUID/QUI/ 00686/2013pt_PT
dc.relationUID/QUI/00686/2016pt_PT
dc.relationAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
dc.relationSAICTPAC/0032/ 2015pt_PT
dc.relationUID/ CTM/50011/2019pt_PT
dc.relationUID/CTM/ 50025/2013pt_PT
dc.relationPTDC/CTM/ NAN/0956/20149pt_PT
dc.relationPOCI-01-0145-FEDER-01688pt_PT
dc.relationNORTE-01-0145-FEDER-030858pt_PT
dc.relationPTDC/ BTM-MAT/30858/2017pt_PT
dc.relation.publisherversionhttps://www.sciencedirect.com/science/article/abs/pii/S0014305719319056?via%3Dihubpt_PT
dc.rights.urihttp://creativecommons.org/licenses/by-nc-nd/4.0/pt_PT
dc.subjectChondroitin sulfatept_PT
dc.subjectBiopolymer electrolytespt_PT
dc.subjectIonic conductivitypt_PT
dc.subjectCitric acidpt_PT
dc.titleProton conducting electrolytes composed of chondroitin sulfate polysaccharide and citric acidpt_PT
dc.typejournal article
dspace.entity.typePublication
oaire.awardTitleAssociated Laboratory for Green Chemistry - Clean Technologies and Processes
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/UID%2FFIS%2F04650%2F2013/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/6817 - DCRRNI ID/UID%2FQUI%2F50006%2F2019/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/5876/PEst-OE%2FQUI%2FUI0616%2F2014/PT
oaire.awardURIinfo:eu-repo/grantAgreement/FCT/SFRH/SFRH%2FBPD%2F87759%2F2012/PT
oaire.citation.startPage109453pt_PT
oaire.citation.titleEuropean Polymer Journalpt_PT
oaire.citation.volume124pt_PT
oaire.fundingStream5876
oaire.fundingStream6817 - DCRRNI ID
oaire.fundingStream5876
oaire.fundingStreamSFRH
person.familyNameGonçalves
person.givenNameHelena
person.identifier.ciencia-id001B-0C41-0881
person.identifier.orcid0000-0001-6210-8736
person.identifier.ridAAC-5108-2020
person.identifier.scopus-author-id7003936551
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.identifierhttp://doi.org/10.13039/501100001871
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
project.funder.nameFundação para a Ciência e a Tecnologia
rcaap.rightsopenAccesspt_PT
rcaap.typearticlept_PT
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