Please use this identifier to cite or link to this item:
https://hdl.handle.net/10316/91172
DC Field | Value | Language |
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dc.contributor.author | Santos, Filipe M. | - |
dc.contributor.author | Barbosa, Paula C. | - |
dc.contributor.author | Pereira, Rui F. P. | - |
dc.contributor.author | Silva, M. Manuela | - |
dc.contributor.author | Gonçalves, Helena M. R. | - |
dc.contributor.author | Nunes, Sílvia C. | - |
dc.contributor.author | Figueiredo, Filipe L. | - |
dc.contributor.author | Valente, Artur J. M. | - |
dc.contributor.author | Bermudez, Verónica de Zea | - |
dc.date.accessioned | 2020-10-10T19:04:22Z | - |
dc.date.available | 2020-10-10T19:04:22Z | - |
dc.date.issued | 2020-02-05 | - |
dc.identifier.issn | 00143057 | pt |
dc.identifier.uri | https://hdl.handle.net/10316/91172 | - |
dc.description.abstract | Novel 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 |
dc.language.iso | eng | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/UID/FIS/04650/2013 | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/UID/QUI/00686/2013 | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/UID/QUI/50006/2019 | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/UID/QUI/00686/2016 | pt |
dc.relation | info:eu-repo/grantAgreement/POCI-01-0145-FEDER-016422 | pt |
dc.relation | info:eu-repo/grantAgreement/SAICTPAC/0032/2015 | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/UID/CTM/50011/2019) | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/UID/CTM/50025/2013 | pt |
dc.relation | info:eu-repo/grantAgreement/Pest-OE/QUI/UI0616/2014 | pt |
dc.relation | info:eu-repo/grantAgreement/PTDC/CTM/NAN/0956/20149 | pt |
dc.relation | info:eu-repo/grantAgreement/POCI-01-0145-FEDER-016884 | pt |
dc.relation | info:eu-repo/grantAgreement/FCT/SFRH/BPD/87759/2012 | pt |
dc.relation | info:eu-repo/grantAgreement/NORTE-01-0145-FEDER-030858 | pt |
dc.relation | info:eu-repo/grantAgreement/PTDC/BTM-MAT/30858/2017 | pt |
dc.rights | embargoedAccess | pt |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/ | pt |
dc.subject | Chondroitin sulfate | pt |
dc.subject | Biopolymer electrolytesIonic conductivity | pt |
dc.subject | Citric acid | pt |
dc.title | Proton conducting electrolytes composed of chondroitin sulfate polysaccharide and citric acid | pt |
dc.type | article | - |
degois.publication.title | European Polymer Journal | pt |
dc.relation.publisherversion | https://www.sciencedirect.com/science/article/abs/pii/S0014305719319056 | pt |
dc.peerreviewed | yes | pt |
dc.identifier.doi | 10.1016/j.eurpolymj.2019.109453 | pt |
degois.publication.volume | 124 | pt |
dc.date.embargo | 2021-02-04 | * |
uc.date.periodoEmbargo | 365 | pt |
item.fulltext | Com Texto completo | - |
item.openairecristype | http://purl.org/coar/resource_type/c_18cf | - |
item.grantfulltext | open | - |
item.languageiso639-1 | en | - |
item.openairetype | article | - |
item.cerifentitytype | Publications | - |
crisitem.author.researchunit | CQC - Coimbra Chemistry Centre | - |
crisitem.author.parentresearchunit | Faculty of Sciences and Technology | - |
crisitem.author.orcid | 0000-0001-7279-5728 | - |
crisitem.author.orcid | 0000-0002-4612-7686 | - |
Appears in Collections: | I&D CQC - Artigos em Revistas Internacionais |
Files in This Item:
File | Description | Size | Format | |
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EPJ2020.pdf | 3.4 MB | Adobe PDF | View/Open |
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