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dc.contributor.authorBui, Tri Quang
dc.contributor.authorCao, Vinh Duy
dc.contributor.authorWang, Wei
dc.contributor.authorKjøniksen, Anna-Lena
dc.date.accessioned2021-05-28T12:24:18Z
dc.date.available2021-05-28T12:24:18Z
dc.date.created2021-02-22T13:33:30Z
dc.date.issued2021
dc.identifier.citationPolymers. 2021, 13 (4), Artikkel 645.en_US
dc.identifier.issn2073-4360
dc.identifier.urihttps://hdl.handle.net/11250/2756900
dc.description.abstractHydrogels can be utilized to extract energy from salinity gradients when river water mixes with seawater. Saline-sensitive hydrogels exhibit a reversible swelling/shrinking process when they are, alternately, exposed to fresh and saline water. We present a comparison of several poly(acrylic acid)-based hydrogels, including poly(acrylic acid) (PAA), poly(acrylic acid-co-vinylsulfonic acid) (PAA/PVSA), and poly(4-styrenessulfonic acid-co-maleic acid) interpenetrated in a poly(acrylic acid) network (PAA/PSSA-MA). The hydrogels were synthesized by free radical polymerization, copolymerization, and by semi-IPN (interpenetrating polymer network). The hydrogels were placed in a piston-like system to measure the recovered energy. Semi-IPN hydrogels exhibit a much higher recovered energy compared to the copolymer and PAA hydrogel. The recovered energy of 60 g swollen gel was up to 4 J for the PAA/PSSA-MA hydrogel. The obtained energy per gram dried gel was up to 13.3 J/g. The swelling volume of the hydrogels was maintained for 30 cycles without decline in recovered energy.en_US
dc.language.isoengen_US
dc.publisherMDPIen_US
dc.rightsNavngivelse 4.0 Internasjonal*
dc.rights.urihttp://creativecommons.org/licenses/by/4.0/deed.no*
dc.subjecthydrogelen_US
dc.subjectsalinity gradienten_US
dc.subjectpolyelectrolyteen_US
dc.subjectrecovered energyen_US
dc.titleRecovered Energy from Salinity Gradients Utilizing Various Poly(Acrylic Acid)-Based Hydrogelsen_US
dc.typePeer revieweden_US
dc.typeJournal articleen_US
dc.description.versionpublishedVersionen_US
dc.rights.holder© 2021 by the authors.en_US
dc.subject.nsiVDP::Teknologi: 500::Kjemisk teknologi: 560en_US
dc.source.volume13en_US
dc.source.journalPolymersen_US
dc.source.issue4en_US
dc.identifier.doi10.3390/polym13040645
dc.identifier.cristin1892348
dc.source.articlenumber645en_US
cristin.ispublishedtrue
cristin.fulltextoriginal
cristin.qualitycode1


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