dc.contributor.author | Bui, Tri Quang | |
dc.contributor.author | Cao, Vinh Duy | |
dc.contributor.author | Wang, Wei | |
dc.contributor.author | Kjøniksen, Anna-Lena | |
dc.date.accessioned | 2021-05-28T12:24:18Z | |
dc.date.available | 2021-05-28T12:24:18Z | |
dc.date.created | 2021-02-22T13:33:30Z | |
dc.date.issued | 2021 | |
dc.identifier.citation | Polymers. 2021, 13 (4), Artikkel 645. | en_US |
dc.identifier.issn | 2073-4360 | |
dc.identifier.uri | https://hdl.handle.net/11250/2756900 | |
dc.description.abstract | Hydrogels 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.iso | eng | en_US |
dc.publisher | MDPI | en_US |
dc.rights | Navngivelse 4.0 Internasjonal | * |
dc.rights.uri | http://creativecommons.org/licenses/by/4.0/deed.no | * |
dc.subject | hydrogel | en_US |
dc.subject | salinity gradient | en_US |
dc.subject | polyelectrolyte | en_US |
dc.subject | recovered energy | en_US |
dc.title | Recovered Energy from Salinity Gradients Utilizing Various Poly(Acrylic Acid)-Based Hydrogels | en_US |
dc.type | Peer reviewed | en_US |
dc.type | Journal article | en_US |
dc.description.version | publishedVersion | en_US |
dc.rights.holder | © 2021 by the authors. | en_US |
dc.subject.nsi | VDP::Teknologi: 500::Kjemisk teknologi: 560 | en_US |
dc.source.volume | 13 | en_US |
dc.source.journal | Polymers | en_US |
dc.source.issue | 4 | en_US |
dc.identifier.doi | 10.3390/polym13040645 | |
dc.identifier.cristin | 1892348 | |
dc.source.articlenumber | 645 | en_US |
cristin.ispublished | true | |
cristin.fulltext | original | |
cristin.qualitycode | 1 | |