The effects of crosslinker ratio and photoinitiator type on the properties of pnipam hydrogel

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dc.authoridBasal, Guldemet/0000-0003-4622-802X
dc.authorscopusid58028346300
dc.authorscopusid14053416400
dc.contributor.authorOral, Nur
dc.contributor.authorBasal, Guldemet
dc.date.accessioned2024-08-25T18:38:29Z
dc.date.available2024-08-25T18:38:29Z
dc.date.issued2023
dc.departmentEge Üniversitesien_US
dc.description.abstractIn this study, Poly(N-isopropylacrylamide) (PNIPAM) hydrogels were produced from N-isopropylacrylamide (NIPAM), at three different concentrations of crosslinker, N,N & PRIME;-methylenebisacrylamide (BIS) (0.50%, 0.35%, and 0.25%) using two types of photoinitiator, a hydrophilic photoinitiator (Irgacure 2959) and a hydrophobic photoinitiator (Irgacure 651). When Irgacure 651 was used photopolymerization process was completed in 20 min compared to two hours with Irgacure 2959. However, the resultant hydrogels were opaque suggesting a heterogeneous structure, which in turn led to low compressive strength. Besides, when hydrogel solution was prepared with Irgacure 651 in water/ethanol mixture 0.25% crosslinker ratio was not sufficient to form a hydrogel. Irgacure 2959 produced homogenous transparent hydrogels with a higher degree of swelling. When the crosslinker ratio decreased swelling capacity increased, but hydrogels became weaker. The decrease in compressive strength was particularly high at the 0.25% crosslinker ratio. The crosslinker ratio or photoinitiator type did not have any significant effect on the phase transition temperature. On the other hand, hydrogel samples prepared with Irgacure 651 in water/ethanol mixture showed a quicker response to swelling and deswelling. In conclusion, in terms of morphology, swelling capacity, and compressive strength the best results were obtained with the crosslinker ratio of 0.35% and Irgacure 2959.en_US
dc.description.sponsorshipScientific and Technological Research Council of Turkey (TUBITAK) [119M355]en_US
dc.description.sponsorshipThe authors would like to express appreciation for the support of the Scientific and Technological Research Council of Turkey (TUBITAK) [Project Number =119M355].en_US
dc.identifier.doi10.1007/s10965-022-03419-2
dc.identifier.issn1022-9760
dc.identifier.issn1572-8935
dc.identifier.issue1en_US
dc.identifier.scopus2-s2.0-85144602769en_US
dc.identifier.scopusqualityQ2en_US
dc.identifier.urihttps://doi.org/10.1007/s10965-022-03419-2
dc.identifier.urihttps://hdl.handle.net/11454/101031
dc.identifier.volume30en_US
dc.identifier.wosWOS:000903606300002en_US
dc.identifier.wosqualityQ3en_US
dc.indekslendigikaynakWeb of Scienceen_US
dc.indekslendigikaynakScopusen_US
dc.language.isoenen_US
dc.publisherSpringeren_US
dc.relation.ispartofJournal of Polymer Researchen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/closedAccessen_US
dc.snmz20240825_Gen_US
dc.subjectPoly(N-isopropylacrylamide)en_US
dc.subjectPhotopolymerizationen_US
dc.subjectCrosslinker ratioen_US
dc.subjectPhotoinitiator typeen_US
dc.subjectMorphologyen_US
dc.subjectSwelling behavioren_US
dc.subjectCompressive strengthen_US
dc.subjectPoly(N-Isopropylacrylamide)en_US
dc.subjectPolymersen_US
dc.titleThe effects of crosslinker ratio and photoinitiator type on the properties of pnipam hydrogelen_US
dc.typeArticleen_US

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