Universality in gelation of epoxy acrylate with various photoinitiators: a photo differential scanning calorimetric study

dc.contributor.authorDoğruyol, Zekeriya
dc.contributor.authorKarasu, Feyza
dc.contributor.authorBalta, Demet Karaca
dc.contributor.authorArsu, Nergis
dc.contributor.authorPekcan, Önder
dc.date.accessioned2019-06-27T08:06:18Z
dc.date.available2019-06-27T08:06:18Z
dc.date.issued2008
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümüen_US
dc.description.abstractPhoto-differential scanning calorimetric (Photo-DSC) technique was used to study the gelation of P-3038 (epoxy acrylate (EA) 75% and tripropyleneglycoldiacrylate (TPGDA) 25%) in the presence of various thioxanthone-based initiators namely thioxanthone (TX) 5-thia-naphtacene-12-one (TX-NP) 2-(carboxymethoxy) thioxanthone (TX-OCH(2)COOH) 2-thioxanthone-thioacetic acid (TX-SCH(2)COOH) and 2-mercaptothioxanthone (TX-SH). Photopolymerization reactions were performed under identical conditions of temperature initiator concentration and UV light intensity. Photo-DSC technique allowed us to monitor the gelation without disturbing the system mechanically and to test the universality of the gelation as a function of some kinetic parameters like initiator concentration. During gelation it was observed that all conversion curves present a good sigmoidal behavior by predicting to employ percolation model. Observations around the glass transition point t(g) shows that the gel fraction exponents beta obeyed the percolation picture. On the other hand t(g) was found to be much higher for the crosslinked networks obtained with TX-OCH(2)COOH and TX-SCH(2)COOH initiators than those with the other initiators.en_US]
dc.identifier.citation10
dc.identifier.doi10.1080/01411590802136078en_US
dc.identifier.endpage947
dc.identifier.issn0141-1594en_US
dc.identifier.issn0141-1594
dc.identifier.issue10
dc.identifier.scopus2-s2.0-54249123312en_US
dc.identifier.scopusqualityN/A
dc.identifier.startpage935en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12469/1180
dc.identifier.urihttps://doi.org/10.1080/01411590802136078
dc.identifier.volume81en_US
dc.identifier.wosWOS:000259979800004en_US
dc.identifier.wosqualityN/A
dc.institutionauthorPekcan, Önderen_US
dc.language.isoenen_US
dc.publisherTaylor & Francis Ltden_US
dc.relation.journalPhase Transitionsen_US
dc.relation.publicationcategoryMakale - Uluslararası Hakemli Dergi - Kurum Öğretim Elemanıen_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectCritical exponenten_US
dc.subjectPhotoinitiatoren_US
dc.subjectEpoxy acrylateen_US
dc.subjectPhoto-DSCen_US
dc.subjectGlass transition pointen_US
dc.titleUniversality in gelation of epoxy acrylate with various photoinitiators: a photo differential scanning calorimetric studyen_US
dc.typeArticleen_US
dspace.entity.typePublication

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