Critical phenomenon during photoinitiated gelation at different temperatures: A Photo-DSC study

dc.contributor.authorPekcan, Mehmet Önder
dc.contributor.authorArsu, Nergis
dc.contributor.authorDogruyol, Sevnur Keskin
dc.contributor.authorPekcan, Önder
dc.date.accessioned2019-06-27T08:04:35Z
dc.date.available2019-06-27T08:04:35Z
dc.date.issued2011
dc.departmentFakülteler, Mühendislik ve Doğa Bilimleri Fakültesi, Biyoinformatik ve Genetik Bölümüen_US
dc.description.abstractThe behaviour of photoinitiated radical polymerization of an 80 wt% epoxy diacrylate (EA) and 20 wt% tripropyleneglycoldiacrylate (TPGDA) mixture with 2-mercaptothioxanthone (TX-SH) photoinitiator was studied at different temperatures by using photo-differential scanning calorimetric (Photo-DSC) technique. All photopolymerization reactions were carried out under the same conditions. It was observed that all conversion curves during gelation at different temperatures present nice sigmoidal behaviour which suggests the application of the percolation model. Observations around the critical time called the glass transition point (t(g)) taken to reach the maximum rate of polymerization (Rp(max)) show that the gel fraction exponent (beta) obeyed the percolation model. The produced beta values were found to be around 0.50 predicting that the system under consideration belongs to the same universality class. However. Rp(max) and the final conversion (C(s)) values were found to increase when the temperature was increased up to a certain value. On the other hand t(g) values decreased and became saturated as the temperature was increased. (C) 2011 Elsevier B.V. All rights reserved.en_US]
dc.identifier.citation6
dc.identifier.doi10.1016/j.porgcoat.2011.08.008en_US
dc.identifier.endpage768
dc.identifier.issn0300-9440en_US
dc.identifier.issn0300-9440
dc.identifier.issue4
dc.identifier.scopus2-s2.0-80054940943en_US
dc.identifier.scopusqualityQ1
dc.identifier.startpage763en_US
dc.identifier.urihttps://hdl.handle.net/20.500.12469/961
dc.identifier.urihttps://doi.org/10.1016/j.porgcoat.2011.08.008
dc.identifier.volume72en_US
dc.identifier.wosWOS:000297454900021en_US
dc.identifier.wosqualityQ1
dc.institutionauthorPekcan, Önderen_US
dc.language.isoenen_US
dc.publisherElsevier Scienceen_US
dc.relation.journalProgress in Organic Coatingsen_US
dc.relation.publicationcategoryDiğeren_US
dc.rightsinfo:eu-repo/semantics/openAccessen_US
dc.subjectPercolationen_US
dc.subjectTemperatureen_US
dc.subjectEpoxy acrylateen_US
dc.subjectPhoto-DSCen_US
dc.subjectCritical exponenten_US
dc.titleCritical phenomenon during photoinitiated gelation at different temperatures: A Photo-DSC studyen_US
dc.typeReviewen_US
dspace.entity.typePublication
relation.isAuthorOfPublicatione5459272-ce6e-44cf-a186-293850946f24
relation.isAuthorOfPublication.latestForDiscoverye5459272-ce6e-44cf-a186-293850946f24

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