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dc.contributor.authorKafouris, Demetrisen
dc.contributor.authorPatrickios, Costas S.en
dc.creatorKafouris, Demetrisen
dc.creatorPatrickios, Costas S.en
dc.date.accessioned2019-11-21T06:19:34Z
dc.date.available2019-11-21T06:19:34Z
dc.date.issued2009
dc.identifier.urihttp://gnosis.library.ucy.ac.cy/handle/7/55598
dc.description.abstractGroup transfer polymerization and sequential addition of monomer and cross-linker were employed for the preparation of two new polymer structures, one of a polymer network and the other of a star polymer. The synthesis was completed in two steps, involving the synthesis of linear methyl methacrylate (MMA) arms of degree of polymerization of 20, followed by their cross-linking using a mixture of MMA monomer and ethylene glycol dimethacrylate (EGDMA) cross-linker. In this study, the volume of the cross-linking mixture was varied systematically. Furthermore, two mixture compositions were employed, involving MMA:EGDMA molar ratios of 1:1 and 3:1, leading to two series of polymeric materials. It was found that at a given cross-linking mixture composition, a larger volume of the cross-linking mixture favored the formation of polymer networks, whereas a smaller volume favored the formation of star polymers. The linear precursors, the star polymers and the extractables from the polymer networks were characterized by gel permeation chromatography in tetrahydrofuran (THF). The absolute weight-average molecular weight, the number of arms and the hydrodynamic radii of the star polymers, as determined using static and dynamic light scattering in THF, respectively, and their average radii as determined by atomic force microscopy, increased as the volume of the cross-linking mixture increased. The gravimetrically measured degrees of swelling in THF, the network sol fraction and the percentage of branched polymer in the sol fraction decreased as the volume of the cross-linking mixture increased. © 2008 Elsevier Ltd. All rights reserved.en
dc.sourceEuropean Polymer Journalen
dc.source.urihttps://www.scopus.com/inward/record.uri?eid=2-s2.0-58149171934&doi=10.1016%2fj.eurpolymj.2008.09.014&partnerID=40&md5=7cc431c2925c37ad99c6222e0718b2e5
dc.subjectPolymersen
dc.subjectColloidsen
dc.subjectPolymerizationen
dc.subjectAtomic force microscopyen
dc.subjectMonomersen
dc.subjectEstersen
dc.subjectFluid dynamicsen
dc.subjectHydrodynamicsen
dc.subjectGelationen
dc.subjectChemical analysisen
dc.subjectChemical reactionsen
dc.subjectChromatographic analysisen
dc.subjectPolymer blendsen
dc.subjectAcrylic monomersen
dc.subjectHydrodynamic radiusen
dc.subjectMixturesen
dc.subjectEthyleneen
dc.subjectGlycolsen
dc.subjectGroup transfer polymerizationen
dc.subjectEthylene glycolen
dc.subjectMetropolitan area networksen
dc.subjectPhotoresistsen
dc.subjectSolsen
dc.subjectDegree of swellingen
dc.subjectPolymer networksen
dc.subjectStar polymersen
dc.subjectAFM radiusen
dc.titleSynthesis and characterization of shell-cross-linked polymer networks and large-core star polymers: Effect of the volume of the cross-linking mixtureen
dc.typeinfo:eu-repo/semantics/article
dc.identifier.doi10.1016/j.eurpolymj.2008.09.014
dc.description.volume45
dc.description.issue1
dc.description.startingpage10
dc.description.endingpage18
dc.author.faculty002 Σχολή Θετικών και Εφαρμοσμένων Επιστημών / Faculty of Pure and Applied Sciences
dc.author.departmentΤμήμα Χημείας / Department of Chemistry
dc.type.uhtypeArticleen
dc.description.notes<p>Cited By :10</p>en
dc.source.abbreviationEur Polym Jen
dc.contributor.orcidPatrickios, Costas S. [0000-0001-8855-0370]
dc.contributor.orcidKafouris, Demetris [0000-0002-8566-8960]
dc.gnosis.orcid0000-0001-8855-0370
dc.gnosis.orcid0000-0002-8566-8960


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