Please use this identifier to cite or link to this item: https://hdl.handle.net/1959.11/11521
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dc.contributor.authorFormer, Cen
dc.contributor.authorCastro, Jen
dc.contributor.authorFellows, Christopheren
dc.contributor.authorTanner, RIen
dc.contributor.authorGilbert, RGen
dc.date.accessioned2012-10-23T15:51:00Z-
dc.date.issued2002-
dc.identifier.citationJournal of Polymer Science. Part A, Polymer Chemistry, 40(20), p. 3335-3349en
dc.identifier.issn1099-0518en
dc.identifier.issn0887-624Xen
dc.identifier.urihttps://hdl.handle.net/1959.11/11521-
dc.description.abstractA series of poly(butyl acrylate) samples were prepared by emulsion polymerization with a range of molecular weights and degrees of chain branching. Characterization was performed with NMR (giving the fraction of branching, ranging from approximately 0 to 7%), gel permeation chromatography, viscometry, and determination of the gel fraction. The dynamic mechanical response, that is, the frequency dependence of the storage and loss moduli G'(w) and G"(w) was measured from 0.02 to 200 Hz. The occurrence of a significant insoluble fraction in the sample meant that full characterization of the molecular weight distribution was not possible, and so an unambiguous separation of the dependencies of the mechanical response on the degree of long-chain branching (LCB) and short-chain branching (SCB) and the molecular weight could not be made; however, trends dependent on the molecular weight alone were insufficient to model the results. At high frequencies, all trends in G'(w) and G"(w) could be ascribed to molecular weight dependencies; at low frequencies, the effects of both the molecular weight and total degree of branching could be inferred, with more highly branched samples showing lower storage and loss moduli. Although the relative amounts of SCB and LCB could not be determined, no dynamic features attributable to LCB were observed. The low-frequency trends could be semiquantitatively fitted with reptation and retraction theory if it was assumed that an increased degree of SCB led to an increased tube size.en
dc.languageenen
dc.publisherJohn Wiley & Sons, Incen
dc.relation.ispartofJournal of Polymer Science. Part A, Polymer Chemistryen
dc.titleEffect of Branching and Molecular Weight on the Viscoelastic Properties of Poly(butyl acrylate)en
dc.typeJournal Articleen
dc.identifier.doi10.1002/pola.10424en
dc.subject.keywordsChemical Characterisation of Materialsen
dc.subject.keywordsPolymerisation Mechanismsen
local.contributor.firstnameCen
local.contributor.firstnameJen
local.contributor.firstnameChristopheren
local.contributor.firstnameRIen
local.contributor.firstnameRGen
local.subject.for2008030301 Chemical Characterisation of Materialsen
local.subject.for2008030305 Polymerisation Mechanismsen
local.subject.seo2008860608 Rubber and Synthetic Resinsen
local.profile.schoolSchool of Science and Technologyen
local.profile.emailcfellows@une.edu.auen
local.output.categoryC1en
local.record.placeauen
local.record.institutionUniversity of New Englanden
local.identifier.epublicationsrecordpes:7155en
local.publisher.placeUnited States of Americaen
local.format.startpage3335en
local.format.endpage3349en
local.identifier.scopusid0037108337en
local.peerreviewedYesen
local.identifier.volume40en
local.identifier.issue20en
local.contributor.lastnameFormeren
local.contributor.lastnameCastroen
local.contributor.lastnameFellowsen
local.contributor.lastnameTanneren
local.contributor.lastnameGilberten
dc.identifier.staffune-id:cfellowsen
local.profile.orcid0000-0002-8976-8651en
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.profile.roleauthoren
local.identifier.unepublicationidune:11720en
dc.identifier.academiclevelAcademicen
local.title.maintitleEffect of Branching and Molecular Weight on the Viscoelastic Properties of Poly(butyl acrylate)en
local.output.categorydescriptionC1 Refereed Article in a Scholarly Journalen
local.search.authorFormer, Cen
local.search.authorCastro, Jen
local.search.authorFellows, Christopheren
local.search.authorTanner, RIen
local.search.authorGilbert, RGen
local.uneassociationUnknownen
local.year.published2002en
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