Structure-property relationships in novel ionomers

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dc.contributor.authorLoveday, Donald Rayen
dc.contributor.committeechairWilkes, Garth L.en
dc.contributor.committeememberDavis, Richey M.en
dc.contributor.committeememberMarand, Hervé L.en
dc.contributor.committeememberGibson, Harry W.en
dc.contributor.committeememberMcGrath, James E.en
dc.contributor.departmentChemical Engineeringen
dc.date.accessioned2014-03-14T21:19:22Zen
dc.date.adate2007-10-02en
dc.date.available2014-03-14T21:19:22Zen
dc.date.issued1994-08-29en
dc.date.rdate2007-10-02en
dc.date.sdate2007-10-02en
dc.description.abstractIt is observed for the first time that telechelic ionomers based on sulfonated polyisobutylene exhibit primary and secondary SAXS peaks when the molecular weight distribution is narrow (Mw/Mn ca. 1.15). These SAXS peaks are interpreted as due to non-global lamellar or cylindrical ionic domain order. The non-global ordering strongly affects the tensile and dynamic mechanical properties of the ionomer. This effect is attributed to local ionic phase continuity and the concept of restriction of chain motion by the ionic domain. Triblock copolymer ionomers from t-butyl methacrylate (tBMA) end blocks and polybutadiene or tapered poly(styrenelbutadienel styrene) (tSBS) mid blocks exhibit complex SAXS patterns indicating dispersed spheroidal ionic end block domains in the matrix. TEM shows that ionization of the 9 mol % PtBMA-PBD triblock produces a morphological transformation from unoriented rodlike domains to ionic spheroids.en
dc.description.degreePh. D.en
dc.format.extentxxii, 345 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-10022007-144854en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-10022007-144854/en
dc.identifier.urihttp://hdl.handle.net/10919/39502en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V856_1994.L684.pdfen
dc.relation.isformatofOCLC# 32829636en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V856 1994.L684en
dc.subject.lcshIonomersen
dc.titleStructure-property relationships in novel ionomersen
dc.typeDissertationen
dc.type.dcmitypeTexten
thesis.degree.disciplineChemical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.leveldoctoralen
thesis.degree.namePh. D.en

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