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Synthesis of poly(arylene ether sulfone)-polyimide segmented copolymers

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dc.contributor.authorWilkens, Diana L.en
dc.contributor.departmentChemistryen
dc.date.accessioned2014-03-14T21:31:38Zen
dc.date.adate2009-03-14en
dc.date.available2014-03-14T21:31:38Zen
dc.date.issued1990en
dc.date.rdate2009-03-14en
dc.date.sdate2009-03-14en
dc.description.abstractPoly(arylene ether sulfone) oligomers have been synthesized by nucleophilic aromatic substitution using potassium carbonate as base and N-methyl pyrrolidinone (NMP) as solvent. m-Aminophenol was used as an endcapper to control the molecular weight of the oligomers and to provide functional amine termination. These amine terminated oligomers can then be utilized in a variety of post reactions. Poly(arylene ether sulfone)-Polyimide segmented copolymers were synthesized using a solution imidization procedure with NMP as the solvent and o-dichlorobenzene as the azeotroping agent. The polysulfone oligomers were reacted into the system via the diamine oligomer. The segmented copolymers demonstrated good solubility characteristics, high thermal stability, and high glass transition temperatures. Previously, polyimides containing pyromellitic dianhydride (PMDA) did not remain soluble in the NMP solvent during the solution imidization, but rather precipitated out of solution when partially imidized. Incorporation of the amine terminated polysulfone oligomers into PMDA containing copolymers resulted in Systems that remained soluble even after completion of imidization. The resulting copolymers were completely soluble in many of the high boiling solvents. The copolymers demonstrated high thermal Stability and high glass transition temperatures.en
dc.description.degreeMaster of Scienceen
dc.format.extentx, 95 leavesen
dc.format.mediumBTDen
dc.format.mimetypeapplication/pdfen
dc.identifier.otheretd-03142009-040436en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-03142009-040436/en
dc.identifier.urihttp://hdl.handle.net/10919/41592en
dc.language.isoenen
dc.publisherVirginia Techen
dc.relation.haspartLD5655.V855_1990.W552.pdfen
dc.relation.isformatofOCLC# 24112593en
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subject.lccLD5655.V855 1990.W552en
dc.subject.lcshPolyimides -- Researchen
dc.subject.lcshThermoplastics -- Researchen
dc.titleSynthesis of poly(arylene ether sulfone)-polyimide segmented copolymersen
dc.typeThesisen
dc.type.dcmitypeTexten
thesis.degree.disciplineChemistryen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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