Determination of Reactivity Ratios for Acrylonitrile/Methyl Acrylate Radical Copolymerization Via Nonlinear Methodologies Using Real Time FTIR

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dc.contributor.authorWiles, Kenton Broyhillen
dc.contributor.committeechairMcGrath, James E.en
dc.contributor.committeecochairRiffle, Judy S.en
dc.contributor.committeememberShultz, Allan R.en
dc.contributor.departmentChemistryen
dc.date.accessioned2014-03-14T20:44:38Zen
dc.date.adate2002-09-11en
dc.date.available2014-03-14T20:44:38Zen
dc.date.issued2002-08-07en
dc.date.rdate2003-09-11en
dc.date.sdate2002-09-02en
dc.description.abstractReactivity ratios for the homogeneous free radical initiated copolymerization of acrylonitrile and methyl acrylate were measured by NMR on isolated, low conversion copolymers and by real time in situ FTIR. The system utilized azobisisobutyronitrile (AIBN) initiator in dimethyl formamide (DMF) at 62°. The FTIR technique allowed rapid generation of extensive copolymer compositions, which permitted application of nonlinear least squares methodology for the first time to this copolymer system. Thus, reactivity ratios at the 95% confidence level were determined to be 1.29 ± 0.2 and 0.96 ± 0.2 for acrylonitrile and methyl acrylate, respectively. The results are useful for the development of acrylonitrile (<90%) melt processable copolymer fibers and films, which could include precursors for carbon fibers.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-09022002-112751en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-09022002-112751/en
dc.identifier.urihttp://hdl.handle.net/10919/34888en
dc.publisherVirginia Techen
dc.relation.haspartEntireThesis.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectIn-situ FTIRen
dc.subjectNonlinear Analysisen
dc.subjectReactivity Ratiosen
dc.subjectMethyl Acrylateen
dc.subjectAcrylonitrileen
dc.titleDetermination of Reactivity Ratios for Acrylonitrile/Methyl Acrylate Radical Copolymerization Via Nonlinear Methodologies Using Real Time FTIRen
dc.typeThesisen
thesis.degree.disciplineChemistryen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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