Polymer Surface Modification With Plasma Reaction For Materials Integration

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dc.contributor.authorThurmond, Brian Victoren
dc.contributor.committeechairSaraf, Ravi F.en
dc.contributor.committeememberCox, David F.en
dc.contributor.committeememberDillard, David A.en
dc.contributor.departmentChemical Engineeringen
dc.date.accessioned2014-03-14T20:30:55Zen
dc.date.adate2002-01-23en
dc.date.available2014-03-14T20:30:55Zen
dc.date.issued2002-01-04en
dc.date.rdate2003-01-23en
dc.date.sdate2002-01-18en
dc.description.abstractSurface modification of polystyrene thin films was achieved using a plasma process with reactive gases to form functional groups. Advancing contact angles were measured after modification. Polystyrene surfaces were observed to reach a minimum average wetting contact angle of 7 degrees. The time required to achieve this contact angle decreased significantly by increasing the power of the discharge or by lowering the discharge source closer to the polymer substrate. Characterization studies of power, height, and corona exposure time versus contact angle led to the formation of surface energy gradients across the substrate. Photoluminescent tagging agents were used to quantify the degree of carboxyl modification achieved with water plasma and amine modification achieved with ammonia plasma. AMCA (7-amine-4-methyl coumarin hydrazide) was used to show that surface modification reaches a maximum functionalization before degradation of the polymer substrate occurs with water vapor. A parallel study with OPA (O-phthaldialdehyde) yielded similar results when ammonia was ionized over the surface. Additionally, stable surfaces were created by chemical reaction of zinc acetate with the freshly modified polymer. Zinc sulfide particles were formed within the polymer surface by reaction with hydrogen sulfide gas. Flourescence spectroscopy was used to verify the formation of zinc sulfide.en
dc.description.degreeMaster of Scienceen
dc.identifier.otheretd-01182002-134625en
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-01182002-134625/en
dc.identifier.urihttp://hdl.handle.net/10919/30984en
dc.publisherVirginia Techen
dc.relation.haspartThesisB.pdfen
dc.relation.haspartThesisA.pdfen
dc.relation.haspartVitae.pdfen
dc.rightsIn Copyrighten
dc.rights.urihttp://rightsstatements.org/vocab/InC/1.0/en
dc.subjectplasmaen
dc.subjectpolystyreneen
dc.subjectphotoluminescenceen
dc.titlePolymer Surface Modification With Plasma Reaction For Materials Integrationen
dc.typeThesisen
thesis.degree.disciplineChemical Engineeringen
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen
thesis.degree.levelmastersen
thesis.degree.nameMaster of Scienceen

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