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dc.contributor.authorMartin, Julie Patriciaen_US
dc.date.accessioned2014-03-14T20:19:18Z
dc.date.available2014-03-14T20:19:18Z
dc.date.issued2001-11-14en_US
dc.identifier.otheretd-11292001-141959en_US
dc.identifier.urihttp://hdl.handle.net/10919/29773
dc.description.abstractThis work investigates processing-microstructure-property relationships of a model cryogenically mechanically alloyed polymer-polymer system: polycarbonate (PC) and poly (ether ether ketone) (PEEK). Mechanically milled and alloyed powders were characterized using a variety of techniques including microscopy and thermal analysis. Cryogenically mechanically alloyed powders processed for 10 hours were shown to have a sub-micron level two-phase microstructure. These powders were processed into testable coupons using a mini ram-injection molder; microstructure and bulk mechanical properties of the coupons were investigated as a function of mechanical alloying and injection molding parameters. Atomic force microscopy, transmission electron microscopy, and scanning transmission X-ray microscopy revealed that the intimate blending achieved during the mechanical alloying process is not retained upon post-processing using a conventional polymer processing technique. Injection molded coupons were tested in 3-point bend mode via dynamic mechanical and quasi-static mechanical testing. Results demonstrated that no improvement in energy to break, strain at failure, or failure strength was achieved in coupons made from cryogenically mechanically alloyed powders compared to those of coupons made from non-mechanically alloyed samples.en_US
dc.publisherVirginia Techen_US
dc.relation.haspartJPM_Dissertation.pdfen_US
dc.rightsI hereby certify that, if appropriate, I have obtained and attached hereto a written permission statement from the owner(s) of each third party copyrighted matter to be included in my thesis, dissertation, or project report, allowing distribution as specified below. I certify that the version I submitted is the same as that approved by my advisory committee. I hereby grant to Virginia Tech or its agents the non-exclusive license to archive and make accessible, under the conditions specified below, my thesis, dissertation, or project report in whole or in part in all forms of media, now or hereafter known. I retain all other ownership rights to the copyright of the thesis, dissertation or project report. I also retain the right to use in future works (such as articles or books) all or part of this thesis, dissertation, or project report.en_US
dc.subjectPolycarbonateen_US
dc.subjectPoly(ether ether ketone)en_US
dc.subjectPEEKen_US
dc.subjectPCen_US
dc.subjectMechanical alloyingen_US
dc.titleAn Investigation of the Microstructure and Properties of a Cryogenically Mechanically Alloyed Polycarbonate-Poly(Ether Ether Ketone) Systemen_US
dc.typeDissertationen_US
dc.contributor.departmentMaterials Science and Engineeringen_US
dc.description.degreePh. D.en_US
thesis.degree.namePh. D.en_US
thesis.degree.leveldoctoralen_US
thesis.degree.grantorVirginia Polytechnic Institute and State Universityen_US
thesis.degree.disciplineMaterials Science and Engineeringen_US
dc.contributor.committeechairKander, Ronald G.en_US
dc.contributor.committeememberAning, Alexander O.en_US
dc.contributor.committeememberLove, Brian J.en_US
dc.contributor.committeememberWard, Thomas C.en_US
dc.contributor.committeememberKampe, Stephen L.en_US
dc.identifier.sourceurlhttp://scholar.lib.vt.edu/theses/available/etd-11292001-141959/en_US
dc.date.sdate2001-11-29en_US
dc.date.rdate2002-11-30
dc.date.adate2001-11-30en_US


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