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dc.contributor.advisorTanoğlu, Metinen
dc.contributor.authorKarşal, Çiçek-
dc.descriptionThesis (Master)--Izmir Institute of Technology, Materials Science and Engineering, Izmir, 2008en
dc.descriptionIncludes bibliographical references (leaves: 71-74)en
dc.descriptionText in English; Abstract: Turkish and Englishen
dc.descriptionxii, 74 leavesen
dc.description.abstractPolymer/clay nanocomposites have been extensively studied in recent years because they often exhibit improved properties different from their micro and macrocomposite counterparts. Addition of organophilic layered silicates to the polymer produces effective polymer nanocomposites by intercalation of macromolecules into the interlayer spaces. The performance of polymer/clay composites is not only related to the nature of the clay but also to the reinforcing mechanism of filler and the preparation conditions.In this study, the effects of mixing conditions and effect of aging on mechanical,physical and thermal properties of ethylene-propylene-diene rubber (EPDM)/Organo modified montmorillonite (OMMT) nanocomposites were studied at two different clay loadings 5 wt.% and 10 wt.%. EPDM/OMMT nanocomposites were prepared by melt blending method. The experimental results of X-ray diffraction (XRD) and scanning electron microscopy showed that the organically modified MMT existed in the form of an intercalated structure and that was exfoliated in EPDM matrix depending on the mixing conditions. XRD patterns showed that the interlayer distance of the organically modified clay was 30.9A, which was larger than those of the unmodified clay (14.6A).The mechanical evaluation of the nanocomposites was performed by tensile and tear testing. The mechanical tests showed that the properties of nanocomposites were significantly improved with addition of OMMT. The effects of the processing conditions were manifested in both the morphology and mechanical properties, which showed significant increase when optimized process conditions are applied. In addition, chemical test was performed on the nanocomposites to monitor the degradation of the mechanical properties. It was found that the reduction of the mechanical properties of nanocomposites after aging process is lower as compared to those of neat EPDM.en
dc.publisherIzmir Institute of Technologyen
dc.publisherIzmir Institute of Technologyen_US
dc.subject.lccTA418.9.N35 K188 2008en
dc.subject.lcshNanostructured materialsen
dc.subject.lcshComposite materialsen
dc.subject.lcshPolymeric compositesen
dc.subject.lcshPolymer clayen
dc.titlePreparation and physical characterization of clay/epdm nanocompositesen_US
dc.typeMaster Thesisen_US
dc.institutionauthorKarşal, Çiçek-
dc.departmentThesis (Master)--İzmir Institute of Technology, Materials Science and Engineeringen_US
item.fulltextWith Fulltext-
item.openairetypeMaster Thesis-
Appears in Collections:Master Degree / Yüksek Lisans Tezleri
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