Nanomechanical properties and nanoscale deformation of PDMS nanocomposites

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dc.contributor.author Charitidis, CA en
dc.contributor.author Koumoulos, EP en
dc.date.accessioned 2014-03-01T02:53:56Z
dc.date.available 2014-03-01T02:53:56Z
dc.date.issued 2012 en
dc.identifier.issn 14658011 en
dc.identifier.uri http://hdl.handle.net/123456789/36493
dc.subject Elastomer en
dc.subject Nanoindentation en
dc.subject Nanomechanical properties en
dc.subject Polydimethylsiloxane en
dc.subject.other Contact areas en
dc.subject.other Indenters en
dc.subject.other Nano clays en
dc.subject.other Nano-scale deformation en
dc.subject.other Nanoclay concentrations en
dc.subject.other Nanoindentation techniques en
dc.subject.other Nanomechanical property en
dc.subject.other Organically modified montmorillonite en
dc.subject.other Polydimethylsiloxane PDMS en
dc.subject.other Soft polymers en
dc.subject.other Surface region en
dc.subject.other Clay minerals en
dc.subject.other Elastomers en
dc.subject.other Fourier transform infrared spectroscopy en
dc.subject.other Microchannels en
dc.subject.other Nanocomposites en
dc.subject.other Nanoindentation en
dc.subject.other Polydimethylsiloxane en
dc.subject.other Scanning probe microscopy en
dc.subject.other Tensile testing en
dc.subject.other X ray diffraction en
dc.subject.other Silicones en
dc.title Nanomechanical properties and nanoscale deformation of PDMS nanocomposites en
heal.type conferenceItem en
heal.identifier.primary 10.1179/1743289810Y.0000000037 en
heal.identifier.secondary http://dx.doi.org/10.1179/1743289810Y.0000000037 en
heal.publicationDate 2012 en
heal.abstract In this study, nanoindentation technique was utilised to estimate the nanomechanical properties (hardness H, and elastic modulus E) of elastomeric polydimethylsiloxane (PDMS) samples consisting of different nanoclay concentrations (organically modified montmorillonite), namely, 0, 5 and 8 parts per hundred. The PDMS samples were also characterised by Fourier transform infrared spectroscopy, X-ray diffraction and tensile testing. In addition, the surface of the nanocomposites was characterised through scanning probe microscopy, revealing surface modification with increasing nanoclay content in the PDMS matrix. Additionally, several analyses on nanoindentation data were performed, and the exact surface region (with higher values of H and E) was clearly defined. One key problem in using the Oliver and Pharr (O&P) method is the determination of the contact area between the indenter and the sample. It is believed that the contact area is underestimated using the O&P method and Hertzian analysis for soft polymers. Therefore, calculations using the O&P method and Hertzian analysis have been performed and compared. The change in H/E slope revealed that the addition of nanoclay amount strengthens the PDMS-montmorillonite nanocomposite. © Institute of Materials, Minerals and Mining 2012. en
heal.journalName Plastics, Rubber and Composites en
dc.identifier.doi 10.1179/1743289810Y.0000000037 en
dc.identifier.volume 41 en
dc.identifier.issue 2 en
dc.identifier.spage 88 en
dc.identifier.epage 93 en

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