In situ preparation and properties of rubber/inorganic oxide nanocomposites

Simple item page
dc.contributor.advisorLuyt, A. S.
dc.contributor.advisorMessori, M.
dc.contributor.authorMokhothu, Thabang Hendrica
dc.date.accessioned2016-01-13T14:21:42Z
dc.date.available2016-01-13T14:21:42Z
dc.date.copyright2014-01
dc.date.issued2014-01
dc.date.submitted2014-01
dc.description.abstractThe present paper is concerned with the preparation of a filled elastomer by means the non-conventional bottom-up approach to polymer composites, alternatively with the conventional mechanical compounding of preformed filler particles with rubber. EPDM rubber was modified with in situ generated silica particles prepared by means of a sol-gel process adopting a solution process. The used synthetic procedure permitted the preparation of highly filled rubbers (up to 40 wt% of silica) with silica particle dimensions ranging from 0.2 to 2 μm. Equilibrium swelling and extraction tests indicated a hindering effect of the presence of in situ generated silica on the vulcanization process which reduced the cross-linking degree of the rubber matrix. Both tensile tests and dynamic-mechanical analysis showed a significant improvement in the mechanical properties due to the presence of the reinforcing filler, with an enhancement more significant than that expected from a simple hydrodynamic reinforcing mechanism.en_ZA
dc.description.sponsorshipNational Research Foundation (NRF)en_ZA
dc.description.sponsorshipUniversity of the Free Stateen_ZA
dc.identifier.urihttp://hdl.handle.net/11660/2195
dc.language.isoenen_ZA
dc.publisherUniversity of the Free State (Qwaqwa Campus)en_ZA
dc.rights.holderUniversity of the Free State (Qwaqwa Campus)en_ZA
dc.subjectRubberen_ZA
dc.subjectNanocomposites (Materials)en_ZA
dc.subjectSilicaen_ZA
dc.subjectFilled rubberen_ZA
dc.subjectSol-gelen_ZA
dc.subjectEPDMen_ZA
dc.subjectThesis (Ph.D. (Chemistry))--University of the Free State (Qwaqwa Campus), 2014en_ZA
dc.titleIn situ preparation and properties of rubber/inorganic oxide nanocompositesen_ZA
dc.typeThesisen_ZA
Files
Original bundle
Now showing 1 - 1 of 1
Thumbnail Image
Name:
Mokhothuth_PhD.pdf
Size:
6.16 MB
Format:
Adobe Portable Document Format
Description:
Download
License bundle
Now showing 1 - 1 of 1
No Thumbnail Available
Name:
license.txt
Size:
1.71 KB
Format:
Item-specific license agreed upon to submission
Description:
Download
Collections
All Electronic Theses and Dissertations
Doctoral Degrees (Chemistry)