dc.contributor.author |
Moyo, Lumbidzani
|
|
dc.contributor.author |
Focke, Walter Wilhelm
|
|
dc.contributor.author |
Heidenreich, D.
|
|
dc.contributor.author |
Labuschagne, F.J.W.J. (Frederick Johannes Willem Jacobus)
|
|
dc.contributor.author |
Radusch, Hans-Joachim
|
|
dc.date.accessioned |
2013-04-05T17:05:36Z |
|
dc.date.available |
2013-04-05T17:05:36Z |
|
dc.date.issued |
2013-03 |
|
dc.description.abstract |
Carbonate and stearate intercalated layered double hydroxides were used as fillers to prepare polymer
micro- and nanocomposites, respectively. The stearate modified starting material was bilayerintercalated
clay. During melt compounding excess stearates were released and the clay reverted to a
monolayer-intercalated form. The exuded stearate acted as a lubricant lowering the melt viscosity of
poly(ethylene-co-vinyl acetate) and linear low density polyethylene matrices. Strong hydrogen bond
interactions between the chains of poly(ethylene-co-vinyl alcohol) and the clay platelet surfaces
overwhelmed the lubrication effect and caused an increase in the melt viscosity of this matrix. The
notched Charpy impact strength of this composite is almost double that of the neat polymer. It appears
that this can be attributed to the ability of the highly dispersed and randomly oriented nano-sized clay
platelets to promote extensive internal micro-cavitation during impact loading. The creation of a large
internal surface area provided the requisite energy dissipation mechanism. |
en |
dc.description.librarian |
hj2013 |
en |
dc.description.librarian |
ai2013 |
en |
dc.description.sponsorship |
The National
Research Foundation (NRF) and the Bundesministerium fur Forschung (BMBF) |
en |
dc.description.uri |
http://www.elsevier.com/locate/matresbu |
en |
dc.identifier.citation |
Moyo, L, Focke, WW, Heidenreich, D, Labuschagne, FJWJ & Radusch, HJ 2013, 'Properties of layered double hydroxide micro- and nanocomposites', Materials Research Bulletin, vol. 48, no. 3, pp. 1218-1227. |
en |
dc.identifier.issn |
0025-5408 (print) |
|
dc.identifier.issn |
1873-4227 (online) |
|
dc.identifier.other |
10.1016/j.materresbull.2012.11.040 |
|
dc.identifier.uri |
http://hdl.handle.net/2263/21253 |
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dc.language.iso |
en |
en |
dc.publisher |
Elsevier |
en |
dc.rights |
© 2012 Elsevier. All rights reserved. Notice : this is the author’s version of a work that was accepted for publication in Materials Research Bulletin. Changes resulting from the publishing process, such as peer review, editing, corrections, structural formatting, and other quality control mechanisms may not be reflected in this document. Changes may have been made to this work since it was submitted for publication. A definitive version was subsequently published in Materials Research Bulletin, vol. 48, no. 3, pp. 1218-1227, 2013. |
en |
dc.subject |
Composites |
en |
dc.subject |
Layered compounds |
en |
dc.subject |
Intercalation reactions |
en |
dc.subject |
Electron microscopy |
en |
dc.subject.lcsh |
Layered double hydroxide (LDH) |
en |
dc.subject.lcsh |
Nanocomposites (Materials) |
en |
dc.subject.lcsh |
Stearates |
en |
dc.subject.lcsh |
Polymeric composites |
en |
dc.title |
Properties of layered double hydroxide micro- and nanocomposites |
en |
dc.type |
Postprint Article |
en |