Preparation and characterization of aluminum oxide-poly(ethylene-co-butyl acrylate) nanocomposites
2012 (English)In: Journal of Applied Polymer Science, ISSN 0021-8995, E-ISSN 1097-4628, Vol. 125, no 2, 975-983 p.Article in journal (Refereed) Published
This article describes the preparation and characterization of composites containing poly(ethylene-co-butyl acrylate) (EBA13 and EBA28 with 13 and 28 wt % butyl acrylate, respectively) and 212 wt % (0.53 vol %) of aluminum oxide nanoparticles (two types differing in specific surface area and hydroxyl-group concentration; uncoated and coated with, respectively, octyltriethoxysilane and aminopropyltriethoxysilane). A greater surface coverage was obtained with aminopropyltriethoxysilane than with octyltriethoxysilane. An overall good dispersion was obtained in the EBA-13 composites prepared by extrusion compounding. Composites with octyltriethoxysilane-coated nanoparticles showed the best dispersion. The addition of the nanoparticles to EBA28 resulted in poor dispersion, probably due to insufficiently high shear forces acting during extrusion mixing which were unable to break down nanoparticle agglomerates. The nanoparticles had no effect on the crystallization kinetics in the EBA13 composites, but in the EBA28 composites the presence of the nanoparticles led to an increase in the crystallization peak temperature, suggesting that the nanoparticles had a nucleating effect in this particular polymer.
Place, publisher, year, edition, pages
2012. Vol. 125, no 2, 975-983 p.
poly(ethylene-co-butyl acrylate), aluminium oxide nanoparticles, nanocomposites, silanization, dispersion, crystallization
IdentifiersURN: urn:nbn:se:kth:diva-28775DOI: 10.1002/app.36331ISI: 000302350300018ScopusID: 2-s2.0-84859579887OAI: oai:DiVA.org:kth-28775DiVA: diva2:390168
FunderSwedish Research Council, IFA 2007-5095
QC 201205082011-01-212011-01-212012-11-09Bibliographically approved