Polyol‐Mediated Synthesis of Zinc Oxide Nanorods and Nanocomposites with Poly(methyl methacrylate)

Journal of Nanomaterials - Tập 2012 Số 1 - 2012
Alojz Anžlovar1,2, Zorica Crnjak Orel1,2, Ksenija Kogej3, Majda Žigon1,2
1Laboratory for Polymer Chemistry and Technology, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana
2Laboratory for Polymer Chemistry and Technology, National Institute of Chemistry, Hajdrihova 19, 1000 Ljubljana, Slovenia
3Chair of Physical Chemistry, Faculty of Chemistry and Chemical Technology, University of Ljubljana, AškerŸeva 5, 1000 Ljubljana, Slovenia

Tóm tắt

ZnO nanorods (length 30–150 nm) were synthesized in di(ethylene glycol) using Zn(CH3COO)2 as a precursor and para‐toluene sulphonic acid, p‐TSA, as an end‐capping agent. Increasing the concentration of p‐TSA above 0.1 M causes the reduction of the ZnO length. Nanocomposites with poly(methyl methacrylate) were prepared using unmodified nanorods. They enhanced the UV absorption of nanocomposites (~98%) at low ZnO concentrations (0.05–0.1 wt.%), while visible light transparency was high. At concentrations of 1 wt.% and above, nanorods enhanced the thermal stability of nanocomposites. At low concentrations (0.05–0.1 wt.%), they increased the storage modulus of material and shifted Tg towards higher temperatures as shown by dynamic mechanical analysis, DMA, while at higher concentrations (1.0 wt.%) this effect was deteriorated. DMA also showed that spherical ZnO particles have a more pronounced effect on the storage modulus and Tg than nanorods.

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Journal of Nanomaterials

Tập 2012 Số 1

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