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Issue 18, 2010

Glass transition temperature changes of melt-blended polymer nanocomposites containing finely dispersed ZnOquantum dots

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Abstract

We report the linear increase in the glass transition temperature, Tg, with nanofiller weight content. ZnO quantum dots dispersed by melt-blending in a poly(methyl methacrylate) host were characterized by differential scanning calorimetry and dynamic mechanical analysis showing that the Tg of the system is described by a power law of the interparticle distance, hp, where the percolation exponent, ν, was 0.55 to 0.64. Our analysis demonstrates that the characteristic length of the polymer in PNCs is in the range of 0.41–0.90 nm. Our results suggest that polymer nanocomposites can be described by the quantitative models of polymer thin films.

Graphical abstract: Glass transition temperature changes of melt-blended polymer nanocomposites containing finely dispersed ZnO quantum dots

Article information


Submitted
23 Dec 2009
Accepted
07 Jul 2010
First published
06 Aug 2010

Soft Matter, 2010,6, 4482-4490
Article type
Paper

Glass transition temperature changes of melt-blended polymer nanocomposites containing finely dispersed ZnO quantum dots

M. Wong, R. Tsuji, S. Nutt and H. Sue, Soft Matter, 2010, 6, 4482 DOI: 10.1039/B927182A

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