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Correlating Nanoparticle Dispersion to Surface Mechanical Properties of TiO2/Polymer Composites

Published online by Cambridge University Press:  31 January 2011

Yongyan Pang
Affiliation:
[email protected]@hotmail.com, National Institute of Standards and Technology, Building and Fire Research Laboratory, Gaithersburg, Maryland, United States
Stephanie S. Watson
Affiliation:
[email protected], National Institute of Standards and Technology, Building and Fire Research Laboratory, Gaithersburg, Maryland, United States
Aaron M. Forster
Affiliation:
[email protected], National Institute of Standards and Technology, Building and Fire Research Laboratory, Gaithersburg, Maryland, United States
Lipiin Sung
Affiliation:
[email protected], National Institute of Standards and Technology, Building and Fire Research Laboratory, Gaithersburg, Maryland, United States
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Abstract

The objective of this study is to characterize the nanoparticle dispersion and to investigate its effect on the surface mechanical properties of nanoparticle-polymer systems. Two types of TiO2 nanoparticles were chosen to mix in two polymeric matrices: solvent-borne acrylic urethane (AU) and water-borne butyl-acrylic styrene latex (latex) coatings. Nanoparticle dispersion was characterized using laser scanning confocal microscopy. Overall, Particle A (PA, without surface treatment) dispersed better than Particle B (PB, organic treatment) in both systems. The AU-PA system exhibited the best dispersion of the four systems, however PB forms big clusters in both of the matrices. Surface mechanical properties, such as surface modulus at micron and sub-micron length scales were determined from depth sensing indentation equipped with a pyramidal tip or a conical tip. The surface mechanical properties were strongly affected by the dispersion of nanoparticle clusters, and a good correlation was found between dispersion of nanoparticle clusters near surface and the modulus-depth mapping using a pyramid tip.

Type
Research Article
Copyright
Copyright © Materials Research Society 2010

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References

1 ACS Symposium Series1008: Nanotechnology Applications in Coatings, Eds: Fernando, R. H., Sung, L. P. (ACS/Oxford University Press. 2009).Google Scholar
2 Krieger, S., Cabrera, I., Ratering, M., Fichtner, T., Farwaha, R., JCT CoatingsTech., 26-30, (2008).Google Scholar
3 Sung, L. P., Watson, S. S., Baghai-Anaraki, M., Ho, D. L., Mat. Res. Soc. Symp. Proc., 740, 1541(2003).Google Scholar
4 Wang, D. L., Watson, S. S., Sung, L. P., Tseng, I-H., Bouis, C.J., Fernando, R., J. Coat. Technol. Res., (2009).Google Scholar
5 Flick, E., Water-Based Paint Formulation 4, Noyes Publication, Westwood, NJ, p34 (1994).Google Scholar
6 Faucheu, J., Sung, L.P., Martin, J. W., Wood, K. A., J. Coat. Technol. Res., 3, 29, (2006).Google Scholar
7 VanLandingham, M. R., J. of Res. of the Nat'l Inst. of Stds. and Tech., 108, 249 (2003).Google Scholar
8 Clerici, C., Gu, X., Sung, L. P., Forster, A. M., Ho, D. L., Stutzman, P., Nguyen, T. and Martin, J. W., Service Life Prediction for Polymeric Materials: Global Perspectives, Eds: Martin, J., Ryntz, R., Chin, J., Dickie, R., Chapter 31, pp 475492 (Springer Press, 2009)Google Scholar