Hostname: page-component-78c5997874-4rdpn Total loading time: 0 Render date: 2024-11-05T15:17:01.876Z Has data issue: false hasContentIssue false
  • English
  • Français

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

Published online by Cambridge University Press:  31 January 2011

Yongyan Pang ,
Stephanie S. Watson ,
Aaron M. Forster  and
Lipiin Sung
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
Get access

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.

Keywords

polymernano-indentationmicrostructure
Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 1224: Symposia FF/GG – Mechanical Behavior at Small Scales — Experiments and Modeling , 2009 , 1224-FF10-16
Copyright
Copyright © Materials Research Society 2010

Access options

Get access to the full version of this content by using one of the access options below. (Log in options will check for institutional or personal access. Content may require purchase if you do not have access.)

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 475–492 (Springer Press, 2009)Google Scholar