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In Situ Monitoring of Dispersion Film Formation Using Tapping-Mode Atomic Force Microscopy

Published online by Cambridge University Press:  01 February 2011

Jing Li ,
Wenbin Liang  and
Steve Chum
Jing Li
Affiliation:
Analytical Sciences Laboratory
Wenbin Liang
Affiliation:
Plastic R&D, The Dow Chemical Company 2301. N. Brazosport Blvd., B1470, Freeport, TX 77566
Steve Chum
Affiliation:
Plastic R&D, The Dow Chemical Company 2301. N. Brazosport Blvd., B1470, Freeport, TX 77566
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Abstract

The coalescence process of poly (ethylene-co-vinyl acetate) (EVA) and poly (ethylene-co-octene) (EO) dispersion particles was monitored in situ using tapping-mode atomic force microscopy (TMAFM) equipped with a miniature hot stage. This work describes the effect of particle size on the film formation temperature based on direct experimental observation, clarifying further the debate about particle size effect on minimum film formation temperature (MFFT). The results suggest that semicrystalline polyolefin particles have similar deformation temperature dependence. Smaller particles tend to deform faster than larger particles, which is attributed to their smaller mass. Furthermore, morphology changes and mechanical property development associated with the film formation process are also discussed. The TMAFM technique is shown to be very useful in gaining insight into the film formation mechanism, which will provide guidance in future practical applications with polyolefin dispersions.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 838: Symposium O – Scanning Probe and Other Novel Microscopies of Local Phenomena in Nanostructured Materials , 2004 , O10.19
Copyright
Copyright © Materials Research Society 2005

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References

1. Keddie, J. L., Mater. Sci. Eng., R21 (3), 101 (1997).Google Scholar
2. Eckersley, S. T., Rudin, A., J. Coat Technol., 62, 89 (1990).Google Scholar
3. Brodnyan, J. G. and Konen, T., J. of Applied Polymer Sciences, 8, 687 (1964)Google Scholar
4. Sperry, P. R., Snyder, B. S., O'Dowd, M. L. and Lesko, P. M., Langmuir, 10, 2619 (1994)Google Scholar
5. Visschers, M., Laven, J. and German, A. L., Progress in Organic Coatings, 30, 39 (1997).Google Scholar
6. Hobbs, J. K., Humphris, A. D. L. and Miles, M. J., Macromolecules, 34, 5508 (2001).Google Scholar
7. Wool, R. P., Polymer Interfaces, Hanser Publishers: Munich, 1995.Google Scholar