Presented at the 36th Southeastern regional Meeting of the American Chemical Society, Raleigh, NC, October 24-26, 1984.
Dissolution rates of poly(methyl methacrylate) films in mixed solvents†
Article first published online: 9 MAR 2003
Copyright © 1986 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 31, Issue 1, pages 65–73, January 1986
How to Cite
Cooper, W. J., Krasicky, P. D. and Rodriguez, F. (1986), Dissolution rates of poly(methyl methacrylate) films in mixed solvents. J. Appl. Polym. Sci., 31: 65–73. doi: 10.1002/app.1986.070310107
- Issue published online: 9 MAR 2003
- Article first published online: 9 MAR 2003
- Manuscript Accepted: 4 MAR 1985
- Manuscript Received: 2 JAN 1985
A laser interferometer has been used to measure in situ the dissolution rates of thin films of poly(methyl methacrylate) (PMMA). The most significant finding is that addition of small amounts of a low-molecular weight nonsolvent can increase the rate obtained with a higher molecular weight solvent. In this study, silicon wafers were coated with polymer (about 1 μm thick) and annealed at 155°C for 1 h. The dissolution rates were measured at 17.5, 22.5, and 27.5°C. All the mixtures contained methyl ethyl ketone (MEK) (2-butanone), as the major component. The minor component was water, methanol, ethanol, 1-propanol, 2-propanol, or ethylene glycol. Water and methanol showed the greatest effects. Both were able to increase the dissolution rate as much as two-fold. All the mixtures exhibit the same activation energy (25 kcal/mol) despite their wide differences in dissolution rate.