Studies on the preparation and characterization of poly(4-vinylpyridine) microgel. I. Preparation with polymer emulsifier
Article first published online: 10 MAR 2003
Copyright © 1991 John Wiley & Sons, Inc.
Journal of Applied Polymer Science
Volume 43, Issue 8, pages 1451–1457, 20 October 1991
How to Cite
Ma, G. H. and Fukutomi, T. (1991), Studies on the preparation and characterization of poly(4-vinylpyridine) microgel. I. Preparation with polymer emulsifier. J. Appl. Polym. Sci., 43: 1451–1457. doi: 10.1002/app.1991.070430806
- Issue published online: 10 MAR 2003
- Article first published online: 10 MAR 2003
- Manuscript Accepted: 9 JAN 1991
- Manuscript Received: 18 JUN 1990
Poly(4-vinylpyridine) (P4VP) microgels with a narrow size distribution have been prepared by a special emulsion polymerization method. This is to say that P4VP, to which cation and double-bond were introduced with iodomethane and chloromethylstyrene, by quarternization reaction was used as a polymer emulsifier. Divinylbenzene was used as a crosslinking agent. It was found that the microgel became larger with the increase in monomer concentration, and became smaller and softer with the enhancing emulsifer/monomer ratio. Microgels, with the diameter of between 70–700 nm, were obtained by varying the monomer concentration from 1.0 wt % to 5.0 wt %, and by varying the emulsifier/monomer (unit/unit) ratio from 0–10.0 mol %. Compared with conventional emulsion polymerization with surfactant or hydrophilic monomer, this method provides an advantage in that monoingredient microgels can be obtained.