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Article
Synthesis of Core-Shell Polyurethane-Polydimethylsiloxane Particles by Polyaddition in Organic Dispersant Media: Mechanism of Particle Formation
Article first published online: 20 JUN 2005
DOI: 10.1002/masy.200550821
Copyright © 2005 WILEY-VCH Verlag GmbH & Co. KGaA, Weinheim
Issue
1521-3900/asset/cover.gif?v=1&s=8b00f3e1eaf89f5c9e9dfe7beb4bad9a91aff1d5 "Macromolecular Symposia")
Macromolecular Symposia
Special Issue: Polymer Chemistry, Reactions and Processes
Volume 226, Issue 1, pages 227–238, May 2005
Additional Information
How to Cite
Chambon, P., Cloutet, E. and Cramail, H. (2005), Synthesis of Core-Shell Polyurethane-Polydimethylsiloxane Particles by Polyaddition in Organic Dispersant Media: Mechanism of Particle Formation. Macromol. Symp., 226: 227–238. doi: 10.1002/masy.200550821
Publication History
- Issue published online: 20 JUN 2005
- Article first published online: 20 JUN 2005
- Abstract
- Cited By
Keywords:
- core-shell particles;
- dispersion polymerization;
- polyaddition;
- polydimethylsiloxane, polyurethane
Abstract
Core-shell polyurethane (PUR)-polydimethylsiloxane (PDMS) particles were prepared by polyaddition between ethylene glycol and tolylene-2,4-diisocyanate in cyclohexane, used as the organic dispersant phase, in the presence of reactive hydroxy-terminated polydimethylsiloxane steric stabilizers. The reaction extent and the PUR particle size, monitored by FTIR, 1H NMR, SEC, SEM and TEM techniques against time, were found a function of the PDMS concentration, functionality and molar mass. A mechanism of the polyurethane particle growth is proposed on the grounds of the kinetic investigation.