Ramanathan, Lalgudi S. ; Baskaran, Durairaj ; Shukla, P. G. ; Sivaram, Swaminathan (2002) Preparation of polyurethane microspheres via dispersion polycondensation using poly(1,4-isoprene)-block-poly(ethylene oxide) as steric stabilizer Macromolecular Chemistry and Physics, 203 (7). pp. 998-1002. ISSN 1022-1352
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Official URL: http://onlinelibrary.wiley.com/doi/10.1002/1521-39...
Related URL: http://dx.doi.org/10.1002/1521-3935(20020401)203:7<998::AID-MACP998>3.0.CO;2-L
Abstract
A novel dispersion polymerization of a diisocyanate and a diol for the preparation of spherical polyurethane particles is reported. An amphiphilic block copolymer, namely, poly(1,4-isoprene)-block-poly(ethylene oxide) was used as a steric stabilizer. Monodisperse spherical particles were obtained in the size range from 0.2 to 2.0 μm. The polyurethane particle formation was dependent on the concentration of the steric stabilizer, the block segment molecular weight and the nature of dispersion medium. The polyurethane particles were stabilized by a mechanism involving physical adsorption of the steric stabilizer on the surface of the growing particle.
| Item Type: | Article |
|---|---|
| Source: | Copyright of this article belongs to John Wiley and Sons. |
| Keywords: | Amphiphilic Block Copolymer; Dispersion Polymerization; Polyurethane Microspheres; Steric Stabilizer |
| ID Code: | 48486 |
| Deposited On: | 14 Jul 2011 10:19 |
| Last Modified: | 14 Jul 2011 10:19 |
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