| Article ID | Journal | Published Year | Pages | File Type |
|---|---|---|---|---|
| 5187020 | Polymer | 2005 | 9 Pages |
Abstract
A remarkable correlation exists between the degree of expansion of polyurethane foams and the structure of the reacting premixes. Polyurethane foams obtained from reacting premixes containing microemulsions are highly expanded. The expansion rate is proportional to the volume fraction of microemulsion in the premix. The stability of premixes with and without microemulsion is completely different suggesting distinct creaming mechanisms. We apply this idea to synthesize polyurethane foams from microemulsions successfully. This approach can be used to rationalize the design of polyurethane formulations leading to highly expanded foams.
Keywords
Related Topics
Physical Sciences and Engineering
Chemistry
Organic Chemistry
Authors
Christian Ligoure, Michel Cloitre, Christille Le Chatelier, Fabrice Monti, Ludwik Leibler,