| Titre : |
Foam stability and foam fractionation of water-reducible acrylic polymer systems |
| Type de document : |
texte imprimé |
| Auteurs : |
Rebecca Twite, Auteur ; Jiandong Zhu, Auteur ; Gordon P. Bierwagen, Auteur |
| Année de publication : |
1994 |
| Article en page(s) : |
p. 57-63 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Tags : |
'Peinture eau' Défaut Moussage Liant 'Acrylique dérivé polymère' |
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Foaminess of water-reducible polymer systems continues to pose problems inhibiting maximum effectiveness of these materials in industry. With this in mind, studies were initiated using water-reducible acrylic polymers, testing of the dynamic foam stability of this polymer at concentrations typical to industrial use (circa 20% by weight), and performing separations of the polymers by means of foam fractionation. The dynamic foam test consists of measuring the steady-state foam volume in relation to varied gas flow rates in a column provided with a gas frit and space for a fixed liquid volume of foaming liquid. Foam volume vs gas flow rate provides an efficient method in comparing foam stabilities of different water-reducible systems. Foam fractionation is an effective way of separating the surface active/foam stabilizing species in a system. Different aspects under consideration when characterizing the fractions are molecular weight distribution, surface tension, solids composition, and qualitative end-group analysisby by means of FTIR. Results reported include the ranking of polymer solutions by relative foaminess, and the characterization of the various fractions obtained by the foam fractionation of one typical W/R acrylic polymer. A comparison between microemulsions and W/R polymers is embarked. |
| Note de contenu : |
-INTRODUCTION
-PROCEDURES : Polymer synthesis - Preparation of solutions - Foaminess - Foam fractionation - Testing of solution properties
-RESULTS : Foaminess - Foam fractionation
-SUMMARY AND CONCLUSIONS
-FUTURE WORK |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18612 |
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 66, N° 830 (03/1994) . - p. 57-63
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