[article]
| Titre : |
Characterization of two-stage latexes using dynamic mechanical thermal analysis |
| Type de document : |
texte imprimé |
| Auteurs : |
Brian Rearick, Auteur ; Shanti Swarup, Auteur ; Peter Kamarchik, Auteur |
| Année de publication : |
1996 |
| Article en page(s) : |
p. 25-31 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Analyse thermomécanique dynamique
Caractérisation
Latex
Morphologie (matériaux)
Polyacryliques
Revêtements
Revêtements en phase aqueuse:Peinture en phase aqueuse
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Coatings prepared from two-stage acrylic latexes were chacterized using dynamic mechanical thermal analysis (DMTA). The DMTA data, in conjunction with additional supporting data (differential scanning calorimetry (DSC), thermomechanical analysis (TMA), and particle size analysis), provided detailed information on copolymer compositions, latex particle morphologies, and coating morphologies. Depending on mononer selection and monomer order of addition during polymerization, one of three different particle morphologies was obtained : two particles of different composition, two-phase particles, or interpenetrating polymer network (IPN) particles. Coating performance was highly dependent on latex and coating morphologies, as well as monomer composition. IPN latex morphologies produced coatings with superior mechanical properties and chemical resistance. |
| Note de contenu : |
- INTRODUCTION : Background-composite latexes - Background characterization of latex morphology using dynamic mechanical thermal analysis (DMTA)
- EXPERIMENTAL PROCEDURE : Latex preparation - DMTA-sample preparation - DMTA-testing - DSC-sample preparation and testing - TMA-sample preparation and testing - Particle siza analysis
- RESULTS AND DISCUSSION : Control latex - Latex modified in stage 1 - Latex modified in stage 2 - Latex modified in stage 2 with soft monomers and no crosslinkers - Structural models of latexes and coatings |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=18450 |
in JOURNAL OF COATINGS TECHNOLOGY (JCT) > Vol. 68, N° 862 (11/1996) . - p. 25-31
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