| Titre : |
Non-migratory surfactants in emulsion polymerisation |
| Type de document : |
texte imprimé |
| Auteurs : |
Jo Grade, Auteur ; Wolfgang Geuking, Auteur |
| Année de publication : |
2016 |
| Article en page(s) : |
p. 16-18, 21 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Adhésifs sensibles à la pression
Emulsions -- Stabilité
Latex
Polymérisation en émulsion
Revêtements en bâtiment:Peinture en bâtiment
Revêtements protecteurs
Stabilisants (chimie)
Surfactants
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
There are waterborne binders with enhanced dry film properties and present application data comparing conventional and copolymerisable surfactants.
Surfactants are essential components in the synthesis of emulsion polymers for controlling particle size and colloidal stability of the latex and in downstream formulations. Common surfactants used in latex synthesis, however, have poor compatibility with the hydrophobic polymer phase. Surfactant desorption in the wet state can cause particle flocculation upon storage or handling. Poor stability during film formation has a dramatic effect on dry film properties. Porous films result with poor pigment binding and protective properties. Phase separation and accumulation of surfactant into hydrophilic domains during film formation affects water whitening, blocking resistance and mechanical properties.
Non-migratory surfactants (NMS) become grafted on to the surface of polymer particles. Latex stability is enhanced, which positively affects shelf life, formulation ease and barrier properties.
Use of reactive surfactants is relevant for various application areas :
- Architectural coatings with better pigment binding properties
- Protective coatings with superior barrier properties or lower water diffusion rates
- Pressure sensitive adhesives with superior mechanical properties
This paper presents application data comparing conventional and copolymerisable surfactants.
NMS technology allows development of waterborne polylmer systems and dry films that does notshow the drawbacks commonly associated with the presence of surfactants. |
| Note de contenu : |
- SURFACTANTS AS ROOT CAUSE FOR POOR PERFORMANCE
- PROPERTIES AFFECTING SURFACTANT FAILURE : Latex stability - Protective and adhesive properties of the dry film - Appearance
- NON-MIGRATORY SURFACTANTS FOR EMULSION POLYMERS WITH ENHANCED PERFORMANCE
- PRODUCTS
- FORMULATING WITH REACTIVE SURFACTANTS
- TARGET END USES OF EMULSION POLYMERS STABILISED WITH REACTIVE SURFACTANTS
- EXPERIMENTAL : Reactivity of maxemul surfactants - Effects of reactive group on polymer mw - Enhanced barrier properties of a styrene acrylic latex - Reduced water whitening and water uptake for an All acrylics latex - Surfactant leaching and snail trail from a StyAcr based low PVC paint - Superior water repellency for a medium PVC paint based on WAP modified StyAcr binder - Non-migratory surfactants in emulsion polymerisation
- PRESSURE SENSITIVE ADHESIVES : Superior water whitening resistance for a laminated PSA |
| En ligne : |
https://drive.google.com/file/d/1pTBrQAXeRCh6p9TJpz35v0JPMvBVxsix/view?usp=drive [...] |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=27315 |
in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 206, N° 4627 (12/2016) . - p. 16-18, 21
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Non-migratory surfactants in emulsion polymerisation in POLYMERS PAINT COLOUR JOURNAL - PPCJ, Vol. 206, N° 4627 (12/2016)
