| Titre : |
Influence of selection of surfactant system on application properties of polymeric dispersions |
| Type de document : |
texte imprimé |
| Auteurs : |
Lukasz Toma, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 34-37 |
| Note générale : |
Bibliogr. |
| Langues : |
Anglais (eng) |
| Catégories : |
Copolymère styrène acrylique
Core-Shell
Dispersions et suspensions
Emulsifiants
Perméabilité
Polyacryliques
Polymérisation
Résistance aux frottements humides
Stabilité chimique
Stabilité thermique
Taille des particules
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Anionic and non-ionic surfactants were evaluated in pure-acrylic and low MFFT (0°C) styrene-acrylic dispersions. Synthesis of dispersions was conducted by seeded emulsion polymerisation. Two types of pure-acrylic dispersions were synthetised - conventional and core-shell type, obtained in two-stage emulsion polymerisation. In the conventional dispersion influence of anionic emulsifier on particle size was evaluated. In the core-shell type impact of emulsifiers on water-resistance and chemical stability of dispersion was tested. Non-ionic surfactants were used in low MFFT styrene-acrylic dispersion in order to evaluate their influence on chemical and freeze-thaw stability of dispersion. Based on synthetised dispersions, samples of high PVC (75.94%) white point were prepared and their wet-scrub resistance (40 cycles) was analysed. |
| Note de contenu : |
- MATERIALS : 1. Anionic surfactants - 2. Nonionic and amphoteric surfactants
- INFLUENCE ON PARTICLE SIZE : Synthesis of the MMA/EA dispersions - Particle size evaluation
- INFLUENCE ON CHEMICAL STABILITY OF DISPERSION AND WATER PERMEABILITY OF COATING : Synthesis of the acrylic core-shell dispersion - Determination of water uptake - Chemical stability
- INFLUENCE OF NONIONIC SURFACTANT ON DISPERSION PROPERTIES : Synthesis of the low MFFT styrene-acrylic dispersions - Chemical stability - Wet-scrub resistance of white matte paint - Freeze-thaw stability of commercial SA latex
- TABLES : 1. Composition of MMA/EA dispersion - 2. Composition of the acrylic core-shell dispersion - 3. The chemical stablity of received core-shell dispersions - 4. Composition of the low-MFFT S/BA dispersion - 5. Chemical stabilty of synthetised S/BA dispersions
- FIGURES : 1. Comparison of d50 particle size of the MMA/EA dispersions - 2. Comparison of water uptake of the polymer film of the obtained core-shell dispersions - 3. Comparison of freeze-thaw stability |
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in POLYMERS PAINT COLOUR JOURNAL - PPCJ > Vol. 207, N° 4634 (09/2017) . - p. 34-37
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