[article]
| Titre : |
Nanosphere latex synthesis using novel eco-friendly surfactants via emulsion polymerization |
| Type de document : |
texte imprimé |
| Auteurs : |
Afzal M. Awan, Auteur |
| Année de publication : |
2019 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Biosurfactants
Chlorure de polyvinyle
Emulsions -- Stabilité
Granulométrie
Haut extrait sec
Latex
Nanoparticules
Polyacryliques
Polyéthylène
Polyéthylène téréphtalate
polymères vinyliques
Polymérisation en émulsion
Polypropylène
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Surfactants are used in emulsion polymerization (EP) formulas at less than two percent of the total mass, but they play an important role in the EP processes. Surfactants contribute to the latex particle formation, their size and stability and they enhance the compatibility with the EP formula components, as well as ingredients used in product formulations, i.e., coatings, and pressure sensitive adhesives (PSAs).
This paper presents novel, eco-friendly surfactants and their use in the EP process and discusses surfactant ionic activity and its effects on particle size and process cleanliness. Latex synthesized with surfactant optimal blends containing anionic and nonionic moieties are discussed; latex synthesized with optimal blend surfactant properties, and its coatability on paper, polyethylene terephthalate (PET), polypropylene (PP), polyethylene (PE), and polyvinyl chloride (PVC) films is presented. |
| Note de contenu : |
- EP-3 and EP-6 surfactant properties
- Seed synthesis with EP-3 and EP-6
- Seed synthesis with EP-6
- Emulsion study
- Synthesis of high solids latexes
- EP-8 as a synergetic VOC- and APE-free surfactant
- Fig. 1 : Particle size of seed latex measured via Malvern Zeta sizer Nano ZS90
- Fig. 2 : The particle overlays of samples TLC 37-114
- Fig. 3 : Vinyl acrylics and acrylics emulsions stability at ambient conditions after 2 hours, 4 hours and 6 hours
- Fig. 4 : Latex solid formation at various interval of an EP- reaction
- Fig. 5 : The pre-emulsion, in the syringe, stability and latex stability in reactor after overnight mixing
- Fig. 6 : A particle size fractogram shows the particle’s evolution and growth with the addition of monomers at three separate intervals
- Table 1 : TLC EP-3 surfactant properties
- Table 2 : Seed recipe
- Table 3 : The properties of a latex seed prepared with EP-3 from various lot and activities
- Table 4 : The seed synthesis of EP-6
- Table 5 : The recipe used to make a full-blown latex
- Table 6 : A low Tg acrylics latex properties synthesized with EP-3
- Table 7 : The acrylics latex properties
- Table 8 : The multi-step seeded process to develop ultrafin particles |
| En ligne : |
https://www.coatingsworld.com/issues/2019-04-01/view_technical-papers/nanosphere [...] |
| Format de la ressource électronique : |
Html |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=32510 |
in COATINGS WORLD > Vol. 24, N° 4 (04/2019)
[article]
|
Aller sur edunet
Accueil
Ajouter le résultat dans votre panier Affiner la rechercheNanosphere latex synthesis using novel eco-friendly surfactants via emulsion polymerization / Afzal M. Awan in COATINGS WORLD, Vol. 24, N° 4 (04/2019)
