| Titre : |
Stability and properties of waterborne polyurethane/clay nanocomposite dispersions |
| Type de document : |
texte imprimé |
| Auteurs : |
Mohamed Mizanur Rahman, Auteur |
| Année de publication : |
2017 |
| Article en page(s) : |
p. 1357-1368 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Argile
Dispersions et suspensions
Encapsulation
Polymères en émulsion
Polyuréthanes
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
Factors that can affect the stability of waterborne polyurethane (WBPU)/clay nanocomposite dispersions are reported. It is suggested that the dispersion stability depends on the carboxyl acid salt content, clay content, sonication (mechanical forces), and clay surface structure. It was observed that the dispersion stability increased with increasing carboxyl acid salt content after applying sonication (mechanical forces) in clay with OH groups (Cloisite 30B) up to 23.58 mol% DMPA. Encapsulated (WBPU20-30B4-M and WBPU23-30B5-M) clay in PU particles was formed using the above combination. The dispersion with clay encapsulated in PU particles had the longest storage time of all of the dispersions. The zeta potential, particle size, particle size distribution, and viscosity of the dispersions also depend on carboxyl acid salt content, clay content, sonication (mechanical forces), and clay surface structure. |
| Note de contenu : |
- EXPERIMENTAL SECTION : Materials - Preparation of pristine WBPU dispersions - Preparation of WBPU/clay nanocomposite dispersions (Process A) - Preparation of WBPU/clay nanocomposite dispersions (Process B, Table 3) - Storage of WBPU/clay nanocomposite dispersions - Preparation of films - Characterization
- RESULT AND DISCUSSION : Synthesis and identification - Stability of dispersion - TEM analysis - Zeta potential analysis - Particle size and particle size distribution analysis - Viscosity analysis |
| DOI : |
10.1007/s11998-017-9944-3 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007%2Fs11998-017-9944-3.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=29640 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 14, N° 6 (11/2017) . - p. 1357-1368
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Stability and properties of waterborne polyurethane/clay nanocomposite dispersions in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 14, N° 6 (11/2017)
