Hybrid waterborne polyurethane/acrylate dispersion synthesized with bisphenol A-glicidylmethacrylate (Bis-GMA) grafting agent
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http://hdl.handle.net/10045/73713
Títol: | Hybrid waterborne polyurethane/acrylate dispersion synthesized with bisphenol A-glicidylmethacrylate (Bis-GMA) grafting agent |
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Autors: | Alvarez, Gustavo A. | Fuensanta, Mónica | Orozco, Víctor H. | Giraldo, Luis F. | Martín-Martínez, José Miguel |
Grups d'investigació o GITE: | Adhesión y Adhesivos |
Centre, Departament o Servei: | Universidad de Alicante. Departamento de Química Inorgánica |
Paraules clau: | Waterborne dispersions | Polyurethane-acrylate | Bisphenol-A-glycidyl methacrylate (Bis-GMA) | Coatings |
Àrees de coneixement: | Química Inorgánica |
Data de publicació: | de maig-2018 |
Editor: | Elsevier |
Citació bibliogràfica: | Progress in Organic Coatings. 2018, 118: 30-39. doi:10.1016/j.porgcoat.2018.01.016 |
Resum: | New hybrid waterborne polyurethane/acrylate (WPUA) dispersions were synthesized by grafting with bisphenol-A-glycidyl dimethacrylate (Bis-GMA) in order to create chemical bonds between polyurethane and polyacrylate chains. WPUAs were prepared by using prepolymer self-emulsifying method with isophorone diisocianate, poly(tetramethylene ether) glycol, dimethylolpropionic acid, and ethylenediamine in the polyurethanic part, and styrene and n-butyl acrylate in the polyacrylate portion. A redox pair system consisting of ascorbic acid and hydrogen peroxide were used as polymerization initiator. The particle size of the WPUA dispersions increased by increasing the Bis-GMA/1,4 butanediol ratio, stable dispersions of negatively charged particles were obtained, and they had low viscosity (around 1.3 mPa.s) in spite of the relatively high solids content (27 wt%). Higher thermal stability was obtained when 50 mol% of chain extension was carried out with Bis-GMA. Using Bis-GMA/BD, instead of HEMA, as grafting agent, allowed obtaining hybrid polyurethane dispersions with the lowest mean particle size and better colloidal stability. Finally, the addition of 35 wt% Bis-GMA increased noticeably the cross-cut adhesion of polyurethane/acrylate coatings to stainless steel. |
Patrocinadors: | The authors thank to the University of Antioquia for the “Estudiante Instructor” Grant. |
URI: | http://hdl.handle.net/10045/73713 |
ISSN: | 0300-9440 (Print) | 1873-331X (Online) |
DOI: | 10.1016/j.porgcoat.2018.01.016 |
Idioma: | eng |
Tipus: | info:eu-repo/semantics/article |
Drets: | © 2018 Published by Elsevier B.V. |
Revisió científica: | si |
Versió de l'editor: | http://dx.doi.org/10.1016/j.porgcoat.2018.01.016 |
Apareix a la col·lecció: | INV - LAA - Artículos de Revistas |
Arxius per aquest ítem:
Arxiu | Descripció | Tamany | Format | |
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2018_Alvarez_etal_ProgrOrganCoat_final.pdf | Versión final (acceso restringido) | 988,91 kB | Adobe PDF | Obrir Sol·licitar una còpia |
2018_Alvarez_etal_ProgrOrganCoat_accepted.pdf | Accepted Manuscript (acceso abierto) | 1,65 MB | Adobe PDF | Obrir Vista prèvia |
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