| Titre : |
The influence of methacrylic acid and urethane methacrylate on the film properties of hybrid urethane–acrylic latexes |
| Type de document : |
texte imprimé |
| Année de publication : |
2021 |
| Article en page(s) : |
p. 1557-1577 |
| Note générale : |
Bibliogr. |
| Langues : |
Américain (ame) |
| Catégories : |
Caractérisation
Composés organiques -- Synthèse
Copolymère uréthane acrylique
Extrait sec
Formation de film
Formulation (Génie chimique)
Granulométrie
Méthacrylate d'uréthane
Méthacrylique, AcideL'histoire de l'acide méthacrylique commence en 1865, année où il est synthétisé pour la première fois à partir du méthacrylate d'éthyle.
L'acide méthacrylique est très réactif avec les groupes carboxyles, vinyles et esters.
Poids moléculaires
Revêtements -- Propriétés mécaniques
Revêtements -- Propriétés thermiques
Revêtements organiques
Transition vitreuse
Viscoélasticité
|
| Index. décimale : |
667.9 Revêtements et enduits |
| Résumé : |
A non-isocyanate pathway was used to synthesize a urethane methacrylate monomer, 2-((methylcarbamoyl)oxy)ethyl methacrylate (MEM) and methacrylic acid (MAA). The MEM and MAA mixture was copolymerized with MMA and BA in a semicontinuous monomer-starved process to prepare latexes via emulsion polymerization. Varying amounts of MEM and MAA monomers were introduced to the latex, and their effect on the thermal properties, film formation, viscoelastic, mechanical and morphological properties was examined. The upper limit functionality concentration was evaluated based on the latex stability. Incorporation of MEM and MAA in latexes enhanced film formation properties displayed by lowering MFFT. MEM and MAA functionalized latexes exhibited enhanced Young’s modulus, tensile strength and hardness compared to the control latex without any MEM and MAA. |
| Note de contenu : |
- EXPERIMENTAL : Materials - Instrumentation - Synthesis of monomers and latexes - Synthesis of latexes - Latex characterization
- RESULTS : Characterization of MEM+MAA - Latex conversion, particle size and molecular weight - Thermal properties and film formation - Viscoelastic properties - Mechanical properties - Morphological properties—TEM - Morphological properties—AFM - Coatings properties
- Table 1 Latex formulations for 0, 2, 5 and 10 mol% MEM+MAA
- Table 2 Solids content, overall conversion, particle size and Mw− results of MEM+MAA latexes
- Table 3 Glass transition temperature, minimum film formation temperature, and their difference for MEM+MAA latexes
- Table 4 Viscoelastic properties of MEM+MAA latexes as a function of increasing functionality of MEM+MAA
- Table 5 Roughness data for 0, 2, 5 and 10 mol% MEM+MAA latex
- Table 6 Coatings tests results for MEM+MAA latexes as a function of increased functionality from 0 to 10 mol% |
| DOI : |
https://doi.org/10.1007/s11998-021-00497-7 |
| En ligne : |
https://link.springer.com/content/pdf/10.1007/s11998-021-00497-7.pdf |
| Format de la ressource électronique : |
Pdf |
| Permalink : |
https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=36808 |
in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 6 (11/2021) . - p. 1557-1577
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The influence of methacrylic acid and urethane methacrylate on the film properties of hybrid urethane–acrylic latexes in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 6 (11/2021)
