Waterborne hybrid (alkyd/styrene acrylic) emulsion polymers and exterior paint applications / Nurullah Kartaloglu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 20, N° 5 (09/2023)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 20, N° 5 (09/2023) . - p. 1621-1637 Titre : Waterborne hybrid (alkyd/styrene acrylic) emulsion polymers and exterior paint applications Type de document : texte imprimé Auteurs : Nurullah Kartaloglu, Auteur ; Suna Elif Akçin, Auteur ; Mesut Eren, Auteur ; Ali Delibas, Auteur Année de publication : 2023 Article en page(s) : p. 1621-1637 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Brillance (optique) Chanvre et constituants Le chanvre ou chanvrier (Cannabis sativa L.) est la seule espèce du genre botanique Cannabis. Ce terme latin est souvent utilisé aussi comme nom vernaculaire pour distinguer les variétés de chanvre cultivé à usage industriel des variétés de cannabis à usage récréatif ou médical. C'est une espèce de plante annuelle, de la famille des Cannabaceae. La graine de chanvre s'appelle le chènevis. Copolymère styrène acrylique Durée de vie (Ingénierie) Essais dynamiques Formulation (Génie chimique) Huiles et graisses végétales Latex Matériaux hybrides Opacité (optique) Polyalkydes Polymères -- Propriétés mécaniques Polymères -- Synthèse Revêtements en phase aqueuse Revêtements en phase aqueuse:Peinture en phase aqueuse Traction (mécanique) Index. décimale : 667.9 Revêtements et enduits Résumé : Since alkyd resins include hazardous solvents, converting alkyds into waterborne hybrid polymers is an essential research topic. Here, alkyd/styrene acrylic waterborne hybrid polymers were synthesized in the presence of monomers, water, emulsifiers, and an initiator by using synthesized alkyd resins at 0%, 5%, 10%, and 15% ratios based on the total monomer ratio. A mini-emulsion technique and a semi-batch polymerization method were used to synthesize the latexes. Two different biosources, tall oil fatty acids (TOFA) and hemp seed oils (HSO), were used to synthesize the alkyd resins. Synthesized waterborne hybrid latexes and their films were analyzed by using FTIR, NMR, particle size, MFFT, TGA, DSC, CA, AFM, and mechanical tests. It was determined that the type and concentration of the alkyds affected the viscosity, particle size, Tg and MFFT values, and appearance. It was also identified that alkyd incorporation took place with grafting and that the alkyd concentration was particularly effective in increasing the particle size. In addition, experiments were carried out on waterborne paint systems for exterior paint by using synthesized hybrid polymer emulsions. It was observed that the alkyd content was not effective in changing the paint color in hybrid latexes. As a result, it is suggested that hybrid waterborne latexes could be used for exterior paints. Note de contenu : - EXPERIMENTAL : Materials - TOFA-based alkyd resin synthesis - HSO-based alkyd resin synthesis - Synthesis of alkyd/styrene acrylic waterborne hybrid polymers - Preparation of paints - TESTS AND MEASUREMENTS : Analysis for TOFA and HSO - Analyzes of alkyd/styrene acrylic waterborne hybrid polymers - Analysis of paints - RESULTS AND DISCUSSION : Evaluation of TOFA and HSO - Evaluation of alkyd resins and alkyd/styrene acrylic waterborne hybrid polymers - Evaluation of paint samples prepared with hybrid latexes - Table 1 : Chemicals used in the study - Table 2 : Formulation of alkyd resin synthesis - Table 3 : Recipes for preparing hybrid latexes - Table 4 : Formulation of the paint - Table 5 : Physicochemical properties of polymer emulsions - Table 6 : Tensile test values - Table 7 : Properties of high-gloss opaque and transparent paints - Table 8 : Effect of QUV exposure on color parameters of hybrid polymer films - Table 9 : Hardness control results DOI : https://doi.org/10.1007/s11998-023-00767-6 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00767-6.pdf?pdf=button Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=39976 [article]

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