Investigation of the effect of fluorine and silane-containing monomers on waterborne hybrid (alkyd/styrene acrylic) latexes / Nurullah Kartaloglu in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 21, N° 3 (05/2024)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 21, N° 3 (05/2024) . - p. 1067-1084 Titre : Investigation of the effect of fluorine and silane-containing monomers on waterborne hybrid (alkyd/styrene acrylic) latexes Type de document : texte imprimé Auteurs : Nurullah Kartaloglu, Auteur ; Ali Delibas, Auteur Année de publication : 2024 Article en page(s) : p. 1067-1084 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Acides gras 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 (technologie) Formulation (Génie chimique) Huiles et graisses végétales Hydrophobie Latex Matériaux hybrides Mesure Pins et constituants Polymères -- Synthèse Revêtements en phase aqueuse Index. décimale : 667.9 Revêtements et enduits Résumé : Due to the significant importance of waterborne polymers in terms of sustainability, researchers have undertaken the process of transferring alkyd resins into waterborne latex. In this study, two distinct types of alkyd resins were meticulously prepared through the esterification of sustainable sources, namely hemp seed oil (HSO) and pine fatty acid (TOFA), with polyols and dibasic acids. The goal of this research was to synthesize hydrophobic waterborne hybrid polymer emulsions, combining alkyd and styrene acrylic components. This was achieved through a semibatch mini-emulsion polymerization process involving styrene, butyl acrylate, and acrylic acid. The alkyd resins, derived from sustainable sources, were integrated into the polymerization process along with hydrophobic monomers that contained either fluorine or silane groups. Based on the alkyd content, polymer emulsions were examined in three classes: pure polymer emulsions without alkyd (0% alkyd), 10% HSO-based alkyd-containing polymer emulsions (10% HSO-based), and 10% TOFA-based alkyd-polymer emulsions (10% TOFA). Polymer emulsions in each class were first modified with 3% and 6% triethoxyvinyl silane (VTES) and 2,2,2-trifluoroethyl methacrylate (TFEMA) to obtain a total of 12 different modified latexes. The structure of the synthesized latex was characterized by FTIR and 1H-NMR, while the morphology of the latex was examined by AFM, STEM, EDAX, particle size, and zeta potential measurements. The thermal and mechanical properties of the materials were assessed using DSC, TGA, and tensile testings. Lastly, the water contact angle was used to gauge the hydrophobicity of the latexes. The findings revealed that TFEMA and VTES hydrophobic monomers significantly influenced the mechanical, thermal, and hydrophobic properties of hybrid (alkyd/styrene acrylic) polymer emulsions and films. Note de contenu : - EXPERIMENTAL : Materials - Alkyd resins synthesis - Synthesis of hydrophobic waterborne hybrid (alkyd/styrene acrylic) emulsion polymers modified with fluorine and silane-containing monomers - Tests and measurements - RESULTS AND DISCUSSION : Evaluation of TOFA and HSO - Evaluation of waterborne hydrophobic hybrid (alkyd/styrene acrylic) polymer emulsions containing VTES and TFEMA - Table 1 : Chemicals used in the study - Table 2 : Formulation of alkyd resin synthesis - Table 3 : Formulation of hydrophobic waterborne hybrid (alkyd/styrene acrylic) emulsion polymers - Table 4 : Physicochemical properties of hydrophobic hybrid latexes DOI : https://doi.org/10.1007/s11998-023-00873-5 En ligne : https://link.springer.com/content/pdf/10.1007/s11998-023-00873-5.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=41077 [article]

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Synthesis of (Sty-co-BA-AA) latexes including ZnO and TiO2 nanoparticle by miniemulsion polymerization / Ali Delibas in JOURNAL OF COATINGS TECHNOLOGY AND RESEARCH, Vol. 18, N° 3 (05/2021)  

[article]  inJOURNAL OF COATINGS TECHNOLOGY AND RESEARCH > Vol. 18, N° 3 (05/2021) . - p. 717-727 Titre : Synthesis of (Sty-co-BA-AA) latexes including ZnO and TiO2 nanoparticle by miniemulsion polymerization Type de document : texte imprimé Auteurs : Ali Delibas, Auteur Année de publication : 2021 Article en page(s) : p. 717-727 Note générale : Bibliogr. Langues : Américain (ame) Catégories : Caractérisation Jaunissement (défaut) Latex Miniémulsions Nanoparticules Polymérisation en émulsion Revêtements -- Propriétés mécaniques Styrène-co-butylacrylate-acide acrylique Index. décimale : 667.9 Revêtements et enduits Résumé : Herein, it is reported that synthesis of poly(styrene-co-butyl acrylate) latexes containing ZnO and TiO2 nanoparticles was carried out using miniemulsion polymerization. The synthesized latexes and films cast from them were characterized by dynamic light scattering (DLS), X-ray diffraction (XRD), scanning electron microscopy energy dispersive X-ray (SEM-EDAX), transmission electron microscopy (TEM), and thermogravimetric analysis (TGA). Stress–strain and DMA analysis was performed for the mechanical analysis of the films prepared from latexes. The particle sizes of the latexes were about 60 nm for pure latex and latex only containing ZnO and TiO2, while the particle size for latex containing nanoparticle mixture was measured as 120 nm. XRD, SEM-EDAX, and TEM analysis results showed that the nanoparticles were well dispersed in latex. When the mechanical analysis results were compared, latex films including 2% ZnO nanoparticles were found to be stronger. DMA analysis showed that the glass transition temperature (Tg) values of the polymers were between 0 and 10°C and the nanoparticles were not effective in changing the Tg values. Latex films were exposed to 254 nm UV light to determine their yellowing. According to the colorimetric measurement, ZnO nanoparticle-embedded films were found to be more resistant to yellowing. Note de contenu : - EXPERIMENTAL : Materials - Experimental procedure - Characterization - RESULTS AND DISCUSSION : XRD results - TGA results - SEM and TEM results - Mechanical properties of the latex films - Yellowing test of the latex films - Table 1 : Miniemulsion polymerization recipe for nanocomposite latexes - Table 2 : Effect of nanoparticles on SC, zeta potential, and particle size - Table 3 : Stress–strain results of the prepared latex films - Table 4 : Yellowing results of the latex films DOI : https://doi.org/10.1007/s11998-020-00436-y En ligne : https://link.springer.com/content/pdf/10.1007/s11998-020-00436-y.pdf Format de la ressource électronique : Pdf Permalink : https://e-campus.itech.fr/pmb/opac_css/index.php?lvl=notice_display&id=35924 [article]

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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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