Akademik Veri Yönetim Sistemi
Journal of Coatings Technology and Research, cilt.21, sa.3, ss.1067-1084, 2024 (SCI-Expanded)
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. Graphical abstract: (Figure presented.).