Aldehyde functional monomer as efficient cross-linkable comonomer with biobased phenols in acrylic coatings |
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| Affiliation: | 1. Department of Chemistry and Biochemistry, North Dakota State University, Fargo, ND 58108, USA;2. Gebze Technical University, Institute of Nanotechnology, Gebze, Kocaeli 41400, Turkey;1. Ningbo Institute of Materials Technology and Engineering, Chinese Academy of Sciences, Ningbo, Zhejiang 315201, PR China;2. University of Chinese Academy of Sciences, Beijing 100049, PR China;3. College of Packaging and Materials Engineering, Hunan University of Technology, Zhuzhou 412007, PR China;1. Natural Products & Green Chemistry Division, CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, Gujarat, India;2. Academy of Scientific & Innovative Research (AcSIR), CSIR-Central Salt and Marine Chemicals Research Institute, G. B. Marg, Bhavnagar 364002, Gujarat, India |
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| Abstract: | Acrylic–styrenic coatings bearing reactive aldehyde functions were synthesized by copolymerization of vinylbenzaldehyde with methyl methacrylate, butyl acrylate and styrene comonomers. These polymers were cross-linked by phenol-aldehyde reaction with catechin, a natural and non-toxic phenolic compound. First, model studies confirmed that aldehyde functions on the polymer chain remain reactive toward phenolic compounds. Then, acrylic–styrenic oligomers were synthesized with different aldehyde function concentrations from 0 to 6%w and, tuning butylacrylate composition, with different glass transition temperatures for coating applications. Lastly, after screening those two parameters, the analytical tests of the cured coatings confirmed that this alternative cross-linking system gives a high level of performance with high cross-linking degree, high thermal stability, good adhesion properties and excellent impact resistance. |
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| Keywords: | Aldehyde-containing polymers Phenolic cross-linking Natural phenol Acrylic coatings Cross-linking monomer |
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