Abstract
In this study, an acrylate monomer containing two hydroxyl groups, 2,2-bis(hydroxymethyl)butyl acrylate (HBA), was successfully synthesized by acidic hydrolysis of the monomer precursor, (5-ethyl-2,2-dimethyl-1,3-dioxane-5-yl)methyl acrylate (EDMA), which was prepared by esterification reaction between 2,2-dimethyl-5-ethyl-5-hydroxymethyl-1,3-dioxane and acryloyl chloride. Subsequently, poly(HBA) containing pendant diol group was prepared either by direct reversible addition-fragmentation chain transfer (RAFT) polymerization of HBA or by RAFT polymerization of EDMA, followed by deprotection. The RAFT polymerization of both monomers was performed in dioxane using 2-(ethylthiocarbonothioylthio)-2-methyl propanoic acid (EMP) as the RAFT agent and 2,2′-azobis(isobutyronitrile) (AIBN) as the initiator. Kinetic studies demonstrated that the polymerization process of both monomers followed pseudo first-order kinetics with respect to the monomer concentrations. The molecular weight of the resulting polymer increased linearly with monomer conversion, while a low polydispersity was maintained throughout.
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Financial support from Open Project of Hunan Provincial University Innovation Platform (10K066) and International Joint Research Program of Hunan Province (2010WK2009) is greatly acknowledged.
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Wang, C., Xu, J., Gao, Y. et al. RAFT synthesis of acrylic polymers containing diol or dioxane groups. J Polym Res 19, 9895 (2012). https://doi.org/10.1007/s10965-012-9895-4
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DOI: https://doi.org/10.1007/s10965-012-9895-4