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Polymers 2018, 10(5), 488; https://doi.org/10.3390/polym10050488

Fructose-Based Acrylic Copolymers by Emulsion Polymerization

POLYMAT, University of the Basque Country UPV/EHU, 20018 Donostia-San Sebastián, Spain
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Received: 12 March 2018 / Revised: 26 April 2018 / Accepted: 27 April 2018 / Published: 2 May 2018
(This article belongs to the Special Issue Emulsion Polymerization)
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Abstract

The exploration of a renewable resource for the preparation of waterborne copolymers was conducted. Low molar mass sugar resources were selected for their wide availability. A fructose-based monomer (MF) bearing a methacrylate radically polymerizable group was successfully synthesized. The latter was shown to be able to homopolymerize in emulsion. The high Tg of the resulting polymer (about 115 °C) makes it of particular interest for adhesive and coating applications where hard materials are necessary to ensure valuable properties. As a result, its incorporation in waterborne acrylic containing formulations as an equivalent to petrochemical-based methyl methacrylate was investigated. It was found that the bio-based monomer exhibited similar behavior to that of common methacrylates, as shown by polymerization kinetics and particle size evolution. Furthermore, the homogeneous incorporation of the sugar units into the acrylate chains was confirmed by a unique glass transition temperature in differential scanning calorimeter (DSC). The potential of MF for the production of waterborne copolymers was greatly valued by the successful increase of formulation solids content up to 45 wt %. Interestingly, polymer insolubility in tetrahydrofurane increased with time due to further reactions occurring in storage. Most likely, the partial deprotection of sugar units was the reason for the creation of hydrogen bonding and, thus, physically insoluble entangled chains. This behavior highlights opportunities to make use of hydroxyl groups either for further functionalization or, eventually, for achieving enhanced adhesion on casted substrates. View Full-Text
Keywords: fructose; monosaccharide; carbohydrates; renewable resources; emulsion polymerization fructose; monosaccharide; carbohydrates; renewable resources; emulsion polymerization
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited (CC BY 4.0).

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Desport, J.S.; Moreno, M.; Barandiaran, M.J. Fructose-Based Acrylic Copolymers by Emulsion Polymerization. Polymers 2018, 10, 488.

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