Issue 2, 2015

Facile synthesis of unsaturated polyester-based double-network gels via chemoselective cross-linking using Michael addition and subsequent UV-initiated radical polymerization

Abstract

Michael addition and UV-initiated radical polymerization of vinyl monomers were used for a one-pot synthesis of polyester-based double-network (DN) gels by chemoselective cross-linking at room temperature. Unsaturated copolyesters containing itaconate and maleate units were prepared via ternary polycondensation of maleic anhydride and itaconic anhydride with 3-methyl-1,5-pentanediol under mild conditions. The addition of a diamine to a mixture of unsaturated copolyester, methyl methacrylate (MMA), and UV-initiator in toluene at room temperature yielded the first network via chemoselective cross-linking of maleate double bonds. This network, containing MMA, was next irradiated under UV-light for 3 h to obtain a polyester/poly(MMA) DN gel with high mechanical strength and shape recovery properties. A poly(ester-co-ether)/poly(acryl amide) DN hydrogel, which swelled with 70 wt% of water after immersion in water, was also synthesized by a similar procedure.

Graphical abstract: Facile synthesis of unsaturated polyester-based double-network gels via chemoselective cross-linking using Michael addition and subsequent UV-initiated radical polymerization

Supplementary files

Article information

Article type
Paper
Submitted
23 Oct 2014
Accepted
20 Nov 2014
First published
20 Nov 2014

RSC Adv., 2015,5, 819-829

Author version available

Facile synthesis of unsaturated polyester-based double-network gels via chemoselective cross-linking using Michael addition and subsequent UV-initiated radical polymerization

T. Tang and A. Takasu, RSC Adv., 2015, 5, 819 DOI: 10.1039/C4RA13020K

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