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Article Dans Une Revue (Article De Synthèse) European Polymer Journal Année : 2022

3D fabrication of Shape-Memory polymer networks based on coumarin Photo-Dimerization

Alain Graillot

Résumé

Photo-crosslinked shape-memory polymer (SMP) materials were obtained by the copolymerization of methacrylates bearing 2-ethylhexyl plasticizing group (EHMA) and photoactive coumarin unit (CoumMA). The photo-dimerization of coumarin units ensured the crosslinking of P(EHMA-co-CoumMA) and further allowed the fabrication by stereolithography of well-defined butterfly with ribbed wings to illustrate the potential of promising coumarin chemistry in additive fabrication. The influence of dye ratio on the optical and the mechanical properties of the transparent P(EHMA-co-CoumMA) films as well as the shape memory properties of the films in unfolding and twisting deformations were detailed and demonstrate the opportunity of coumarin-bearing photoprintable polymers for 4D printing.
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Dates et versions

hal-04284593 , version 1 (14-11-2023)

Identifiants

Citer

Belkacem Tarek Benkhaled, Kedafi Belkhir, Thomas Brossier, Camille Chatard, Alain Graillot, et al.. 3D fabrication of Shape-Memory polymer networks based on coumarin Photo-Dimerization. European Polymer Journal, 2022, 179, pp.111570. ⟨10.1016/j.eurpolymj.2022.111570⟩. ⟨hal-04284593⟩
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