Vanillin-derived amines for bio-based thermosets

Abstract

In the scope of fully bio-based materials development, access to bio-based aromatic amine monomers is one of the main industrial challenges over the coming years.

A perspective approach on the amine reactivity and the hydrogen bonds effect on epoxy-amine systems

“…In our previous works, 8,9 we noted that the presence of H bonds increased drastically the viscosity and the reactivity of hardener, and they also reduced the macroscopic deformations of the final materials. The observation of H bonds are described in polymer chemistry, such as in polyamide (PA), 10 polyurethane (PU) and non-isocyanate polyurethane (NIPU), 11,12 benzoxazine, 13,14 and epoxy-amine thermosets.…”

“…Our team has recently developed new efficient bio-based amine hardeners, by a direct amination method of epoxy monomers using aqueous ammonia solution. 8,9 These new hardeners showed high reactivity but also high viscosity due to the presence of many H bond sites in their structures. During these works, we realized that there was a lack of knowledge concerning the amine reactivity and the influence of H bonds in the epoxy-amine reaction.…”

Monitoring the structure–reactivity relationship in epoxidized perilla and safflower oil thermosetting resins

“…[1][2][3][4] Vegetable oils (VOs) as raw materials are considered to be some of the most promising bioresources because of their availability, advantageous costs, and especially their wide variety of chemical transformations. 2,[5][6][7][8][9][10] One common strategy to obtain polymeric materials from VOs is the polymerization of the CvC double bonds on their backbone. Another approach is based on their functionalization.…”

New Reactive Isoeugenol Based Phosphate Flame Retardant: Toward Green Epoxy Resins

“…Thus, in the view of decreasing the environmental impact, saving petroleum resources and replacing toxic BPA for the synthesis of epoxy, bio-based thermosets are widely studied. During the last decades many research works have therefore been dedicated to the specific domain of bio-based epoxy thermosets pointing out the potential of rosin, 4 cardanol, 5 iso-eugenol, 6,7 eugenol, [8][9][10][11][12] , vegetable oil, 13 modified lignin, [14][15][16] vanillin, [17][18][19] terpene derivatives, 20 daidzein, 21 ... to replace DGEBA epoxy monomer. Among the most promising feedstocks to replace BPA, building blocks derived from lignin, have been particularly pointed out.…”