A self-healing and recyclable poly(urea-imine) thermoset synthesized from CO₂

Abstract

The synthesis of self-healing and recyclable polymeric materials from renewable CO2 is of great importance in the fields of functional materials and sustainable chemistry. In this work, mechanical robust poly(urea-imine)...

A Review on CO2‐Based Polyureas and Polyurea Hybrids

“…The amino group and aldehyde group of the reactants was maintained equimolar at the start (Scheme 21). [69] OUa was synthesized via the polycondensation reaction of CO 2 with 1,3‐bis(3‐aminopropyl)‐tetramethyldisiloxane (AMM). The mechanical and thermal properties of PUIs could be tuned by varying the OUa/TAEA molar ratio.…”

“… Synthesis of poly(urea‐imine) (PUI) from CO 2 ‐based OUa, terephthalaldehyde (TA) and tris(2‐aminoethyl)amine (TAEA) [69] …”

Closed‐Loop Recycling of Poly(Imine‐Carbonate) Derived from Plastic Waste and Bio‐based Resources

“…Interested in creating closed-loop recycling, we studied and optimized the chemical depolymerization of CL-P(ImC)-TREN to selectively recover the monomeric building blocks, DVEC and TREN (Figures 5A and B). As imine bonds can conveniently be cleaved under acidic conditions, [29,[51][52][53] CL-P(ImC)-TREN was treated with a solution of 0.1 M HCl and THF (v : v = 9 : 1) at room temperature for 2 h under continuous stirring. Within a few minutes, the bulk material started to break, the mixture became turbid, and the formed DVEC precipitated as a fine powder, while TREN HCl remained dissolved in the aqueous mixture.…”

(+)‐Limonene‐Lactam: Synthesis of a Sustainable Monomer for Ring‐Opening Polymerization to Novel, Biobased Polyamides

“…The utilization and functionalization of limonene is therefore a highly researched topic, and remarkable progress regarding limonene‐based polymers like polycarbonates, [ 21,22,23 ] polyurethanes and polyamides, [ 24 ] and polyesters [ 25 ] have already been made. [ 26,27 ]…”

“…The utilization and functionalization of limonene is therefore a highly researched topic, and remarkable progress regarding limonenebased polymers like polycarbonates, [21,22,23] polyurethanes and polyamides, [24] and polyesters [25] have already been made. [26,27] Especially polyamides (PAs) are a very important polymer class with a wide range of applications from consumer goods to highperformance polymers in the technical or biomedical field. [28] PAs are characterized by a good property range: They show favorable mechanical properties even at high temperatures and good chemical resistance.…”