Poly(ester amide)s derived from low-value plant oil as reusable low-temperature tolerant adhesives

Poly(ester amide)s (PEAs) are heterochain polymers consisting of repetitive ester and amide bonds. The development of PEAs derived from renewable biomass has attracted tremendous attention owing to their fascinating applications. In this work, plant oil derived 21-carbon dicarboxylic acid (C21DA) was utilized to achieve highperformance sustainable PEAs with excellent reprocessability. The presence of hydrogen bonding formed by ester, amide, and carboxyl groups can endow PEAs with strong cohesion and interfacial adhesion, which provides great opportunities for PEAs in hot melt adhesive applications. The mechanical properties of PEAs can be systematically manipulated by adjusting the compositions and cross-linking densities. These PEAs are thermally stable and possess extraordinary adhesion behavior, especially under low temperatures. Impressively, such a kind of PEAs shows outstanding tolerance even in liquid nitrogen (-196 degrees C). The combination of renewable low-value plant oil and PEAs can offer new avenues for designing novel bio-based reusable low-temperature tolerant adhesives.

Automated summary

In this work, sustainable high-performance PEAs were prepared using plant oil as a renewable resource. The hydrogen bonding formed by ester, amide, and carboxyl groups in PEAs provides strong cohesion and interfacial adhesion, making them suitable for hot melt adhesive applications. The mechanical properties of PEAs can be manipulated by adjusting their compositions and cross-linking densities. These PEAs are thermally stable and exhibit outstanding adhesion behavior, even at extremely low temperatures such as liquid nitrogen (-196 degrees C). The combination of renewable plant oil and PEAs opens up new possibilities for designing bio-based reusable low-temperature tolerant adhesives.