Chlorogenic acid containing bioinspired polyurethanes: Biodegradable medical adhesive materials

Highly adhesive bioinspired polyurethanes (PUs) based on the chlorogenic acid (CLA) were prepared from 4,4′-methylenebis(cyclohexyl isocyanate) (MCI) and polyethylene glycol 200 (PEG 200). The polyurethanes exhibited the lowest glass transition temperature (Tg), improved thermal stability and good adhesive properties. The highest adhesion strength was found as 373.3 ± 47.5 kPa for 10% CLA containing PUs. The polyurethanes were observed to be biodegradable and were in the range of 19-24% for 8 weeks as depending on chlorogenic acid containing of PUs. As a result, prepared biocompatible-adhesive bioinspired polyurethanes are good candidates for medical applications as a tissue adhesive material. (Graphical Abstract).