Synthesis of oligoPBAT-bismaleimide OligoPBAT-bismaleimide was synthesized similarly to AMS-maleimide. 6-MHA was first chlorinated by oxalyl chloride to yield 6-MHC, which was then dissolved in a minimal amount of anhydrous chloroform . Then, in a three-necked flame-dried round-bottomed flask under a flux of argon, 5.0 g of vacuum-dried oligoPBAT-diol with an OH content of 1.8 mmol g -1 , including 3 % of OH groups from residual BDO, was dissolved in a minimal amount of anhydrous chloroform, under light reflux at 45 °C. The solution of 6-MHC (1.2 molar equivalents, relative to the ending OH groups of oligoPBAT-diol) in chloroform was then added dropwise to the solution of oligoPBAT-diol and the mixture was stirred for 15 h at 50 °C. At the end of the reaction, methanol was added to trap the unreacted 6-MHC. This mixture was kept under stirring for a supplementary 30 min, precipitated into cold ethanol and then washed twice with ethanol, using centrifugation at 10000 rpm during 10 min with RCF (relative centrifugal force) = 10509 × G. The obtained solid was finally dried at 50 °C under vacuum in an oven, for about 15 hours. OligoPBAT-bismaleimide was recovered as a white solid.