Tunable enzymatic biodegradation of poly(butylene succinate): biobased coatings and self-degradable films

Biodegradation of polyesters driven by enzymes is considered as one the most effective way degradation these materials, a to control plastics accumulation in environment. In this study, we present two different strategies tune enzymatic PBS films triggered lipase from Pseudomonas cepacia. Firstly, kinetics was regulated applying multilayer coats polysaccharide alginate and chitosan (Alg/Chi) films. Secondly, self-degradable were prepared embedding lipase-filled particles. For comparison purposes, detailed study neat exposed P. cepacia solution made determine main experimental parameters influencing their solution. The results showed that an increase enzyme concentration increased extent rate At fixed concentration, stirring containing also biodegradation rate. case coated with number Alg/Chi layers spray-assisted LbL subjected experiments solution, found be dependent on protective coating layers. Therefore, biobased constitutes barrier diffusion lipase, thus proving its effectiveness modulating activity function thickness. lipase-embedded beads (employed protect during high-temperature processing), only limited observed amount encapsulated employed too small. Nonetheless, are promising, –indicative capacity enzyme– determined for all samples about 2 orders magnitude lower than previous assays.