Chitosan and chitosan-nanoparticles were combined to prepare biobased and unplasticized film blends displaying antimicrobial activity. Nanosized chitosans obtained by sonication for 5. 15. or 30 min were combined with chitosan at 3:7. https://www.ealisboa.com/top-offer-Birkenstock-Arizona-Eva-Beetroot-Purple-best-save/