_1671519546 1671519546 Hamid Shirkhanloo sahar.zi67@gmail.com Hamid Shirkhanloo Analytical Methods in Environmental Chemistry Journal AMECJournal 2645-5382 2645-5552 12 30 2022 5 04 10.24200/amecj.v5.i04 http://journal.amecj.com/index.php/AMECJ-01/issue/view/24 Sara H Mutasher Hadi Salman Al-Lami The energy crisis and environmental concerns have increased interest in natural polymers, and the bio-sourced materials field is experiencing rapid growth. A useful alternative to conventional plastic packaging manufactured from fossil fuels is packaging constructed of biodegradable polymers. Consideration has been given to the instrumental methods for examining modifications to the chemical composition and characteristics of modified chitosan. The molecular weight and the kind of plasticizer present in these materials are the two primary variables influencing their usability and performance. This study set out to physically blend chitosan with two different acids, lauric and maleic, to enhance chitosan cast films' physical and mechanical properties. Different plasticizer ratios appeared to have little effect on the various properties of the chitosan cast films. Examining the obtained films by FTIR implies that chitosan's native structure was unchanged. The films prepared had more flexibility and better solubility than those made with un-plasticized chitosan. It was evident from an analysis of the mechanical properties of the films that both acid plasticizers enhanced the mechanical properties of the chitosan. 12 29 2022 43 54 http://creativecommons.org/licenses/by/4.0 10.24200/amecj.v5.i04.209 http://journal.amecj.com/index.php/AMECJ-01/article/view/209 http://journal.amecj.com/index.php/AMECJ-01/article/download/209/454 http://journal.amecj.com/index.php/AMECJ-01/article/download/209/454 http://journal.amecj.com/index.php/AMECJ-01/article/download/209/455