The effect of plasticizer on the development of chitosan-based bioplastic

• Main Authors: Lusiana, Retno Ariadi, Suseno, Ahmad, Sa’adah, Noer Laely
• Format: Conference Proceeding
• Language: English
• Subjects: Absorption; Biodegradability; Bioplastics; Carrageenan; Chitosan; Citric acid; Contact angle; Crosslinking; Functional groups; Glycerol; Hydrophilicity; Plasticizers; Soil porosity; Swelling; Thickness; Thin films; Vapor resistance; Water vapor
• ISSN: 0094-243X; 1551-7616
• DOI: 10.1063/5.0103712

Bioplastics are plastics derived from materials that can be decomposed by nature. A series of bioplastics based on chitosan and modified chitosan have been produced, namely chitosan thin film (C) citric acid cross-linked chitosan (CCA), chitosan-carrageenan/PVA (CKP), chitosan-carrageenan/PVA/Glycerol (CKPG), CCA-Carrageenan/PVA (CCAKP), and CCA-carrageenan/PVA/Glycerol (CCAKPG).The results of the functional group characterization showed that the cross-link modification reaction of citric acid and glycerol plasticizer had been successfully carried out on chitosan to produce CCA, CCAKP, CCAKPG and CKPG thin films. The addition of citric acid asa crosslinker and glycerol as plasticizer affects the physicochemical properties of bioplastic thin films, the addition of these two materials causes an increase in the value of thickness and weight, porosity, water vapor absorption, swelling, pH resistance and thin film biodegradability, but decreases the contact angle value. hydrophilicity). The optimal composition of the best bioplastics was obtained from CKPG thin films with test results of weight 0.042 grams, thickness 0.00076 mm, porosity 57.4%, contact angle (hydrophilicity) 38.1°, water vapor absorption 110.5%, swelling 134 %, resistant to pH range 5-11 and the ability to be degraded for 98 days in the soil.