The effect of combination of sugar palm fruit, carrageenan, and citric acid on mechanical properties of biodegradable film

• Published in: Journal of physics. Conference series 2017-11, Vol.909 (1), p.12085
• Main Authors: Rinanda, S A, Nastabiq, M, Raharjo, S H, Hayati, S K, Yaqin, M A, Ratnawati
• Format: Article
• Language: English
• Subjects: Acids; Biodegradability; Carrageenan; Citric acid; Elongation; Film thickness; Mechanical properties; Physics; Polysaccharides; Tensile strength; Thermal analysis
• ISSN: 1742-6588; 1742-6596
• DOI: 10.1088/1742-6596/909/1/012085

Biodegradable film is a type of plastic material that can be degraded naturally and is usually made of organic material. The material commonly used is polysaccharides. The purpose of this study is to observe the effect of the combination of sugar palm fruit, carrageenan, and citric acid (CA) on the mechanical properties of the biodegradable films, such as tensile strength, elongation and film thickness. The experiment begins with dissolving the sugar palm fruit porridge and carrageenan with ratios of 1:0, 3:1, 2:1, 1:1 in water. The mixture was heated using a heater and magnetic stirrer at 80° C for 10 minutes. Glycerol and citric acid (CA) were added to the solution and stirred for 5 minutes. Each film solution was printed on a modified acrylic and, dried for 18 hours in an oven at 55° C. The formed film layer was then removed from the acrylic mold and inserted in a desiccatorsat 23° C for 1 hour. Then the film analyzed for its tensile strength, elongation using Dynamic Mechanical Thermal Analysis (DMTA), and thickness. The optimum result shown by sugar palm fruit and carrageenan ratio of 1:1 with 1% citric acid (CA).