The effect of starch-garlic powder ratio on degradation rate of Gadung starch bioplastic

3rd International Conference on Chemical Engineering Sciences and Applications 2017

Mairiza, L.^1 ; Mariana, M.^1 ; Ramadhany, M.^1 ; Feviyussa, C.A.^1

Department of Chemical Engineering, Faculty of Engineering, Syiah Kuala University, Darussalam, Banda Aceh

23111, Indonesia^1

关键词: Biodegradable plastics;    Casting method;    Degradation rate;    Degradation test;    Environmental problems;    Plastics waste;    Soil burial test;    Starch contents;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/334/1/012085/pdf
DOI  :  10.1088/1757-899X/334/1/012085

来源: IOP

【 摘 要 】

Bioplastic is one of the solutions for environmental problems caused by plastics waste. Utilization of toxic gadung starch in the manufacturing of bioplastic would be as an alternative, due to gadung bulb has high starch content, and it is still not used optimally. This research aimed to learn about the using of gadung starch-mixed with garlic powder of making biodegradable plastic packaging. Also, to observe the duration of degradation, as a level of biodegradability of plastic film produced. The method used making this bioplastic was casting method. The variables used in this study were the ratios of starch and powdered garlic, were 10:0; 8:2; 6:4, and the concentration of garlic powder were 2%; 4%; 6%; and 8 %. The degradation test was done by soil burial test. The results of the soil burial test shown that the film was more rapidly degraded at ratio of 6: 4 compared to the ratio of 8: 2 and 10: 0. The results shown that bioplastic at the starch-garlic powder ratio of 10: 0 was decomposed in 21 days, at the the ratio of 8:2 was 15 days, while at the ratio of 6:4, the plastic film was degraded in the 11 days.