Bioplastic Based on Taro Starch Modified Polyvinyl Alcohol and Eggshell (Starch-PVA-CT) with Degradability Study

Siti Qomariah; Intan Syahbanu; Puji Ardiningsih

doi:10.30870/educhemia.v7i2.14660

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Bioplastic Based on Taro Starch Modified Polyvinyl Alcohol and Eggshell (Starch-PVA-CT) with Degradability Study

Siti Qomariah Intan Syahbanu Puji Ardiningsih

Year: 2022 Journal: EduChemia (Jurnal Kimia dan Pendidikan) Vol: 7 (2)Pages: 223-223 Publisher: Sultan Ageng Tirtayasa University

DOI: 10.30870/educhemia.v7i2.14660

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Abstract

Taro (Colocasia esculenta L. Schott) was potentially a raw material in the fabrication of bioplastic because of its biodegradability properties. Egg shells can be used as a filler in bioplastics because of their rich in calcium carbonate (CaCO3). This study aims to examine eggshell addition to starch-PVA-CT bioplastic properties. Taro tuber and eggshell were extracted first to obtain taro starch and calcium carbonate. Obtained products were incorporated with PVA, glycerol, and citric acid to produce bioplastics. Characteristic tests in this study included functional group analysis, hydrophilicity, mechanical properties, and degradation study in rivers. The taro starch obtained from this study was 4.8% from 900 g of taro tubers. Functional group analysis of bioplastics showed the presence of functional groups O-H, C-H, C-O ester, and C=O carbonyl. The hydrophilicity test showed the best percentage of water resistance in CL PVA/starch bioplastic (50% CT), and the decomposition in the river water environment reached 82%. The test results in this study showed that the best variation was in CL PVA/starch bioplastic (25% CT) with a tensile strength value of 2.05 Mpa and elongation at a break of 4%. These results meet the standards of SNI 7188.7:2016.

Keywords:

Bioplastic Starch Polyvinyl alcohol Biodegradation Calcium carbonate Citric acid Food science Ultimate tensile strength Eggshell Chemistry Materials science Composite material Waste management Organic chemistry Biology

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Coastal Management and Development

Physical Sciences → Environmental Science → Management, Monitoring, Policy and Law

Waste Management and Recycling

Physical Sciences → Environmental Science → Industrial and Manufacturing Engineering

Bioplastic Based on Taro Starch Modified Polyvinyl Alcohol and Eggshell (Starch-PVA-CT) with Degradability Study

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