Optimum Volume Ratio of Sorbitol and Glycerol as Plasticizer on Bioplastic from Tapioca Starch

Asianov, Yochi and -, Hamid Abdillah, S.T., M.T (2019) Optimum Volume Ratio of Sorbitol and Glycerol as Plasticizer on Bioplastic from Tapioca Starch. Skripsi thesis, Universitas Muhammadiyah Surakarta.

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Abstract

Plastic demand worldwide continues to increase, almost every product uses plastic as packaging. Due to non-biodegradable nature they cause hazardous negative impact on the environment. Thus, it takes an alternative for managing plastic waste on earth by finding eco-friendly alternative to plastics. This ecofriendly alternative is bioplastics, which are disposed in environment and can easily degrade through the enzymatic actions of microorganisms. Today starch based bioplastic dominates 66% of the global bioplastics market. Starch based bioplastic is made by gelatinizing starch. For tapioca starch, a common name for starch extracted from cassava, gelatinization temperature is quite low, only about 52-64oC. To obtain a flexible starch based bioplastic, sorbitol and glycerol are added as plasticizers. The purpose of this study was to determine the optimum composition of the volume ratio of plasticizers and tapioca starch to produce bioplastics with good characteristics. The results obtained are in the form of transparent bioplastic sheets. After the mechanical properties were tested the most optimum results were obtained at 10 grams of tapioca starch and volume ratio of sorbitol and glycerol is (7:3.5) ml or 2:1. With the value of 1.2MPa tensile strength test, 50% elongation test, 39.22% water absorption test and biodegradation test showed that the sample was 100% degraded within 18 days.

Item Type:	Karya ilmiah (Skripsi)
Uncontrolled Keywords:	bioplastic, tapioca starch, sorbitol, glycerol
Subjects:	T Technology > TP Chemical technology T Technology > TS Manufactures
Divisions:	Fakultas Teknik > Teknik Kimia
Depositing User:	YOCHI ASIANOV
Date Deposited:	22 Aug 2019 03:24
Last Modified:	22 Aug 2019 03:24
URI:	http://eprints.ums.ac.id/id/eprint/76769

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