CD Tugas Akhir
Pengaruh Gliserin Dan Asam Asetat Pada Pembuatan BioplastikDari Tepung Tapioka Dan Tepung Maizena
Bioplastics are plastics that can be broken down by environmental temperature,
humidity and microorganism activity. Bioplastics can be used like plastic to wrap
fruits. Bioplastics include natural polymers made from plant and animal materials.
Tapioca flour is pure starch obtained from the extraction of cassava milling and is
composed of amylose and amylopectin. Maize flour is flour obtained by grinding
clean and good corn kernels through a process of separating the skin, endosperm,
institutions and tip cap. This research aims to make bioplastics by utilizing tapioca
flour as an adhesive and cornstarch as an efficient thickener. Utilization of tapioca
flour and cornstarch in producing bioplastics in this study was carried out using
the blending method. The variation of the amount of acetic acid is 2 ml, 4 ml and
6 ml, the variation of the amount of glycerin is 2 ml, 4 ml and 6 ml and the weight
of tapioca flour and cornstarch is 6 grams at a temperature of 700C. Bioplastics
are made by mixing 6 grams of tapioca flour and 6 grams of cornstarch, distilled
water 50 ml and heated to a temperature of 700C. Tests carried out are testing
tensile strength, thickness, resistance and biodegradable bioplastics. The resulting
product consists of 9 variants of bioplastics. The bioplastic test results stated that
the best tensile strength was owned by the fourth bioplastic (2.649 MPa), the best
thickness was owned by the ninth bioplastic (0.12 mm), the best resistance was
owned by the eighth bioplastic (46.15%) and the fastest or best degradation time
was owned by third and ninth bioplastics (6 days). The influence of the use of
glycerin is very dominant in the test results but not for the use of acetic acid.
Keywords : acetic acid, bioplastics, glycerin, cornstarch, tapioca flour.
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