Putri, Fildzah Syaflia (2024) Pembuatan Plastik Biodegradable Berbahan Dasar Pati Dari Limbah Kulit Pisang Cavendish Dengan Penguat Kitosan Dan Plasticizer Gliserol. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
The increasing public demand for plastic products has resulted in the accumulation of plastic waste in accordance with technological and industrial developments. The use of biodegradable is one of the strategies to overcome this. Bioplastics are made from natural materials that are degraded by microorganisms, making them more environmentally friendly. Starch is often used as a raw material in the production of bioplastics. Glycerin and chitosan are used as bioplastic reinforcement materials. add 4grams of starch, dissolve in 150 ml of water at 70°C. Weigh chitosan (2.5,3,3.5,4,4.5%) and dissolve with 1% acetic acid until homogeneous. Mix with starch and heat at 60°C. Add glycerol (5,10,15,20,25%) and stir for 1 hour at 60°C, 300 rpm. Pour into molds, dry in a 60°C oven. Remove from mold and dry for 2-3 days at room temperature. Bioplastics have a thickness of about 0.15 mm, the thickness of which exceeds the standard affects water resistance and mechanical properties. Chitosan concentration affects tensile strength, but excessive addition makes bioplastics brittle. Glycerol can increase the percentage of elongation, but excessive composition makes bioplastics sticky and easily torn. Chitosan can reduce percent biodegradation due to antimicrobials. Excess glycerol can accelerate water absorption. Inhomogeneous mixtures of materials affect less smooth surfaces. Bioplastics with the best tensile strength and elongation values and can be applied to chitosan concentrations of 4 gr and glycerol plasticizers of 15 ml. Likewise in biodegradation and water absorption tests. Because the composition is in accordance with SNI 7188.9: 2016 where a strong tensile value of 30.28 was obtained, an elongation value of 80%, a degrability value of 82.84 on the 7th day, and a water absorption value of 1.51% so as to obtain a hydrophobicity value of 98.5%
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > TA Engineering (General). Civil engineering (General) | ||||||||
| Divisions: | Faculty of Engineering > Departement of Chemical Engineering | ||||||||
| Depositing User: | Fildzah Syaflia Putri | ||||||||
| Date Deposited: | 13 Dec 2024 07:34 | ||||||||
| Last Modified: | 13 Dec 2024 07:34 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/32942 |
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