Fauziah, Tuti Ramadhani (2019) Pemodelan Dan Optimasi Penambahan Gliserol Dan Kitosan Terhadap Karakteristik Fisik Plastik Biodegradable Berbahan Dasar Umbi Garut (Marantha Arundinacea L) Menggunakan Response Surface Methodology. Sarjana thesis, Universitas Brawijaya.
Abstract
Sampah plastik dapat menimbulkan berbagai macam masalah mulai dari penyakit hingga permasalahan lingkungan, karena plastik sulit terdegradasi oleh mikroba dalam tanah. Salah satu cara untuk mengurangi sampah plastik yang tidak ramah lingkungan adalah mengembangkan bahan plastik biodegradable (bioplastik) yang dapat dapat dibuat dari pati atau tumbuhan yang mengandung selulosa yang tinggi contohnya tanaman garut (Marantha arundinacea L). Penambahan kitosan mampu meningkatkan rapat massa bioplastik dan menyebabkan jumlah air yang terserap semakin sedikit. Semakin besar presentase kitosan maka nilai kuat tarik akan semakin kuat dan sulit untuk diputus karena memerlukan energi yang besar. Tujuan penelitian ini adalah mencari kombinasi penambahan gliserol dan kitosan untuk mengetahui kuat tarik dan elongasi yang optimal serta mengetahui hasil uji biodegradasi terhadap bioplastik hasil validasi. Metode penelitian yang digunakan yakni Response Surface Methodology pada pembuatan bioplastik berbahan dasar umbi garut dengan variasi penambahan gliserol sebanyak 1.5,viii 2.5, dan 3,5 g serta variasi penambahan kitosan sebanyak 1, 2, dan 3 g. Dari penelitian tersebut didapatkan variasi paling optimum terletak pada penambahan gliserol sebanyak 2.5 g dan penambahan kitosan sebanyak 2 g. Adapun hasil dari penelitian ini yakni bahwa semakin tinggi penambahan gliserol dan kitosan maka kuat tarik dan elongasi juga semakin besar kemudian menurun apabila sudah mencapai titik optimum. Hasil validasi menggunakan tiga sampel pengujian menghasilkan rata-rata kuat tarik sebesar 95,728 Mpa dan rata-rata elongasi sebesar 11,430%. Hasil uji biodegradasi juga menunjukkan bahwa bioplastik terdegradasi oleh bakteri yang terdapat pada EM4 ditandai dengan penurunan massa dan meleburnya bioplastik
English Abstract
Plastic waste can cause various kinds of problems ranging from diseases to environmental problems, because plastic is difficult to be degraded by microbes in the soil. One way to reduce plastic waste that is not environmentally friendly is to develop biodegradable plastic materials (bioplastics) that can be made from starch or plants that contain high cellulose, for example arrowroot (Marantha arundinacea L). The addition of chitosan can increase the density of the bioplastic mass and cause the amount of water absorbed to decrease. The greater the percentage of chitosan, the tensile strength value will be stronger and harder to break because it requires a lot of energy. The purpose of this study is to find a combination of the addition of glycerol and chitosan to determine the optimal tensile strength and elongation and to find out the results of the biodegradation test on the validated bioplastics. The research method used is Response Surface Methodology in the manufacture of bioplastics based on arrowroot tubers with variations in the addition of glycerol as muchx as 1.5, 2.5, and 3.5 g and variations in the addition of chitosan as much as 1, 2, and 3 g. From the research, it was found that the most optimum variation lies in the addition of 2.5 g glycerol and the addition of 2 g chitosan. The results of this study are that the higher the addition of glycerol and chitosan, the greater the tensile and elongation strength and then decrease when it reaches the optimum point. The results of validation using three test samples produced an average tensile strength of 95.728 MPa and an average of elongation of 11.430%. Biodegradation test results also showed that bioplastics degraded by bacteria contained in EM4 were characterized by a decrease in mass and bioplastic fusion.
Other obstract
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| Item Type: | Thesis (Sarjana) |
|---|---|
| Identification Number: | SKR/FTP/2019/90/052002313 |
| Uncontrolled Keywords: | Biodegradasi, Bioplastik, Elongasi, Kuat Tarik, Umbi Garut, Response Surface Methodology, Arrowroot, Biodegradation, Bioplastic, Elongation, Response Surface Methodology, Tensile Strength |
| Subjects: | 600 Technology (Applied sciences) > 620 Engineering and allied operations > 620.1 Engineering mechanics and materials > 620.19 Other engineering materials > 620.197 Organic fibrous materials |
| Divisions: | Fakultas Teknologi Pertanian > Keteknikan Pertanian |
| Depositing User: | Nur Cholis |
| Date Deposited: | 24 Aug 2020 07:34 |
| Last Modified: | 21 Oct 2021 07:36 |
| URI: | http://repository.ub.ac.id/id/eprint/181568 |
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