Pambudi, Galang Bimantara Raka (2018) Sintesis Kitosan Larut Air Dari Limbah Cangkang Kepiting. Undergraduate thesis, Institut Teknologi Sepuluh Nopember.
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Abstract
Sintesis kitosan larut air (WSC) dengan bahan dasar limbah cangkang kepiting telah dilakukan dengan melalui beberapa proses yaitu demineralisasi, deproteinasi, deasetilasi, dan depolimerisasi. Kitosan yang telah dibuat dioptimasi pada suhu 50, 60, 70, 80, 90, 100°C. Hasil optimum didapatkan pada prosentase rendemen WSC pada variasi K90°C. Adapun beberapa uji yang dilakukan pada penelitian yang dilakukan yaitu karakterisasi dengan FT-IR, perhitungan derajat deasetilasi, dan uji kelarutan pada air dan HCl 0,1M selama 1,5 jam. Hasil yang telah didapatkan dari karakterisasi dengan FT-IR pada kitin, kitosan, dan WSC sudah sesuai dengan literatur. Pada perhitungan nilai derajat deasetilasi (DD) kitosan yang didapatkan dengan DD tertinggi pada sampel K90 yaitu 84,36%, sedangkan pada WSC didapatkan nilai DD tertinggi pada sampel variasi K100 yaitu 75,02%. Uji kelarutan yang dilakukan pada sampel WSC berfungsi untuk membuktikan bahwa kitosan berhasil disintesis menjadi WSC. Hasil optimum dari uji kelarutan selama 1,5 jam WSC dalam air yaitu pada sampel K90 yaitu 1,842 g/L dalam suhu ruang dan 1,846 g/L dalam suhu 40°C sedangkan dalam HCl yaitu 1,908 g/L dalam suhu ruang dan 1,952 g/L dalam suhu 40°C pada variasi K100.
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Water soluble chitosan (WSC) from crab shell waste has been synthesized successfully through several processes there are demineralization, deproteination, deacetylation, and depolimeration. Chitin has been optimizied at 50, 60, 70, 80, 90, and 100°C in deacytilation process to made Chitosan. The percentage optimum yield of WSC was obtained at K90°C. The several test conducted on the research are characterization with FT-IR, deacetylation degree calculation, and solubility test with water and weak concentrate acid at room temperature and 40°C in 1,5 hours. The result of spectrum IR from characterization with FT-IR on chitin, chitosan, WSC according to the literature. In the calculation of degrees of deactylation (DD) chitosan obtained the highest DD value of 84,36% at K90 and WSC obtained the highest DD value of 75,02% in variations K100. The solubility test of WSC sample to prove that chitosan is successfully synthesized into WSC. The optimum result of the WSC solubility test in water was for 1,5 hours with solubility 1,842 g/L at room temperature and 1,846 g/L at temperature 40°C in variations WSC K90 and in HCl 0,1 M with solubilty 1,908 g/L at room temperature and 1,952 g/L at temperature 40°C in variations WSC K100.
| Item Type: | Thesis (Undergraduate) |
|---|---|
| Uncontrolled Keywords: | Kata kunci: Cangkang Kepiting, Kitosan, Kitosan Larut Air, Derajat Deasetilasi, Kelarutan |
| Subjects: | Q Science > QD Chemistry > QD75.2 Chemistry, Analytic |
| Divisions: | Faculty of Mathematics and Science > Chemistry > 47201-(S1) Undergraduate Thesis |
| Depositing User: | Galang Bimantara Raka Pambudi |
| Date Deposited: | 16 Jul 2021 00:18 |
| Last Modified: | 16 Jul 2021 00:18 |
| URI: | http://repository.its.ac.id/id/eprint/56722 |
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