ELVINA TRIYANI, ELVINA and CUT NADIFA ANNISA EL QAHAR, NADIFA (2024) SINTESIS CARBOXYMETHYL CELLULOSE (CMC) DARI SELULOSA BAKTERI (NATA DE COCO) MENGGUNAKAN REAKTOR MICROWAVE. S1 thesis, Fakultas Teknik Universitas Sultan Ageng Tirtayasa.
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Abstract
Carboxymethyl Cellulose (CMC) is a cellulose derivative obtained from the process of exchanging cellulose hydroxyl groups with carboxyl groups. The conventional CMC manufacturing process has a slow reaction rate so that technological developments are needed to speed up the reaction rate, namely by using a reactor microwave. The purpose of this study is to obtain the optimum conditions for the synthesis of CMC from bacterial cellulose (nata de coco) using a reactor microwave. CMC is widely applied in the industrial world as an emulsion stabilizer, stabilizer, and thickener. The methods used in this study were alkalization and carboxymethylation with various concentrations of NaOH solutions of 10%, 20% and 30%, and reaction times of 10, 20, 30 and 60 minutes. Optimum conditions at the reaction temperature of 50OC was obtained at a concentration of 30% NaOH and a reaction time of 60 minutes with a value of percentage degree of substitution of 93.80%. Heating with the help of microwaves is more controlled when compared to conventional heating because it can speed up the reaction time.
| Item Type: | Thesis (S1) | ||||||
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| Additional Information: | Carboxymethyl Cellulose (CMC) merupakan turunan selulosa yang diperoleh dari proses pertukaran antara gugus hidroksil selulosa dengan gugus karboksil. Proses pembuatan CMC secara konvensional memiliki laju reaksi yang lambat sehingga dibutuhkan perkembangan teknologi yang dapat mempercepat laju reaksi yaitu dengan penggunaan reaktor microwave. Tujuan dari penelitian ini adalah untuk mendapatkan kondisi optimum pada proses sintesis CMC dari selulosa bakteri (nata de coco) menggunakan reaktor microwave. CMC banyak diaplikasikan dalam dunia industri sebagai penstabil emulsi, stabilitator, dan pengental. Metode yang digunakan pada penelitian ini adalah alkalisasi dan karboksimetilasi dengan variasi konsentrasi larutan NaOH sebesar 10%, 20%, dan 30%, serta waktu reaksi selama 10, 20, 30, dan 60 menit. Kondisi optimum proses sintesis CMC dengan suhu reaksi sebesar 50oC diperoleh pada konsentrasi NaOH sebesar 30% dan waktu reaksi selama 60 menit dengan persentase derajat subsitusi sebesar 93,80%. Pemanasan dengan bantuan gelombang mikro lebih terkontrol jika dibandingkan dengan pemanasan konvensional karena dapat mempercepat waktu reaksi. | ||||||
| Subjects: | Q Science > Q Science (General) Q Science > QD Chemistry Q Science > QR Microbiology |
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| Divisions: | 03-Fakultas Teknik 03-Fakultas Teknik > 24201-Jurusan Teknik Kimia |
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| Depositing User: | Elvina Triyani Elvina Triyani | ||||||
| Date Deposited: | 16 Jul 2024 11:41 | ||||||
| Last Modified: | 16 Jul 2024 11:41 | ||||||
| URI: | http://eprints.untirta.ac.id/id/eprint/38552 |
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