Maulana, Yogi Irfan and Hidayat, Esa Wahyu Nur (2025) SELULOSA ASETAT DARI BATANG SINGKONG DENGAN PROSES CELLANASE. Undergraduate thesis, UPN Veteran Jawa Timur.
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Abstract
Cassava is one of the food-producing crops in Indonesia, in addition to rice and corn. Increased cassava production will certainly increase the waste generated. Besides being used for seeds through cuttings, cassava stem waste can be used as a material for making particleboard, crafts, briquettes, charcoal, bioethanol, absorbent media, and producing alpha cellulose. Alpha cellulose produced from cassava stems can be used as cellulose acetate. Cellulose acetate is cellulose whose hydroxyl groups are replaced by acetyl groups. Cellulose acetate is used as an adhesive material for topographic films and can also be used in the textile industry, such as paints, and is used in the production of cigarette filters, biodegradable plastics, and membrane production. This research aims to obtain cellulose acetate from cassava stems and find relatively good conditions based on variations in acetylation time and acetic anhydride volume. The process of making cellulose into cellulose acetate is carried out in several stages, namely pre-treatment, cellulose isolation, and acetylation. In the pre-treatment process, cassava stems will undergo size reduction and fiber softening. Next, cellulose isolation is carried out by delignification and bleaching to obtain alpha cellulose. In the acetylation stage, cellulose is first activated with glacial acetic acid before being acetylated with acetic anhydride. The study examines the effect of acetylation time (30, 60, 90, 120, 150 minutes) and the effect of adding volume (10, 12.5, 15, 17.5, 20 ml) on the acetyl content and degree of substitution of cellulose acetate from cassava stems. Based on the research results, relatively good acetyl content and degree of substitution were obtained at a volume of 20 ml and a time of 150 minutes, with an acetyl content of 34.8% and a degree of substitution of 1.987. The successfully synthesized cellulose is classified as cellulose monoacetate, which can be used in the production of plastics and paints.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > TP Chemical technology T Technology > TP Chemical technology > TP155 Chemical engineering |
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| Depositing User: | Yogi Irfan Maulana | ||||||||
| Date Deposited: | 25 Jul 2025 06:59 | ||||||||
| Last Modified: | 28 Jul 2025 02:36 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/40690 |
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