Damayanti, Aulia Putri (2026) PENGARUH SELULOSA ECENG GONDOK DAN PATI TONGKOL JAGUNG PADA KARAKTERISTIK BIOPLASTIK. Undergraduate thesis, UPN "Veteran" Jawa Timur.
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Abstract
The accumulation of conventional plastic waste has encouraged the development of environmentally friendly bioplastics from renewable resources. This study utilized cellulose extracted from water hyacinth (*Eichhornia crassipes*) and starch from sweet corn cobs as raw materials for bioplastic production. The objectives were to evaluate the effects of the cellulose-to-starch ratio and glycerol content on the properties of bioplastics and to assess their compliance with the Japanese Industrial Standards (JIS). The results showed that increasing the cellulose content improved tensile strength but reduced elongation and water absorption, whereas higher glycerol content increased elongation, water absorption, and biodegradability while decreasing tensile strength. The highest tensile strength (9.51 MPa) was obtained at a cellulose-to-starch ratio of 1:1 with 0.5 mL glycerol, while the highest elongation (50.09%) and water absorption (48.97%) were achieved at a ratio of 0.2:1 with 1.5 mL glycerol. The maximum biodegradability reached 68%, and all bioplastic samples met the JIS requirements. The optimum composition was a 1:1 cellulose-to-starch ratio with 0.5 mL glycerol, producing balanced mechanical and physical properties.
| Item Type: | Thesis (Undergraduate) | ||||||||
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| Subjects: | T Technology > TP Chemical technology | ||||||||
| Divisions: | Faculty of Engineering > Departement of Chemical Engineering | ||||||||
| Depositing User: | Aulia Putri Damayanti | ||||||||
| Date Deposited: | 24 Jul 2026 02:45 | ||||||||
| Last Modified: | 24 Jul 2026 06:17 | ||||||||
| URI: | https://repository.upnjatim.ac.id/id/eprint/57732 |
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