Mohan, Pavitra and Yusof, Nor Saadah Mohd and Thomas, Sabu and Abd Rahman, Nor Mas Mira (2024) Ultrasound-Alkali-Assisted Isolation of Cellulose from Coconut Shells. BioResources, 19 (4). pp. 7870-7885. ISSN 1930-2126, DOI https://doi.org/10.15376/biores.19.4.7870-7885.
Full text not available from this repository.Abstract
This research explored the isolation of cellulose from coconut shells using ultrasound. It involved two types of cellulose isolation: alkali and bleached cellulose (ABC) and ultrasound-alkali-assisted isolated cellulose (UAIC). The products were characterized using various techniques, including attenuated total reflection-Fourier transform infrared spectroscopy (ATRFTIR), X-ray diffraction analysis (XRD), thermogravimetric analysis (TGA), and field emission scanning electron microscopy (FESEM). The ATR-FTIR results confirmed the effective removal of lignin and hemicellulose in the ABC and UAIC samples. Field emission scanning electron microscopy analysis revealed the production of micro-sized cellulose. The TGA and XRD results showed improved thermal stability and crystallinity in ABC and UAIC, attributed to the elimination of non-cellulosic constituents. However, the thermal stability and crystallinity of UAIC were lower compared to ABC, likely due to the cavitation effect caused by sonication. The findings suggest that ultrasonication is an efficient and promising method for isolating cellulose.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Higher Education for the Fundamental Research Grant Scheme (FRGS/1/2022/STG04/UM/02/7), Universiti Malaya under Bantuan Khas Penyelidikan/Special BKP (BKP002-2023-KP), RU Grant SATU (ST043-2021) |
| Uncontrolled Keywords: | Cellulose; Ultrasound assisted isolation; Ultrasonication; Alkali treatment; Bleaching |
| Subjects: | Q Science > QD Chemistry S Agriculture > S Agriculture (General) |
| Divisions: | Faculty of Science > Department of Chemistry |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 18 Feb 2025 03:34 |
| Last Modified: | 18 Feb 2025 03:34 |
| URI: | http://eprints.um.edu.my/id/eprint/47372 |
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