Teo, Shao Hui and Ching, Yern Chee and Fahmi, Mochamad Zakki and Lee, Hwei Voon (2023) Surface Functionalization of Sugarcane-Bagasse-Derived Cellulose Nanocrystal for Pickering Emulsion Gel: Microstructural Properties and Stability Efficiency. Gels, 9 (9). ISSN 2310-2861, DOI https://doi.org/10.3390/gels9090734.
Full text not available from this repository.Abstract
An environmentally friendly Pickering stabilizer was developed by upcycling sugarcane bagasse (SCB) into a cellulose nanocrystal (CNC), which was subjected to surface modification by using quaternary ammonium compound to enhance its amphiphilic characteristics. The changes in microstructural properties of modified cellulose nanocrystal (m-CNC), such as surface functional group, thermal stability, surface morphology, elemental composition, and particle size distribution were investigated. Results indicated the success of quaternary ammonium compound grafting with the presence of a trimethyl-alkyl chain on the cellulose structure, while the m-CNC preserves the needle-like nanoparticles in length of similar to 534 nm and width of similar to 20 nm. The colloidal profile of m-CNC-stabilized oil-water emulsion gels with different concentrations of m-CNC (1-5 wt%), and oil:water (O:W) ratios (3:7, 5:5, 7:3) were examined. The emulsion gel stability study indicated that the optimal concentration of m-CNC (3 wt%) was able to stabilize all the emulsion gels at different O:W ratios with an emulsion index of >80% for 3 months. It is the minimum concentration of m-CNC to form a robust colloidal network around the small oil droplets, leading to the formation of stable emulsion gels. The emulsion gel with O:W ratio (3:7) with 3 wt% of m-CNC rendered the best m-CNC-oil-droplets dispersion. The m-CNC effectively retained the size of oil droplets (<10 mu m for 3 months storage) against coalescence and creaming by creating a steric barrier between the two immiscible phases. Furthermore, the emulsion gel exhibited the highest viscosity and storage modulus which was able to prevent creaming or sedimentation of the emulsion gels.
| Item Type: | Article |
|---|---|
| Funders: | Ministry of Higher Education (MOHE),Malaysia-Prototype Development Research Grant Scheme (PRGS/1/2020/STG05/UM/02/1), Global ENVDK Sdn. Bhd. (PV032-2023) |
| Uncontrolled Keywords: | biomass; nanocellulose; stearyltrimethylammonium chloride; surface modification; dispersion-adsorption; colloidal stability; rheology analysis |
| Subjects: | Q Science > QD Chemistry T Technology > TP Chemical technology |
| Divisions: | Faculty of Engineering Faculty of Engineering > Department of Chemical Engineering Deputy Vice Chancellor (Research & Innovation) Office > Nanotechnology & Catalysis Research Centre |
| Depositing User: | Ms. Juhaida Abd Rahim |
| Date Deposited: | 20 Aug 2025 07:50 |
| Last Modified: | 20 Aug 2025 07:50 |
| URI: | http://eprints.um.edu.my/id/eprint/50668 |
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