Rahadian Zainul, Yonss Mbrook Albadn, Esam Bashir Yahya, Salim Manoharadas, Nur Izzaati Saharudin, H.P.S. Abdul Khalil, Mohammad Rizwan Khan, Mohamed Jaber
In this study, we employed supercritical carbon dioxide (scCO2) treatment under varying conditions: low-pressure treatment at 30 MPa and high temperature at 80 °C (LPHT group) and high-pressure treatment at 60 MPa and low temperature at 50 °C (HPLT group) for nanocellulose isolation. The scCO2 treatment resulted in smaller particle sizes and enhanced crys-tallinity. Notably, HPLT exhibited superior efficiency compared to LPHT treatment. Utilizing temperatures and pressures above the critical point effectively penetrated natural fibers, reducing nanocellulose particle sizes. Moreover, high-pressure and low-temperature nanocellulose demonstrated the highest crystallinity and negative zeta potential values (78.2% and –32.4±4.01 mV), surpassing those of the low-pressure and high-temperature group (77.9% and 26.0±2.34 mV) and control (77.3% and 25.9±3.13 mV). The concentration of nanocellulose significantly impacted the porosity, pore size, and water absorption of the bioaerogel scaffolds, indicating the potential for sustainable and environmentally friendly approaches in material fabrication for diverse applications. © BME-PT.
Department of Chemistry, Faculty of Mathematics and Natural Sciences, Universitas Negeri Padang, Indonesia; Bioresource Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang, 11800, Malaysia; Bioprocess Technology Division, School of Industrial Technology, Universiti Sains Malaysia, Penang, 11800, Malaysia; Green Biopolymer, Coatings and Packaging Cluster, School of Industrial Technology, Universiti Sains Malaysia, Penang, 11800, Malaysia; Department of Botany and Microbiology, College of Science, King Saud University, P.O. BOX 2454, Riyadh, Saudi Arabia; Department of Chemistry, College of Science, King Saud University, Riyadh, 11451, Saudi Arabia; Department of Mathematical Science, College of Engineering and Science, Florida Institute of Technology, United States
