Isolation and characterization of regenerated cellulose films using microcrystalline cellulose from oil palm empty fruit bunch with an ionic liquid

• Published in: Bioresources Vol. 15; no. 4; pp. 8268 - 8290
• Main Authors: Weerasooriya, P. R. D., Abdul Khalil, H. P. S., Mohd Kaus, Noor Haida, Sohrab Hossain, Md, Hiziroglu, Salim, Nurul Fazita, M. R., Gopakumar, Deepu A., Mohamad Haafiz, M. K.
• Format: Journal Article
• Language: English
• Published: Raleigh North Carolina State University 01.11.2020
• Subjects: Acids; Analytic hierarchy process; Analytical methods; Cellulose; Chlorine; Crystalline cellulose; Degree of crystallinity; Experiments; Fruits; Hydrogen bonds; Ionic liquids; Ions; Lignin; Lignocellulose; Mechanical properties; Morphology; Natural polymers; Opacity; Packaging; Permeability; Physicochemical properties; Polymers; Pulping; Renewable resources; Solvents; Stability analysis; Tensile strength; Thermal stability; Thin films; Water vapor; United States > US
• ISSN: 1930-2126; 1930-2126
• DOI: 10.15376/biores.15.4.8268-8290

There is increasing interest in regenerated cellulose (RC) films for advanced manufacturing applications using natural polymers and renewable materials. In this study, RC films were isolated via solution casting process using microcrystalline cellulose (MCC) and the ionic liquid 1-butyl-3-methylimidazolium chloride ([BMIM]Cl). Initially, MCC was synthesized from oil palm empty fruit bunch using total chlorine-free (TCF) pulping and acid hydrolysis. Effects of MCC on the structures and physicochemical properties of the isolated RC films were determined for 4 wt%, 6.5 wt%, and 9 wt% of MCC at 80 °C. Several analytical methods were employed to evaluate degree of crystallinity, chemical stability, mechanical properties, morphology, opacity, water vapor permeability, and thermal stability of the RC films. The results showed that the addition of 6.5 wt% of MCC yielded the greatest tensile strength. Compared with the RC films with 6.5 wt% of MCC, thermal stability and water vapor permeability slightly increased when the MCC content was 9 wt%. According to the analytic hierarchy process (AHP), 6.5 wt% of MCC was the optimum MCC concentration to mix with [BMIM]Cl to manufacture RC films for packaging applications, while 9 wt% of MCC was ideal for photocatalytic and electrically conductive thin film applications.