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Development of Regenerated Cellulose/Citric Acid Films with Ionic Liquids |
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| Authors: | Soheilmoghaddam Farhad Sharifzadeh Ghorbanali Adelnia Hossein Wahit Mat Uzir |
| Institution: | 1.Tissue Engineering and Microfluidic Laboratory, Australian Institute for Bioengineering and Nanotechnology, The University of Queensland, Corner of Cooper and College Road, Queensland, 4072, Brisbane, Australia ;2.Department of Polymer Engineering, Faculty of Chemical Engineering, Universiti Teknologi Malaysia (UTM), 81310, Johor, Malaysia ;3.Australian Institute for Bioengineering and Nanotechnology, University of Queensland, Brisbane, Australia ;4.Center for Composites, Universiti Teknologi Malaysia (UTM), Johor, 81310, Skudai, Malaysia ; |
| Abstract: | Nowadays, the importance of green and biodegradable plastics as viable substitutes for non-degradable petroleum-based materials is felt more than ever. Regenerated cellulose (RC) as a potential candidate suffers from poor processability and inferior properties, limiting its wide applications. In this study, it is demonstrated that citric acid (CA) enhances physical, mechanical, and thermal properties of RC films, due to RC-citric acid compatibility. 1-ethyl-3-methylimidazolium chloride (EMIMCl) as a green ionic liquid was employed for the processing of RC. The optimum properties in terms of thermal stability, mechanical strength, contact angle, water uptake, and oxygen permeability were achieved at 10 wt% of CA. However, further incorporation of CA adversely affected the film properties. This behaviour was explained by the crosslinking and plasticizing effects of CA. Furthermore, in vitro cytotoxicity test demonstrated that RC/CA films are cytocompatible, suggesting the potential advantage of using these biopolymeric films for biomaterial and biological applications. |
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