Synthesis of a novel organosoluble, biocompatible, and antibacterial chitosan derivative for biomedical applications

Rizwan, Muhammad and Yahya, Rosiyah and Hassan, Aziz and Yar, Muhammad and Omar, Ros Anita and Azari, Pedram and Azzahari, Ahmad Danial and Selvanathan, Vidhya and Al-Maleki, Anis Rageh and Venkatraman, Gopinath (2017) Synthesis of a novel organosoluble, biocompatible, and antibacterial chitosan derivative for biomedical applications. Journal of Applied Polymer Science, 135 (9). p. 45905. ISSN 0021-8995

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Electrospun materials have a number of applications in the tissue engineering field. However, the limited solubility of chitosan (CS), especially in organic solvents, makes its electrospinning with other synthetic organosoluble polymers impossible. In this article, we report the synthesis of a novel organosoluble derivative of CS through the application of a simple synthetic methodology. CS was reacted with 1,3-diethyl-2-thiobarbituric acid (DETBA) with triethylorthoformate in the presence of methanol and acetic acid (4:1). The functional groups in the synthesized materials were confirmed by Fourier transform infrared and solid-state NMR spectroscopy, whereas X-ray diffraction revealed the level of crystallinity. The CS derivative (CS–DETBA) was tested for its cytotoxic effects on human gastric adenocarcinoma AGS cells and was found to be nontoxic. The prepared derivative showed a much enhanced inhibitory effect on the growth of three bacterial strains, Escherichia coli, Pseudomonas aeruginosa, and Staphylococcus aureus, over that of CS itself. Overall, CS–DETBA showed good solubility in a range of organic solvents, such as dimethyl sulfoxide and N,N-dimethylformamide, and was blended with polycaprolactone (PCL) to form films and electrospun nanofibers. The morphologies of the synthesized materials were analyzed by field emission scanning electron microscopy, and the fiber diameter was 360 nm under optimum conditions. This study demonstrated that the CS–DETBA–PCL blend could be a potential material for tissue engineering and biomedical applications.

Item Type: Article
Uncontrolled Keywords: biopolymers and renewable polymers; electrospinning; polysaccharides
Subjects: Q Science > Q Science (General)
Q Science > QD Chemistry
R Medicine
R Medicine > RK Dentistry
Divisions: Faculty of Dentistry
Faculty of Engineering
Faculty of Medicine
Faculty of Science > Dept of Chemistry
Depositing User: Ms. Juhaida Abd Rahim
Date Deposited: 10 Apr 2019 06:38
Last Modified: 10 Apr 2019 06:38

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