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Characterization of Chitosan Membranes Crosslinked by Sulfuric Acid

DOI: 10.4236/oalib.1104336, PP. 1-13

Subject Areas: Bioengineering, Biological Materials, Cell Biology, Biochemistry

Keywords: Chitosan, Crosslinking, Biomedical Application

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Abstract

Development of novel biomaterials and its practical application have been the subject of much research in the field of scaffolds for tissue engineering, providing the success of producing scaffolds biomaterials that facilitate tissue growth and provide structure support for cells. Due to its biocompatibility and biodegradability, chitosan has been the focus of several researches in recent years to be applied in the biomedical field and chemical modifications of chitosan through crosslinks can produce materials with a wide variety of properties. The objective of this study was to obtain and characterize, chemically and biologically, ionically crosslinked chitosan membranes. Chitosan membranes were prepared by solvent evaporation and the crosslinks were introduced by reaction with sulfuric acid solution. The cross-linked membranes were characterized by Fourier transform infrared (FTIR), X-ray diffraction (XRD), Scanning Electron Microscopy (SEM), X-ray Dispersive Energy Spectroscopy (EDX) and contact angle measurements. The biological assays of the membranes were performed with NIH 3T3 cells in two steps: evaluation of cytotoxicity by indirect contact of the cells with the extracts of the chitosan membranes and finally with the direct contact of the cells on the filaments of chitosan to obtain adhesion and cell proliferation information. Non-crosslinked membranes of chitosan were used as controls for all assays. With the physicochemical tests, it was possible to observe an effective crosslinking reaction in chitosan. Biological assays have revealed that the membranes are non-cytotoxic but must still be modified to provide cell adhesion and proliferation.

Cite this paper

Fideles, T. B. , Santos, J. L. , Tomás, H. , Furtado, G. T. F. S. , Lima, D. B. , Borges, S. M. P. and Fook, M. V. L. (2018). Characterization of Chitosan Membranes Crosslinked by Sulfuric Acid. Open Access Library Journal, 5, e4336. doi: http://dx.doi.org/10.4236/oalib.1104336.

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