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Influence of Electrospinning Parameters on the Hydrophilicity of Electrospun Polycaprolactone Nanofibres

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In the present study, PCL (polycaprolactone) nanofibres were produced by the electrospinning method. The use of PCL electrospun biopolymer in biomedical applications has attracted considerable interest due to its chemical resistance, biodegradability, biocompatibility, and non-toxic characteristics. However, the hydrophobic nature of PCL polymer restricts the useage of PCL nanofibres for the cell adhesion and absorption. A hydrophilic and biocompatible PCL electrospun mat with a low water contact angle is an attractive strategy for development in tissue engineering and wound dressing. In this study, we demonstrate a feasible and simple method to produce hydrophilic PCL nanofibres for possible application in wound dressing. Chloroform/ethanol (EtOH) and chloroform/dimethylformamide (DMF) mixtures were used as two different solvent systems. The impact of the polymeric solution concentration, applied voltage, and solvent mixtures on the fibre surface morphology and water contact angle was investigated. Consequently, bead structures were observed at low concentrations but disappeared with increases in the concentration. It was observed that the size of beads decreased and the diameter of fibres increased with increasing voltage. The wettability of the webs changed from hydrophobic to hydrophilic with changes of the polymer concentration. The contact angle of the nanofibre mats decreased in both solvent systems as the concentration increased. The results showed that the lowest contact angle was obtained in 24% wt. PCL+chloroform/EtOH solution and was 68°. The highest contact angle was obtained in 4% wt. PCL+chloroform/EtOH solution and was 112°. Using this method, the surface hydrophilicity of the PCL nanofibres improved easily without any surface treatment.

Keywords: Electrospinning; Hydrophilicity; Nanofibre; PCL

Document Type: Research Article

Affiliations: 1: Textile Engineering Department, Faculty of Engineering and Architecture, Kahramanmaras Sutcu Imam, University, Avşar Mah. BatıÇevreyolu Blv. No: 251/A, 46040, Kahramanmaras, Turkey 2: Bioengineering Department, Institute of Science and Technology, Kahramanmaras Sutcu Imam University, Avşar Mah. BatıÇevreyolu Blv. No: 251/A, 46040, Kahramanmaras, Turkey 3: Department of Nanotechnology and Informatics, Institute of Nanomaterials, Advanced Technology and Innovation, Technical University of Liberec, Studentska 1402/2, 46117, Liberec, Czech Republic 4: Department of Nonwovens and Nanofibrous Materials, Faculty of Textile, Technical University of Liberec, Studentska 1402/2, 46117, Liberec, Czech Republic

Publication date: November 1, 2019

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  • Journal for Nanoscience and Nanotechnology (JNN) is an international and multidisciplinary peer-reviewed journal with a wide-ranging coverage, consolidating research activities in all areas of nanoscience and nanotechnology into a single and unique reference source. JNN is the first cross-disciplinary journal to publish original full research articles, rapid communications of important new scientific and technological findings, timely state-of-the-art reviews with author's photo and short biography, and current research news encompassing the fundamental and applied research in all disciplines of science, engineering and medicine.
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