Characteristic properties of spinning solution and nanofibres from chitosan biopolymer

Abstract

Electrospinning from solutions of polymers which is a promising way of nanofibres manufacture in the field of nanotechnologies is reviewed in the paper. Chitosan which possesses wound-healing action was used as polymer, it is also non-toxic, biocompatible and biodegradable. Nanofibres on its basis manifest the superdeveloped surface and voids rating. Taking into account wound he aling prope rties, chitosan is very effective at producing wound textile for burns, long nonhealing wounds, and trophic ulcers. Nanofibres from chitosan were produced according to the Nanospider technology on the NS LAB 500 S (ELMARCO, Czech Republic). During process of nanofibres electrospinning potential difference between electrodes up to 60 kV was created. Positively charged sprays push each other, move and vibrate during electrospinning. Diameter of a spray decreases towards nanosizes because their movement accelerates. The chemical composition, viscosity, and rheological parameters of the solution are developed. The electrospinning technology is optimized; the structure of a nanofiber layer is analyzed by method of scanning microscopy on JSM-5610 LV JEOL. Thus, the prospects of use of Nanospider technology are defined for production of nanofibres based on polymer solutions.