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2 Progress on Chemistry and Application of Chitin and its Derivatives

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THE USE OF CHITIN AND CHITOSAN IN MANUFACTURING DRESSING MATERIALS

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Latańska I. , Kolesińska B. , Draczyński Z. , Sujka W.

Progress on Chemistry and Application of Chitin and its Derivatives

2020

tom 25

16 - 36

Despite continuous progress in the development of advanced dressing materials, there is a constant need for dressings used in an environment of infected and hard-to-heal wounds. Dressings that meet the above described requirements are products based on chitin and its derivatives. Chitosan and chitin derivative dressings are now becoming a very effective medical device in healing hard-to-heal wounds, as well as in the control of severely bleeding wounds. Chitosan and chitin are particularly valuable raw materials that accelerate wound healing processes, and they are also biocompatible and antibacterial. Dressings made of butyric-acetic chitin copolyester are intended for treating wounds of various aetiologies, including chronic wounds in which the healing process is disturbed by concomitant diseases. Materials based on chitosan are also widely used in the area of heavily bleeding and chronic wounds.

ADSORPTION OF SILVER IONS ON CHITOSAN HYDROGEL BEADS

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Sujka W. , Rogacki G. , Modrzejewska Z. , Zarzycki R.

Progress on Chemistry and Application of Chitin and its Derivatives

2023

tom 28

166-187

We investigated the adsorption of silver(I) from silver nitrate (AgNO3) and silver sulphate (Ag2SO4). We compared the adsorption ability of chitosan in the form of hydrogel beads with that of chitosan acetate – an initial solution from which the beads were derived. We developed a model of adsorption kinetics, assuming the simultaneous occurrence of the diffusion process and the chemical reaction. We confirmed and described the chemical nature of adsorption based on the Fourier-transform infrared and X-ray photoelectron spectra.