SYNTHESIS OF SILVER NANOPARTICLES IN A CHITOSAN SOLUTION
Journal Title: Progress on Chemistry and Application of Chitin and its Derivatives - Year 2010, Vol 0, Issue
Abstract
In the present study silver nanoparticles were obtained using the ability of chitosan to form chelate compounds with metal ions and taking advantage of its reducing properties. The reduction process was conducted at the temperature 60°C or applying γ radiation from 60Co cobalt source. A preliminary characteristic which allows us to realize the size of formed silver nanoparticles was made on the basis of the measurements of UV absorption and dynamic light dispersion.
Authors and Affiliations
Zofia Modrzejewska, Roman Zarzycki, Jan Sielski
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Differential thermal analysis was carried out over the range of –190 ÷ 400 °С on six samples of chitin from shells of industrial crabs of various species. All samples of the chitin have several relaxation transitions of...
CELL BINDING AND PENETRATION OF QUATERNIZED CHITOSAN DERIVATIVES
Chitosan (Ch) is an attractive biopolymer with multiple reactive groups. However it is poorly soluble at neutral pH. Quaternization improves its solubility and permits the development of various positively charged drug d...
INHIBITION OF CHITIN DEACETYLASE BY ACETIC ACID PRELIMINARY INVESTIGATION
The current paper reports on a preliminary investigation of the mechanism of inhibition of chitin deacetylase isolated from Absidia orchidis vel coerulea by the acetic acid released during the deacetylation process. It i...
PHYSICOCHEMICAL CHARACTERISTICS OF CHITIN-POLYESTER SYSTEMS IN DEPENDENCE ON THEIR COMPOSITION
In order to improve the properties of their individual components, the compositions of dibutyrylchitin (DBC) and aliphatic polyesters (PCLG) were prepared and examined. The studied systems are homogeneous in a wide range...
THE INFLUENCE OF THE ADDITION OF COLLAGEN ON THE RHEOLOGICAL PROPERTIES OF CHITOSAN CHLORIDE SOLUTIONS
Colloidal solutions of chitosan of crab origin with the addition of collagen obtained from cowhide were studied. Were presents the influence of collagen concentration and the method of preparing the sample on the obtaine...