Studies on the Diffusion of Direct Dyes in Chitosan Film
Journal Title: Progress on Chemistry and Application of Chitin and its Derivatives - Year 2009, Vol 0, Issue
Abstract
The diffusion of two direct dyes in chitosan film under neutral conditions has been followed using the Sekido roll technique. Analysis of the concentration profiles confirms that the diffusion process is similar to that observed with direct dyes on cellulose and that the dependence of the diffusion coefficient on dye concentration follows the same general form, DC = D0(1 + βC), on both substrates.
Authors and Affiliations
Simon Mazengarb, George AF Roberts
RHEOLOGICAL PROPERTIES OF CHITOSAN BLENDS WITH PARTIALLY HYDROLYZED POLYACRYLAMIDE IN DIFFERENT SOLVENTS
In the present paper, the results of rheological measurements in solutions of chitosan (Ch) with partially hydrolyzed polyacrylamide (HPAM) are presented. Aqueous acetic acid, lactic acid and aqueous acetic acid/NaCl wer...
THE EFFECT OF SELECTED POLYMERS ON THE PROPERTIES OF THERMOSENSITIVE HYDROPHILIC GELS CONTAINING LACTIC ACID COMPLEXED WITH CHITOSAN
Bacterial vaginitis affects women of all age groups. Numerous recurrences of the condition are widely discussed by clinicians. Traditional therapeutic schemes recommended by world treatment centres and health organizatio...
SYNTHESIS OF SILVER NANOPARTICLES IN A CHITOSAN SOLUTION
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...
USE OF SAWDUST IMMOBILISED ON CHITOSAN FOR DISPOSAL OF DYES FROM WATER SOLUTIONS
In this article, the sorption properties of chitosan hydrogel beads, beech sawdust and sawdust immobilised on chitosan in relation to Reactive Black 5 (RB5) and Basic Violet 10 (BV10) dyes were compared. In the conducted...
INVESTIGATION OF INACTIVATION OF CHITIN DEACETYLASE IN A MEMBRANE REACTOR
Enzymes are protein that can lose its activity because of several physical and chemical factors. It was shown for several enzymes that mixing in a reactor, pumping could inactivate them. Using experimental set-up it is n...