Application of chitosan on cotton fabric

1 Appearance and feel of chitosan-treated cotton fabric 

The appeal of the fabric is manifested by its appearance and the feel. Various factors such as color and transparency of the polymeric 

Absorbency Time taken for water drop to penetrate, seconds  

Blue dye showed high substantivity toward chitosan-treated fabric than the red. 

The polycationic chitosan can also dissipate the negative surface charge on cotton and drives dye molecules to the fiber. Such effects can be studied by comparing the dyeing results of chitosan-treated samples conducted in electrolyte-free dye bath with that in presence of electrolyte. The progressive decrease in importance of sodium sulfate taken as electrolyte with increase in chitosan concentration, as shown in Figs. 19.26 and 19.27, clearly elucidates the role of chitosan in the improvement of dye uptake even at reduced electrolyte concentration. 

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