Antibacterial Fibers Based on Cellulose and Chitosan

Abstract

Cellulose and chitin are the most abundant polysaccharides in nature. Chitin is the natural amino polysaccharide and is estimated to be produced annually almost as much as cellulose. These resources are renewable and inexhaustible if rationally utilised. Unique properties of chitin and chitosan (chitin derivative obtained by the deacetylation of chitin), such as antibacterial activity, biocompatibility, non-toxicity and bioresorptivity make these materials very suitable and important biomaterials. During our studies, we examined the possibilities of obtaining composite, biologically active cellulose-chitosan fibres. Аn effective two-stage procedure for obtaining antibacterial fibers based on cellulose and chitosan was developed. The first stage involves the formation of dialdehyde cellulose by potassium periodate oxidation of cellulose fibers, which is able to form Schiff's base with chitosan. In the second stage, chitosan coated cellulose fibers were prepared by subsequent treatment of oxidized cellulose fibers with a solution of chitosan in aqueous acetic acid. Maximum percentage of chitosan introduced into/onto the cellulose fibers was 0,51 % (w/w). Antibacterial activity of cellulose fibers coated with chitosan as the active component against bacteria Escherichia coli and Staphylococcus aureus, was confirmed by in vitro experiments.

Chitosan-treated cotton yarns: Impact of application method on antimicrobial activity

“…Various procedures can be used to functionalize cotton with chitosan. Most often, the procedures include several stages (drying, exhaustion, padding, rinsing) whose schedule can be changed [20,21]. The interest was focused on defi ning a procedure that would give the best antimicrobial activity, after the optimal concentration of chitosan was defi ned [22].…”

Antibacterial modification of Lyocell fiber: A review

“…Similarly, Janjić et al also developed an effective two-stage method to prepare chitosan-coated antibacterial Lyocell fiber (Janjic et al, 2009;Janjić, Kostić, Škundrić, Lazić, & Praskalo, 2013). First, Lyocell fibers were oxidized by potassium periodate to introduce ring-opened 2, 3-dialdehyde monosaccharides.…”

Antibacterial Properties of Biofilm Schiff Base Derived from Dialdehyde Cellulose and Chitosan

“…The degree of oxidation of the cellulose is expressed as the number of carbonyl groups formed on dialdehyde cellulose compound. A linear relationship between the carbonyl content with a copper number (μmol/g) expressed by equation 2 [19].…”