Chitosan as a potential stabilizing agent for titania nanoparticle dispersions for preparation of multifunctional cotton fabric

Daylight Bactericidal Titania Textiles: A Contribution to Nosocomial Infections Control

“…Chitosan has been conjugated with a-TiO 2 NPs to test the synergistic effect on the viability of S. aureus . CS decoration raised the bacterial performance to 99.99% (Figure 6), in accordance with the reported results in (crystalline) titania-chitosan complexes [28,42].…”

“…Chitosan’s biocompatibility, non-toxicity, non-carcinogenicity, and antimicrobial activity allows for its use in commercial applications, such as food preservation, dentistry, and ophthalmology, and in the manufacture of wound-dressings and antimicrobial-finished textiles, namely, in cotton, polyester, and wood fibers, where patented products have reached the market (Crabyon ® OMIKENSHI, Japan) [21,22,23,24,25,26,27]. CS amine groups present a high affinity to titania, being commonly used as a stabilizing agent for titania NPs in (water) dispersions [28]. The ultraviolet activated chitosan-(crystalline) titania bactericidal synergy has been reported in applications such as catalyst [29], protective films [30], filtration membranes [31], and biomaterials, to use as implants or in tissue engineering products [32].…”

A review of antimicrobial fabric containing nanostructures metal‐based compound

“…Thus, researchers have been added noble metal and additive material to extend the light absorption range of TiO 2 from UV to visible light, which resulted in high generation of ROS. These include silver/polysiloxane (XPs) , chitosan , chitosan/AgCl , and sericin/polycarboxylic acid . Notably, Ag‐TiO 2 coated cotton fabrics have been studied due to the shifting of UV‐vis absorption spectrum to long wavelength (>400 nm), thus enable the enhancement of antibacterial activity under fluorescent light.…”

“…There are several techniques in preparation of TiO 2 ‐coated fabric namely, pad dry cure method and sonosynthesis in which all of these methods are carried out at low temperature. Table shows the summary of TiO 2 NPs‐coated textile and its antibacterial effects.…”

“…Both LMW‐CS and HMW‐CS coated with TiO 2 on cotton has self‐cleaning, UV‐protection, and antibacterial activity. However, with HMW‐CS samples, there was an increase in TiO 2 particle size and dispersion stability due to its high molecular weight able to create a thicker layer around the TiO 2 before the repulsion suppressed the deposition of further chains . Behzadnia et al have used sonochemical method at 60°C–65 C to produce TiO 2 ‐coated WO fabric by using two different precursors namely TTIP and titanium butoxide.…”