Chitosan nanocoating on cotton textile substrate using layer‐by‐layer self‐assembly technique

Abstract

An attempt was made to deposit a nanocoating onto a cotton textile substrate using a layer-bylayer self-assembly approach. Chitosan, a natural biopolymer with polycationic characteristic, was used as a polyelectrolyte along with poly(sodium-4-styrene sulfonate) as an anionic polyelectrolyte for the first time on a textile substrate using this technique. The nanocoated surface was evaluated for surface characteristics such as the contact angle and scanning electron microscopy. The effect of ultrasonication during the intermediate washing steps was explored. Ultrasonication during the washing steps clearly helped in depositing more uniform bilayers onto individual fiber surfaces; this contrasted with the deposition of a continuous coating layer, which was nonuniform and had a lot of surface cracks. The use of this novel method for depositing chitosan onto cotton imparted antimicrobial properties to the fabric without adversely affecting its flexibility, feel, or breathability.

Effect of Guanidinylation on the Properties of Poly(2‐aminoethylmethacrylate)‐Based Antibacterial Materials

“…Due to LBL assembly, the surface morphology of the substrate was changed; it is known, that LBL structures in general comprise a wavy surface 36. This characteristic morphology was also found in this case, as SEM micrographs of coated and uncoated fibers showed (see Figure S3).…”

Constructing safe and durable antibacterial textile surfaces using a robust graft-to strategy via covalent bond formation

“…5b), showing a reduction by 21.3%. This reduction was relative mild compared to the reduction from those coatings of polymer and nanoparticles2930.…”

“…Obviously, it provided a robust strategy to easily fabricate non-leaching antibacterial textile surfaces. PSBC has the small molecular nature, and no particle attachments or polymer films existed on textile surfaces after its grafting, which was completely different from those nanoparticle and macromolecule coatings30. Thus, the porosity of textile fibers was not destroyed and the grafted textiles had a better air permeability compared to those nanoparticle and macromolecule coatings2930.…”

“…PSBC has the small molecular nature, and no particle attachments or polymer films existed on textile surfaces after its grafting, which was completely different from those nanoparticle and macromolecule coatings30. Thus, the porosity of textile fibers was not destroyed and the grafted textiles had a better air permeability compared to those nanoparticle and macromolecule coatings2930. PSBC held the good hydrophilic character of betaine and could enhance the hydrophilicity of the textiles by 43.9% after it was grafted on textile surfaces, which is favorable to improve the moisturizing ability of the grafted textiles.…”

Photocatalytic effects on the quality of pork packed in the package combined with TiO2 coated nonwoven fabrics

“…However, the accumulation of the excess nanoparticles on the surface of substrate weakened the response of TiO 2 to X‐rays, and the superposition of particle scattering waves for TiO 2 /NWF‐12 was impaired, leading to the reduction of the intensity of XRD peak. In another research, Joshi, Khanna, Shekhar, and Jha () proposed a similar view that excessive load would have a negative impact.…”