Layer-by-layer deposition of polyelectrolyte nanolayers on natural fibres: cotton

Abstract

The layer-by-layer (LbL) deposition of poly(sodium 4-styrene sulfonate) (PSS) and poly(allylamine hydrochloride) (PAH) over cotton fibres is reported. Cotton fibres offer unique challenges to the deposition of nanolayers because of their unique cross section as well as the chemical heterogeneity of their surface. Cationic cotton substrates were produced by using 2,3-epoxypropyltrimethylammonium chloride. Attenuated total reflectance FTIR, x-ray photoelectron spectroscopy (XPS) and transmission electron microscopy (TEM) were used to validate the presence of the nanolayers as well as to corroborate their self-organized structure. TEM images indicated conformal and uniform coating of the cotton fibres. XPS spectral data were found to be in quantitative agreement with previous published work that studied the LbL deposition of PSS and PAH over synthetic substrates.

Recent Developments and Needs in Materials Used for Personal Protective Equipment and Their Testing

“…In addition, they can allow the easy incorporation of actuators and sensors into clothing. The barrier effect of nanomaterials can also be exploited, either in the form of a web of nanofibers for selective filtration as shown in Figure 3 [39] or as nanolayers deposited on fabrics made of natural fibers, providing them with selective transport properties [40,41].…”

Mixed protein–polysaccharide interfacial layers: effect of polysaccharide charge distribution

“…To mention a few possible applications of LBL, Hyde et al 8 adsorbed alternative layers of poly(allylamine hydrochloride) and poly(sodium 4-styrene sulfonate) onto cotton fibres, with a view to control the surface selectivity and permeability of the fibres 45 and thus develop functional textiles. They reported depositing as many as 20 individual layers 8 onto the surface of such substrates.…”

“…They reported depositing as many as 20 individual layers 8 onto the surface of such substrates. Even larger numbers, up to 100, alternate layers of polyaniline and poly(styrene sulfonate) were lied on quartz substrates using a novel automated in flow deposition apparatus.…”

Novel Antimicrobial Polyelectrolytes Nanofilm Coatings Using the Layer By Layer Technique~!2008-08-26~!2008-10-09~!2008-11-26~!

“…Multilayers films of polyelectrolytes complexes may be coated on different substrates by alternate exposure to solutions of oppositely charged soluble polymers [13][14][15][16]. The multilayers have a general amorphous and structure due to interpenetration of polymer molecules and [17,18] and they have shown exceptional promise as selective membranes for the controlled transport [19] and release [20] of small molecules and for the immobilization of biomacromolecules [21] or particles [22].…”