Pulsed Plasma Enhanced Chemical Vapor Deposition of Poly(allyl alcohol) onto Natural Fibers

Abstract

Pulsed plasma enhanced chemical vapor deposition was used to coat natural fibers of silk, wool, and cotton with poly(allyl alcohol) films. Untreated and coated fibers were characterized using X‐ray photoelectron spectroscopy (XPS), electron paramagnetic resonance (EPR), and scanning electron microscopy. Coated fibers had very similar XPS high resolution C1s spectra, suggesting the coatings are uniformly and conformally coated, regardless of fiber type. EPR data show strong signals from incorporated radicals in all three of the coated fibers, with the strongest signal arising from the coated cotton fibers, indicating more free radicals are formed during plasma treatment of cotton. Tensile strength tests reveal coated wool and silk fibers were significantly stronger than their uncoated counterparts.magnified image

Isoelectric points of plasma‐modified and aged silicon oxynitride surfaces measured using contact angle titrations

“…Survey scans were collected with a pass energy of 93.90 eV, and high‐resolution spectra were acquired with a pass energy of 23.50 eV. Charge correction for all spectra were referenced to the C 1s peak at 284.8 eV 28. Elemental compositions were calculated from high‐resolution spectra and all values reported are the mean and standard deviation of a minimum of three measurements on at least two samples (i.e.…”

Plasma Treatment in Textile Industry

“…Substantial enhancement of wear resistance was observed in textiles on which a thin film of SiO x C y H z was deposited by plasma enhanced CVD method using hexamethyldisiloxane as a precursor compound . Malkov and Fisher used pulsed plasma enhanced CVD to obtain thin uniform coatings of poly(allyl alcohol) on silk, wool and cotton fibres. Tensile strength of wool and silk was found to improve after treatment.…”

Deposition of Hydroxyl Functionalized Films by Means of Water Aerosol‐Assisted Atmospheric Pressure Plasma

“…Deposition processes of hydroxyl functionalized coatings from alcohol precursors have been thoroughly investigated in low pressure plasma [51][52][53][54][55][56][57] ; on the contrary few papers report on work aimed at depositing such films in APP conditions from OH-bearing monomers (such as hydroxyethylmethacrylate or propargyl alcohol). [58,59] To the best of our knowledge, literature does not account for the modulation of hydroxyl content in APP polymerized coatings from a water/hydrocarbon feed.…”