Plasma polymerization of acrylic acid onto polystyrene by cyclonic plasma at atmospheric pressure

Abstract

The cyclonic atmospheric-pressure plasma is developed for chamberless deposition of poly(acrylic acid) film from argon/acrylic acid mixtures. The photoemission plasma species in atmospheric-pressure plasma polymerization was identified by optical emission spectroscopy (OES). The OES diagnosis data and deposition results indicated that in glow discharge, the CH and C2 species resulted from low-energy electron-impact dissociation that creates deposition species, but the strong CO emission lines are related to nondeposition species. The acrylic acid flow rate is seen as the key factor affecting the film growth. The film surface analysis results indicate that a smooth, continuous, and uniform surface of poly(acrylic acid) films can be formed at a relatively low plasma power input. This study reveals the potential of chamberless film growth at atmospheric pressure for large-area deposition of poly(acrylic acid) films.

Characterization of the deposition behavior and changes in bonding structures of hexamethyldisiloxane and decamethylcyclopentasiloxane atmospheric plasma‐deposited films*

“…The Yasuda parameter has been applied to atmospheric pressure systems with mixed applicability . Morent et al reported the effects of W / FM on deposition rate of a dielectric‐barrier discharge (DBD) for PECVD of HMDSO and described a decrease in deposition rate at a higher region of the monomer‐deficient domain.…”

“…Deposition rate, however, was not evaluated using the normalized parameter, GR / FM , and it is unclear if the values would be similar, perhaps if also using the porosity to calculate an equivalent thickness and dividing by monomer flow rate. Chang et al used a cyclonic plasma at atmospheric pressure to polymerize acrylic acid under various power and flow rates. Surface energy did not follow a trend with W / FM , while power independently showed a significant effect.…”

Effects of cyclonic plasma deposited organosilicon nano‐coating on 316 stainless steel and its surface characterization

“…With respect to the polar and dispersive components, the tendency of the polar component is similar to that of the surface energy, but the dispersive component remains at a constant value. The constant values of the dispersive component indicate that the variation in surface roughness is scarcely appreciable . The chemical structure and the bonding modes of cyclonic atmospheric pressure HMDSN and HMDSN/N 2 plasma deposited SS316 samples were evaluated by ATR‐FTIR.…”

Surface functionalization of an osteoconductive filler by plasma polymerization of poly(ε-caprolactone) and poly(acrylic acid) films

“…Comparison of obtained results with values reported in literature allows to recognise similar trends although variations rise from different plasma polymerization conditions and coated substrates. Thus, Jafari et al [89] reported a variation from 90 • for a non-treated PE film to an average of less than 10 • , for an unwashed PPAA coating; Chang et al [94] reported a spectra of water contact angles ranging from 5 to 30 • of atmospheric-pressure plasma pp-AAc thin films on PS (92 • ) depending on the plasma polymerization conditions. Further, the increased wettability of inorganic substrates has been similarly reported by Ward et al [95] for glass slides (WCA <15 • C) and by Vilani et al [50] who reduced the WCA of untreated Si (100) from 65 • to 30-55 • WCA using PAA under several plasma power conditions.…”