Surface Modification of Polypropylene Fabrics by Acrylonitrile Cold Plasma

Abstract

Polypropylene fabrics were extracted with carbontetrachloride and acetone by Soxhlet extraction, and then PPAN ( plasma polymerized acrylonitrile ) was grafted to the surface of the extracted fabrics using a ground pressure of 0.05 mm Hg, 0.3 mm Hg pressure in the reactor, 60 W and 100 W RF power, and reaction times of 30 seconds, 1, 3, and 5 minutes. ESCA analysis was used to determine the ratios of carbon, nitrogen, and oxygen at a 20 Å sampling depth. IR and ATR-IR were used to obtain information on the structure of the grafted surface. Major differences were detected in the IR spectra of PPAN in comparison to PAN. The spectra of deposited polymers indicated the loss of —C≡N functional groups. Dehydrogenation and in tramolecular reorganization involving =C=N— and =C =C = also occurred, and as reaction time increased, the level of structural changes increased. Longer reaction periods and higher power resulted in increased deposition rates. Studying the water uptake and dyeability of PPAN revealed that higher treatment times lead to higher water uptake and K/S values. The nature of the substrate (Pyrex glass, KBr pellet, and polypropylene fabric) did not have a significant influence on the structure of deposited films.

Effect of Nitrogen Plasma Treatment and Direct Dye on Zeta Potential of Cotton Fabric

“…Combining these factors make different effects on textiles. One of them is etching on the surface or cleaning the surface of textiles 1,5 .…”

Effects of Oxygen Plasma Treatment on the Wettability of Polypropylene Fabrics

“…Glow discharge plasma treatment at low pressure has been employed to modify the surface characteristics of PP (Sarmadi et al, 1993;Tsai et al, 1997). Improved wettability and dyeability of PP fabrics were obtained using glow discharge plasma by grafting nitrogen-containing active groups on the surface (Sarmadi et al, 1993).…”

“…Improved wettability and dyeability of PP fabrics were obtained using glow discharge plasma by grafting nitrogen-containing active groups on the surface (Sarmadi et al, 1993). Hydrophilic surfaces have been developed through glow discharge plasma at one-atmosphere on PP webs (Tsai et al, 1997).…”

Surface functionalization by RF plasma deposition of ethylene diamine, acrylonitrile, and acetonitrile

“…There is an abundant amount of literature on plasmasynthesized polyacrylonitrile, [19][20][21][22] but few in-depth studies of effect of frequency and pulsing on plasma polymerization exist. AcN is an unconventional monomer of choice with only one unsaturated bond and the nitrile group is not a site for conventional polymerization.…”