AFM and SEM analysis of polystyrene Surface Treated by DC Pseudo Plasma Discharge

Abstract

I N THIS work, the surface treatment of polystyrene using the DC Pseudo-Plasma is studied. First, the DC Pseudo-plasma was employedas a function of plasma device parameters under different operating conditions including time (t) (30 s), current (I) (15mA), distance (d) (3 mm) between inter-electrodes, mesh anode transparency (T) (19%), distance between the polystyrene sample and the mesh anode (D) (2mm) and air pressure in plasma exposuring system (P) (2 torr). The best optimization of these parameters were performed by the water absorbency, which supported by the Scanning Electron Microscope (SEM) test Atomic Force Microscope (AFM) test.

Surface improvement of cotton/polyester blend textile using DC air glow discharge plasma

“…Figure 5(a) shows the relation between the contact angle ((which refers also to the wetting time or water absorption) and the time of treatment for cotton/polyester blend samples. For longer exposure time, the treated sample has more efficiency to interact with plasma and the wettability is more enhanced [4][5][6]. The lowering of contact angle is primarily due to the increasing polar component of surface energy [6,7].…”

“…These modifications are limited to a few nanometers in-depth, which only changes the outermost chemical, structural, and surface properties [1][2][3][4]. The effectiveness of surface modification depends on the discharge conditions such as the gas type, gas pressure, input power, treatment time [5,6]. In addition, the surface plasma modification technology aims to change the outermost surface of a material in the nanometer range without affecting bulk properties [7][8][9][10][11].…”

New nature dye printing paste functional on Varies fabric kinds enhanced by plasma irradiation

“…High concentration of neutral reactive species in oxygen plasma etches the fiber surface, generating cracks and grooves [14][15][16]. The free oxygen radicals increase surface polarity by introducing new polar carboxylic and hydroxyl derivatives [17][18][19] either during the treatment and/or immediately after the plasma treatment on exposure to the atmosphere [20,21]. This article studiesthe ability to print various textile fabrics (natural, synthetic, and blends) with natural dyes (which have no affinity for some of the fibers) by using the pigment-printing technique .…”