Plasma-Enhanced Vapor Deposition Process for the Modification of Textile Materials

Nowadays many techniques are used for the surface modification of fabrics and textiles. Two fundamental techniques based on vacuum deposition are known as chemical vapor deposition (CVD) and physical vapor deposition (PVD). In this chapter, the effect of plasma-enhanced physical and chemical vapor deposition on textile surfaces is investigated and explained

Decomposition of Bromocresol Green Using a Nonthermal Atmospheric Pressure Plasma Jet

This research study aims to decompose bromocresol green (C21H14Br4O5S) using direct irradiation of a nonthermal atmospheric pressure plasma jet. The absorbance spectra of the bromocresol green solution were measured, as was its electrical conductivity and its pH before and after different durations of irradiation. The results showed that the lengths of conjugated systems in the molecular structure of bromocresol green decreased, and the bromocresol green solution was decolorized as a result of the decomposition of bromocresol green. This result indicates that cold atmospheric pressure plasma jet irradiation is capable of decomposing and can also be used for water purification

Effect of Hexamethyldisiloxane (HMDSO)/Nitrogen Plasma Polymerisation on the Anti Felting and Dyeability of Wool Fabric

This work is focused on the characterisation of the physical and surface properties of plasma coated wool fabric. A thin film was deposited on wool fabric samples by means of the plasma polymerisation of hexamethyldisiloxane (HMDSO) and differences between such plasma-treated and untreated fabrics were evaluated. The films deposited were characterised by means of Fourier transform infrared (FTIR) spectroscopy. Also the surface morphology of samples was studied using a scanning electron microscope (SEM). Hydrophobic properties of the samples were tested using the water drop test. The results show that by plasma polymerisation, hydrophobic properties of the wool surface change to super hydrophobic. The main aim of the HMDSO/N2 plasma polymerisation of wool fabrics is to improve anti felting properties and dyeing behaviour

1-Benzyl-2-(4-chloro­phen­yl)-4,5-di­phenyl-1H-imidazole

The mol­ecular conformation of the title compound, C28H21ClN2, is stabilized by an intra­molecular C—H⋯N hydrogen bond. It has many pharmacological properties, such as being an inhibitor of P38 MAP Kinase, and can play an important role in biochemical processes

Effect of the Non-Thermal Argon Plasma Irradiation on Decolorization of Methyl Orange Solution

The aim of this paper is decolorization of a Methyl orange solution using an atmospheric pressure Argon plasma jet. When the plasma jet was directly irradiated onto a Methyl orange solution, the solution was decolorized. PH and absorbance of samples were measured before and after irradiation with various durations. Thus, non-thermal plasma jet irradiation is considered to be capable of decomposing, and can also be used for water purification

Degradation of bromophenol blue molecule during argon plasma jet irradiation

The aim of this paper is to study degradation of a bromophenol blue molecule (C19H10Br4O5S) using direct irradiation of cold atmospheric argon plasma jet. The pH of the bromophenol blue solution has been measured as well as its absorbance spectra and conductivity before and after the irradiation of non-thermal plasma jet in various time durations.The results indicated that the lengths of conjugated systems in the molecular structure of bromophenol blue decreased, and that the bromophenol blue solution was decolorized as a result of the decomposition of bromophenol blue. This result shows that non-thermal plasma jet irradiation is capable of decomposing, and can also be used for water purification

Dependence of Tokamak Plasma Position to its Internal Inductance

Abstract In this contribution we will p resented comparison of two techniques in order to investigate of the effects of internal inductance on tokamak p lasma position, based on a toroidal flu x loop (diamagnetic loop) and magnetic probes measurements. For this purpose, a diamagnetic loop with its co mpensation coil, and also array of magnetic probes were designed, constructed, and installed on outer surface of the IR-T1 tokamak chamber, and then the poloidal beta and poloidal and radial magnetic fields obtained. Moreover a few appro ximate values of the internal inductance for different possible profiles of the p lasma current density are also calculated. Then, the Shafranov parameter and also the Shafranov shift were determined. Experimental results compared. Co mparison of results on IR-T1, show that (1) by increasing the internal inductance from one, plas ma colu mn shifted inward, and also (2) IR-T1 p lasma current density profile relate to the power of 3 ≈ υ approximately

Correlation between the Plasma Parameters and the External Resonant Helical Fields in Tokamaks

Abstract Determinations of polo idal beta, plas ma energy, plas ma p ressure, plas ma temperature, p lasma resistance, and plasma effective atomic number are important in tokamak plas ma experiments. In this paper we describe a theoretical and experimental approach especially based on toroidal flu x loop for measurement of these parameters in presence of Rotating Helical Field (RHF) in IR-T1 tokamak. For th is purposes a diamagnetic loop with its compensation coil constructed and installed on outer surface of the IR-T1. A lso in this work we measured the plasma current, plas ma voltage, and the plas ma density fro m the Rogowski coil, po loidal flu x loop, and the Langmu ir probe measurements, respectively. Experimental results show that the addition of a relatively small amount of RHF with L=2 and L=3 modes could be effective for improving the quality of tokamak plas ma discharge by creating the steady state plasma