Modification Of Textile Materials Research Articles

Modification of Textile Materials with Nanoparticles Using Low-Pressure High-Frequency Plasma

The possibility of modifying the surface of textile fibers with inorganic nanoparticles is experimentally established. The processes of fixing silver nanoparticles on the surface of nonwoven materials based on polypropylene fibers with preliminary modification in plasma of a high-frequency (HF) capacitive discharge of low pressure in order to impart stable antibacterial properties are studied. The processes of glass-fabric modification with the simultaneous deposition of silicon dioxide nanoparticles under plasma conditions of a low-pressure HF induction discharge to achieve the effects of adjustable wettability are considered.

A review-application of physical vapor deposition (PVD) and related methods in the textile industry

Physical vapor deposition (PVD) is a coating process in which thin films are deposited by the condensation of a vaporized form of the desired film material onto the substrate. The PVD process is carried out in a vacuum. PVD processes include different types, such as: cathode arc deposition, electron beam physical vapor deposition, evaporative deposition, sputtering, ion plating and enhanced sputtering. In the PVD method, the solid coating material is evaporated by heat or by bombardment with ions (sputtering). At the same time, a reactive gas is also introduced; it forms a compound with the metal vapor and is deposited on the substrate as a thin film with highly adherent coating. Such coatings are used in a wide range of applications such as aerospace, automotive, surgical, medical, dyes and molds for all manner of material processing, cutting tools, firearms, optics, thin films and textiles. The objective of this work is to give a comprehensive description and review of the science and technology related to physical vapor deposition with particular emphasis on their potential use in the textile industry. Physical vapor deposition has opened up new possibilities in the modification of textile materials and is an exciting prospect for usage in textile design and technical textiles. The basic principle of PVD is explained and the major applications, particularly sputter coatings in the modification and functionalization of textiles, are introduced in this research.

A Study on Process Parameters for Imparting Hydrophobic Effect on Cotton Fiber with CF<sub>4</sub>-Plasma Treatment

The acquisition of hydrophobic surface offering liquid repellency is exploitable for diverse applications. This study examined the possibility of developing hydrophobic cotton fiber by employing atmospheric pressure plasma technique which is an environmentally friendly approach. We seek to determine a controlled hydrophobic modification of textile materials through the optimization of the fabrication process. A hydrophobic surface modification of cotton fabric was conducted with atmospheric pressure plasma using tetrafluoromethane (CF4) as the reactive gas. The resultant hydrophobic behavior was quantified macroscopically by a wetted area measurement. To control the degree of modification of the substrate, an orthogonal experimental design technique was utilized. The optimum process conditions were established based on the reduction of the wetted area of the plasma-modified fabrics.

Effect of Weave Geometry on Surface Energy Modification of Textile Materials via Atomic Layer Deposition

Atomic layer deposition (ALD) has recently been demonstrated as a novel method for the creation of nanoscale coatings on fiber-based materials. The ALD process has proven effective in altering the surface energy of both woven and nonwoven materials. In this work, the effect of fabric weave geometry on the behavior of ALDmodified fabrics has been studied. Aluminum oxide ALD was used to modify a series of fabric weaves which were then analyzed using sessile contact angle measurements. The experimental results demonstrated the ability of the ALD process to modify the surface energy of a variety of weave structures, regardless of the inter-fiber spacing within the yarns. At the same time, the amount of fiber spacing, which is influenced by the weave geometry, changes the effect of the ALD coatings on fabric hydrophobicity and hydrophilicity. The results of this work demonstrate the versatility of the ALD process when modifying woven fabric structures and its potential as a method for nanoscale textile finishing.

Characterization of metallic textiles deposited by magnetron sputtering and traditional metallic treatments

In this study, the surface appearance, light reflectivity and low-stress mechanical properties of magnetron sputter coated fabric were compared with traditional metallic treated fabrics. It is found that a layer of fine silver particles distributed evenly on the fabric surface with uniform grains and there were no obvious structural damages to the fabric after the sputtering. The sputter coated fabric has a greater value in reflectance and lightness than metallic powder printed fabric, but is lower than that of metallic foil laminated fabric. The values of surface geometrical smoothness (SMD) increased after metallic powder printing while decreasing slightly after sputter coating and decreasing significantly after metallic foil lamination. The tensile loading curves of both sputter coated and untreated cotton spandex fabrics are similar which indicate that the modification of sputter coating is minimal when compared with the other two metallic treatments. Therefore, sputtering has opened up new possibilities in the modification of textile materials and is an exciting prospect for usage in textile design and technical textiles.

Role of the Active Species of Plasmas Involved in the Modification of Textile Materials

AbstractThe role of the active species involved in the superficial modification of natural and manmade fibers is discussed for the example of wool and PA6 fabrics treated by means of post‐discharge plasmas (N2, N2 + 23% O2, O2) to avoid UV radiation, ions, electrons and other species present in direct plasma discharges. The active species present in the N2 post‐discharge have been quantitatively and qualitatively evaluated by means of optical emission spectroscopy. Their action on the surface of the fibers has been analyzed by dynamic contact angle, revealing an improved wettability that has been attributed to the generation of new chemical groups and the reduction/elimination of the fatty layer on the surface of wool.magnified image

Modification of Textile Materials' Surface Properties Using Chemical Softener

In the present study the effect of technological treatment involving the processes of washing or washing and softening with chemical cationic softener "Surcase" produced in Great Britain on the surface properties of cellulosic textile materials manufactured from cotton, bamboo and viscose spun yarns was investigated. The changes in textile materials surface properties were evaluated using KTU-Griff-Tester device and FEI Quanta 200 FEG scanning electron microscope (SEM). It was observed that the worst hand properties and the higher surface roughness are observed of cotton materials if compared with those of bamboo and viscose materials. Also, it was shown that depending on the material structure the handle parameters of knitted materials are the better than the ones of woven fabrics.http://dx.doi.org/10.5755/j01.ms.17.1.249