Thin film deposition by PECVD using HMDSO-O 2 Ar gas mixture on knitted wool fabrics in order to improve pilling resistance

Fibers and Polymers (Impact Factor: 0.88). 10/2008; 9(5):566-573. DOI: 10.1007/s12221-008-0091-4


In this work knitted wool fabrics were coated by a Si:Ox:Cy:Hz thin film with the aim to promote pilling resistance. The wool samples were plasma coated in a radio frequency (RF) glow
discharge using hexamethyldisiloxane (HMDSO) as the precursor, in mixture with argon and oxygen gases, for different deposition
times and reaction pressures, at constant discharge power. Deposited films were characterized by means of Fourier transform
infrared (FTIR) spectroscopy and surface morphology by means of scanning electron microscopy; moreover, propensity to pilling
of treated samples was investigated, showing that treated fabrics had a better pilling performance respect to untreated ones.

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    • "Moreover, in the case of wool, they have been employed to enhance its shrink resistance [19] [20] [21] [22] [23] [24] and its anti-pilling properties [25]. Despite its effectiveness on textiles, the inability to successfully incorporate low-pressure plasma treatment equipment into a continuous textile processing operation has limited the commercial viability of this technique. "
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    ABSTRACT: We performed atmospheric pressure plasma treatments of pure cashmere and wool/cashmere textiles with a dielectric barrier discharge (DBD) in humid air (air/water vapor mixtures). Treatment parameters have been optimized in order to enhance the wettability of the fabrics without changing their bulk properties as well as their touch. A deep characterization has been performed to study the wettability, the surface morphologies, the chemical composition and the mechanical properties of the plasma treated textiles. The chemical properties of the plasma treated samples were investigated with attenuated total reflectance Fourier transform infrared (FTIR/ATR) spectroscopy and X-ray photoelectron microscopy (XPS). The analyses reveal a surface oxidation of the treated fabrics, which enhances their surface wettability. Morphological characterization of the treated fibers with scanning electron microscopy (SEM) reveals minor etching effects, an essential feature for the maintenance of the textile softness.
    Full-text · Article · May 2015 · Applied Surface Science
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    • "Pills are cluster or tangle of a number of fibers rounded off into the shape of small tufts, which are created by friction and coiling on the surface of the textile fabric. An anti-pilling finish should be able to cement the fibers within the yarn so that their dragging becomes more difficult , without handle worsening (Rombaldoni et al., 2008). For this reason, one can suppose that a similar effect could also be obtained by chitosan functionalization of fiber surface. "
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    ABSTRACT: The aim of this study was the surface modification of wool fibers to confer a multifunctional finishing to the fabrics, improving the textile value and its applications without damage of comfort properties. The attention was focused on an economical and environmental friendly process to obtain an effective treatment with good durability to washing. Chitosan in acetic acid solution was applied by padding, and grafted by ultraviolet radiation, through radical reactions promoted by a photoinitiator. 2% chitosan grafted was enough to confer satisfactory antimicrobial activity (67% reduction of Escherichia coli) after an oxidative wool pre-treatment and 1h impregnation at 50°C. Moreover treated wool fabrics showed a strong dyeability increase toward acid dye. However the evaluation of the treatment durability to laundering showed different behavior depending on the nature of the surfactants. Finally, anti-felting properties with respect to untreated fabrics were revealed, while no effect was shown toward anti-pilling properties.
    Full-text · Article · Oct 2013
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    ABSTRACT: This work concerns the study of some important physical and mechanical properties of a wool fabric treated with a roll-to-roll atmospheric plasma jet equipment. The plasma pilot unit, based on a post-discharge technology, was equipped with an innovative plasma-to-fabric contactor, which promotes a relevant penetration of plasma through the fabric structure and geometrically defines the atmosphere. Wool fabrics were processed at three different velocities (1, 3 and 6 m/min); the other process variables were kept constant. Tensile strength, elongation at break, surface thickness, wettability and air permeability increased after the plasma treatment, while several low-stress mechanical properties, strictly related to the handle, were not modified. SEM analysis was also carried out to better interpret the above macroscopic results.
    No preview · Article · Mar 2010 · Journal of Materials Processing Technology
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