Characterizing Polyester Fabrics Treated in Electrical Discharges of Radio-Frequency Plasma

Negulescu, Ioan I.; Despa, Simona; Chen, Jonathan; Collier, Billie J.; Despa, Mircea S.; Denes, Agnes R.; Sarmadi, Majid; Dénès, F.

doi:10.1177/004051750007000101

Cited by 55 publications

(22 citation statements)

References 14 publications

(14 reference statements)

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“…The increased flow rate may lead to flushing of the plasma from the chamber, thus reducing the density of activated species. It is well known that ablation and chemical reaction occur simultaneously in the plasma state [3,6,14,19]. At higher exposure times, ablation may dominate surface treatment.…”

Section: Analysis Of Surface Elemental Compositionmentioning

confidence: 99%

Modifying Nylon and Polypropylene Fabrics with Atmospheric Pressure Plasmas

McCord

Hwang

Hauser

et al. 2002

Textile Research Journal

112

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Polypropylene and nylon 66 fabrics are subjected to atmospheric pressure He and He-O 2 plasmas for selected exposure time intervals. Scanning electron microscopy analysis of the fabrics shows no apparent changes in the plasma-treated nylon fiber surfaces, but significant surface morphological changes for the polypropylene. Surface analyses of the nylon filaments reveal small differences in the surface carbon and oxygen contents between the treated and control groups. The surface oxygen and nitrogen content of the polypropylene fabric increases significantly after treatment in both He and He-O 2 plasmas. There is a slight decrease in nylon fabric tensile strength after treatment in He plasma for 3 minutes, while. there is no significant change in tensile strength of the nylon fabric treated with He-O 2 after exposure times of up to 8 minutes.Plasma treatment of textile fabrics and yams is being investigated as an alternative to wet-chemical fabric treatment and pretreatment processes, e.g., shrink resistant (wool) or water-repellent finishing, which tend to alter fabric mechanical properties and are environmentally hazardous. Plasma treatment of textiles may result in desirable surface modifications, including but not limited to surface etching, surface activation. crosslinking, chain scission, decrystallization, and oxidation. Treatment depends on the choice of working gas and plasma density and energy [ 1,3,6,14,17,19]. The effects of low-pressure (vacuum) plasma treatments of polyester, high performance polymers, and wool are well documented [3, 11, 17, 191, while relatively little has been published about atmospheric pressure plasma treatments [4, 14, 171. Despite the effectiveness of plasma treatments on textiles, the inability to successfully incorporate low-pressure plasma treatment equipment into a continuous textile finishing operation has seriously limited the commercial viability of the technique [ 11 ]. Previously, plasmas generated at atmospheric pressure were believed to be neither uniform nor stable: however, recent research on atmospheric plasmas has shown their uniformity, stability, and applicability to processing and treatment of textiles, as well as many other materials [2]. In addition, atmospheric pressure plasma treatment devices can be integrated with continuous on-line processing of textile materials.While plasma treatment may result in many favorable or desirable surface modifications of textile materials. it may also cause undesirable physical degradation of the polymer surface [5,10,11 ]. Treatment parameters must be optimized in order to achieve desirable surface modifications without changing bulk properties. This paper presents results on polypropylene and nylon 66 fabrics treated with atmospheric plasmas of helium (He) and a mixture of helium and oxygen (He-02). Helium is typically used to initiate and generate the plasma at atmospheric pressure before another gas is introduced to the system. If there are no measurable changes in surface or mechanical properties as a result of e...

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Section: Analysis Of Surface Elemental Compositionmentioning

confidence: 99%

Modifying Nylon and Polypropylene Fabrics with Atmospheric Pressure Plasmas

McCord

Hwang

Hauser

et al. 2002

Textile Research Journal

112

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“…Low energy plasma interaction with the material occurs only on superficial level, so it only modifies a nanometric surface layer of the material and do not modify the bulk propriety of the material 7,8 . Therefore plasma technique is an important alternative to treat the surface of the textile materials, as it eliminates processing with water and use of chemical reagents [9][10][11][12] .…”

Section: Introductionmentioning

confidence: 99%

Evaluation of Aging in Air of Poly (Ethylene Terephthalat) in Oxygen Plasma

et al. 2015

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Polyester fabric samples -PET (poly (ethylene terephtalate)), were treated with oxygen plasma, in order to alter the hydrophilicity of such material. The process parameters: working pressure, current, tension and temperature were kept constant, varying only the treatment time. In order to evaluate the change caused on samples hydrophilicity, as well as the influence of the treatment time, the vertical wicking test was used. The samples were stored at standard temperature and pressure conditions, and their wettability were measured one day after the treatment and repeated after 30, 60 and 360 days, in order to check the stability of the effects produced. Scanning electron microscopy (SEM), Raman and ATR (Attenuated total reflection) spectroscopies were used to evaluate physical and chemical alterations on the samples surface. The results have shown a substantial improvement on the hydrophilicity of the treated samples compared to the non-treated sample.

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“…The results show that the surface parameters are considerably modified by the treatment (85) . Low-pressure glow discharges are efficient in generating uniform plasmas.…”

Section: Plasma Treatmentmentioning

confidence: 94%