Effect of absorbed moisture on the atmospheric plasma etching of polyamide fibers

Zhu, Lu; Teng, Weihua; Xu, Hanyue; Liu, Yan; Jiang, Qiuran; Wang, Chunxia; Qiu, Yiping

doi:10.1016/j.surfcoat.2007.08.046

Cited by 39 publications

(17 citation statements)

References 37 publications

(37 reference statements)

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“…[3]. As polyethylene is characterized by a marked hydrophobic behavior resulting from its non-polar nature together with very smooth surfaces, it is necessary in many cases to carry out a previous surface treatment to promote the appropriate changes (mainly chemical and surface topography changes) in order to increase surface activity thus enhancing anchorage processes typical of paints, coatings and adhesion joints [4][5][6].…”

Section: Introductionmentioning

confidence: 99%

Improving mechanical performance of thermoplastic adhesion joints by atmospheric plasma

et al. 2013

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Polyethylene (PE) is characterized by low surface energy as a consequence of its non-polar nature. This characteristic is responsible for poor adhesion properties on polyethylene substrates. It is well known that some industrial applications such as coating, painting and formation of adhesion joints require high surface energy to promote good anchorages, so that, the use of polyethylene in these applications needs a previous surface treatment. In this work atmospheric plasma has been used to promote surface activation on polyethylene substrates for improved adhesion properties. The work has been focused on analyzing the influence of some variables (treatment rate and nozzle-sample distance) on mechanical performance of PE-PE adhesion joints subjected to shear and T-peel tests.

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Section: Introductionmentioning

confidence: 99%

Improving mechanical performance of thermoplastic adhesion joints by atmospheric plasma

et al. 2013

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“…According to our previous study on the influence of moisture on the effect of atmospheric pressure plasma treatment, absorbed water plays an important role in the atmospheric pressure plasma treatment of hygroscopic materials 21–24. In particular, influence of moisture content on plasma etching effect has been investigated for polyamide fibers with different amide group content and backbone structures, such as nylon, aramid, and wool 23. It was observed that plasma etching effect was most significant for polyamide fibers conditioned in 100% RH environment.…”

Section: Introductionmentioning

confidence: 99%

Influence of absorbed moisture on antifelting property of wool treated with atmospheric pressure plasma

Peng

Wang

et al. 2009

J of Applied Polymer Sci

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To determine the effect of moisture regain of wool on atmospheric pressure plasma treatment results, wool fibers and fabrics conditioned in 100% relative humidity (RH) and 65% RH were treated by an atmospheric pressure plasma jet with pure helium and helium/oxygen mixed gas, respectively. Scanning electron microscope (SEM) indicated that scales of wool fiber were smoothened for fibers conditioned in the 100% RH. X-ray photoelectron spectroscopy (XPS) showed that carbon content decreased substantially after the plasma treatment. Surface chemical composition of 100% RH conditioned groups changed more significantly than the 65% RH conditioned groups. Water contact angle decreased significantly after the plasma treatments. In shrinkage test, plasma-treated wool fabrics preconditioned in 100% RH showed the lowest shrinkage ratios of 5% and 6%, below 8% is required for machine-washable wool fabrics according to ISO standard.

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“…[16][17][18][19] PECVD or plasma polymerization takes place at the material surface with a wide range of monomer precursors, adding new functionalities or manipulating the surface free energies. 10,12,[20][21][22] The PECVD technique is commonly used together with the plasma etching process in creating superhydrophobic surfaces. 10,12,[22][23][24][25] Surface energy, composed of dispersive and polar components of solid-vapor interaction, can be estimated by the Owens-Wendt's geometric mean method, 26 which measures the contact angles of liquids having different surface tensions.…”

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Contribution of surface energy and roughness to the wettability of polyamide 6 and polypropylene film in the plasma-induced process

Kim

Park

2015

Textile Research Journal

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Plasma-induced etching and chemical vapor coating processes are well-known technologies that modify the wetting properties of polymeric surfaces by engineering the surface roughness and surface energy. The contributing effect of plasma treatment for O 2 etching and hexamethyldisiloxane (HMDSO) vapor coating on the wetting properties was investigated for polyamide 6 (PA6) and polypropylene (PP) substrates. The surface energy components of PA6 and PP were analyzed by the Owens-Wendt model, and were associated with the wettability of water and diiodomethane. With the introduction of roughness by the O 2 etching process without HMDSO coating, the wettability of PA6 substrate was enhanced while that of PP was deteriorated when they were observed after 20 days aging. When the surface was etched for 7 min or longer with the subsequent coating with HMDSO, both PA6 and PP lost hydrophilic property, giving water contact angle of 180 . The wettability was examined for the varied treatment conditions and as a function of average nano-pillar length. This study helps better understand the interactions between the surface energy and roughness of polymeric materials, and their influence on surface wettability. Keywordssurface energy, contact angle, plasma etching, plasma-enhanced chemical vapor deposition, wettability Plasma technology is often utilized to effectively engineer polymeric materials in the uppermost layers of the surface at nano-scale depths, not significantly interfering with the bulk properties of substrate materials.

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Effect of absorbed moisture on the atmospheric plasma etching of polyamide fibers

Cited by 39 publications

References 37 publications

Improving mechanical performance of thermoplastic adhesion joints by atmospheric plasma

Improving mechanical performance of thermoplastic adhesion joints by atmospheric plasma

Influence of absorbed moisture on antifelting property of wool treated with atmospheric pressure plasma

Contribution of surface energy and roughness to the wettability of polyamide 6 and polypropylene film in the plasma-induced process

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