Low‐pressure plasma treatment for hydrophilization of poly(ethylene terephthalate) fabrics

Gouveia, Isabel C.; Antunes, Laura; Gomes, Ana P.

doi:10.1080/00405001003616777

Cited by 12 publications

(8 citation statements)

References 23 publications

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“…Untreated PP fibers have smooth surfaces while plasma-treated PP fibers showed rougher surfaces with increased plasma power and treatment times. Plasma-induced roughening was also observed on the PP fiber surfaces in previous studies [3,19,36,37]. The rough surface formed on the fiber surface contributed to the better adhesion of the coated adhesive.…”

Section: Sem Analysissupporting

confidence: 62%

Adhesion strength behaviour of plasma pre-treated and laminated polypropylene nonwoven fabrics using acrylic and polyurethane-based adhesives

Armağan

Kayaoğlu

Karakas

et al. 2012

Journal of Industrial Textiles

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The adhesion strength enhancement of oxygen plasma pre-treated laminated polypropylene nonwoven fabrics using two different types of adhesives was investigated in this study. Fabric surface modification was performed using low-pressure, radio-frequency oxygen plasma treatment. Effect of plasma treatment on fabric surface wettability was determined by vertical wicking measurements. Wettability of highly hydrophobic polypropylene nonwoven samples dramatically increased with increasing plasma power and exposure time. Plasma-treated polypropylene fibers showed rougher surfaces with increased plasma power and treatment times. X-ray photoelectron spectroscopy (XPS) analysis showed that oxygen plasma treatment of polypropylene fiber surface led to a significant increase in atomic percentage of oxygen compound responsible for hydrophilic surface. Peel strength enhancement of produced laminated fabrics was observed for plasma-treated samples compared to untreated samples. PU-based adhesive attached on the surface of both plasma-treated and untreated polypropylene nonwoven, filling the spaces between the fibers due to the penetration of the adhesive agent. The improvement in surface wettability of polypropylene nonwoven and the introduced sites through oxygen plasma treatment resulted in good adhesive bonding. For both adhesives, peel strength improvement of produced laminated fabrics was

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Section: Sem Analysissupporting

confidence: 62%

Adhesion strength behaviour of plasma pre-treated and laminated polypropylene nonwoven fabrics using acrylic and polyurethane-based adhesives

Armağan

Kayaoğlu

Karakas

et al. 2012

Journal of Industrial Textiles

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“…In this way, it may happen that in the limit a sample of antimicrobial wool may present a resistance of 30,000 cycles in comparison with the control in which the minimum resistance can be up to 31,000 cycles. This represents less than 4% of loss of resistance by the action of L ‐Cys under the evaluated conditions meaning that there is no significant loss of resistance of wool, as described elsewhere 22…”

Section: Resultsmentioning

confidence: 99%

“…This represents less than 4% of loss of resistance by the action of L-Cys under the evaluated conditions meaning that there is no significant loss of resistance of wool, as described elsewhere. 22 The surface morphology of the biofunctionalized wool was observed against a control with a scanning electron microscope. Images indicated in Figure 4 clearly show no evidence of surface alteration or damage.…”

Section: Assessment Of Wool Damagementioning

confidence: 99%

Functionalization of wool with L‐cysteine: Process characterization and assessment of antimicrobial activity and cytotoxicity

Gouveia

Sá

Henriques

2011

J of Applied Polymer Sci

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This investigation reports a new biotechnological process that uses L-cysteine (L-Cys) which provides a permanent, nontoxic and effective antimicrobial effect over wool-based materials. This process is simple and carried out via widespread exhausting methods. Typically, wool fabrics are incubated with L-Cys for 50 min at 60 C in a pH 4.8 acetate buffer solution 25 mM, under mild agitation to give a good absorption rate. The minimal inhibitory concentration (MIC) of L-Cys was evaluated by the NCCLS M07-A6 standard method, and the results showed a good antibacterial activity against S. aureus and K. pneumoniae within the range of 6.0 Â 10 À3 À 4.8 Â 10 À2 g/mL [MIC 0.6% (w/v)] and 6.0 Â 10 À3 À 4.8 Â 10 À2 g/mL [MIC 0.6% (w/v)], respectively. In addition, the antimicrobial activity of the functionalized wool was assessed by the international standard JIS 1902JIS -2002 showing a good inhibition of bacterial growth for an L-Cys concentration of 1% over the weight of fabric, both against Staphylococcus aureus and Klebsiella pneumoniae. Moreover, the biocidal mechanism was found to be related with the increase of sulfhydryl's groups onto wool fibers, which were quantified by the Ellman's reagent (5,5 0 -Dithio-bis(2-nitrobenzoic acid) method. The new process is easy to perform, non toxic, preserve wool quality and is a novel biomimetic approach that uses antimicrobial amino acids and may open new avenues for the design of biomedical textiles with a broad range of applications in healthcare.

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“…However, in search of "greener" technologies, plasma techniques in all variations of gas type, power etc. (Gouveia et al 2011;Lei et al 2011;Lopez-Santos et al 2010;Parvinzadeh et al 2011) seem to be preferred, while enzymatic treatments (Akkaya et al 2011;Donelli et al 2009;Kardas et al 2011) are gaining interest. Furthermore, the attention for functionalization has shifted in the recent years towards localized modifications, such as photo-grafting or immobilization of functional groups and polymers on specific reactive sites of the substrate (Ito et al 2007;Vladkova 2010).…”

Section: An Overview Of Polyester Functionalization Techniquesmentioning

confidence: 99%

“…Main objectives of the above forms of polyester functionalization include enhancement of its hydrophilicity (Gouveia et al 2011;Sawada et al 2003), wettability (Bessada et al 2011;Huang et al 2009), dyeability (Hossain et al 2009;Kamel et al 2011), electrical conductivity (Jin et al 2006;Mazinani et al 2010), biodegradability (Xing et al 2011), and addition of new functionalities for e.g. substance entrapment and/or controlled release (Boyd et al 1993;Drobota et al 2010;Kaetsu et al 1999).…”

Section: An Overview Of Polyester Functionalization Techniquesmentioning

confidence: 99%

Advanced microgel-functionalized polyester textiles adaptive to ambient conditions

Glampedaki¹

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Low‐pressure plasma treatment for hydrophilization of poly(ethylene terephthalate) fabrics

Cited by 12 publications

References 23 publications

Adhesion strength behaviour of plasma pre-treated and laminated polypropylene nonwoven fabrics using acrylic and polyurethane-based adhesives

Adhesion strength behaviour of plasma pre-treated and laminated polypropylene nonwoven fabrics using acrylic and polyurethane-based adhesives

Functionalization of wool with L‐cysteine: Process characterization and assessment of antimicrobial activity and cytotoxicity

Advanced microgel-functionalized polyester textiles adaptive to ambient conditions

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