Helium/oxygen atmospheric pressure plasma treatment on poly(ethylene terephthalate) and poly(trimethylene terephthalate) knitted fabrics: Comparison of low-stress mechanical/surface chemical properties

Hwang, Yoon J.; McCord, Marian; Kang, Bok Choon

doi:10.1007/bf02875601

Cited by 17 publications

(14 citation statements)

References 18 publications

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“…The atmospheric pressure audio frequency glow discharge system used was designed and developed at North Carolina State University as shown in Figure 4. 25 Helium was the plasma carrier gas and used to create active species in the plasma. The sample loading area was a fixed stage where the samples were mounted in the middle of the plasma chamber for uniform treatment on all sides.…”

Section: Surface Functionalizationmentioning

confidence: 99%

Novel genipin‐collagen immobilization of polylactic acid (PLA) fibers for use as tissue engineering scaffolds

et al. 2014

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The material surface plays an important role in the case of biomaterials used as tissue engineering scaffolds. On exposure to a biological environment, extra cellular matrix (ECM) proteins are adsorbed non-specifically onto the surface and cells interact indirectly with the surface through the adsorbed proteins. Most synthetic polymeric biomaterials lack the desirable surface properties for cells as well as have poor cellular adhesion due to their hydrophobic nature. The main objective of this study was to harness surface functionalization technologies to fabricate scaffolds that would be biocompatible and support the adhesion and proliferation of fibroblast cells. The collagen was immobilized on the surface of functionalized PLA via a novel natural cross-linking molecule genipin which resulted in improved cell proliferation of human dermal fibroblasts as compared to the PLA surface coated with collagen without genipin. It is believed that genipin helps reduce steric problems between the functional groups and large protein molecules, and enables immobilized peptide to move more freely in a biological environment.

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Section: Surface Functionalizationmentioning

confidence: 99%

Novel genipin‐collagen immobilization of polylactic acid (PLA) fibers for use as tissue engineering scaffolds

et al. 2014

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“…Atmospheric plasma treatment is a facile, effective, environmentally friendly surface modification method that requires no wet chemistry and high temperature. It was shown that plasma treatment can (a) improve surface bonding or adhesive ability [25,26], (b) increase mechanical strength by crosslinking [26][27][28], (c) change fiber surface hydrophobicity [29], (d) roughen fiber surfaces [28,30], and (e) increase crystallinity [25][26][27][29][30][31]. Recently researchers are exploring ways to improve mechanical stability and handling properties of nanofiber webs [32,33] by atmospheric plasma treatment.…”

Section: Introductionmentioning

confidence: 99%

Plasma-Assisted Preparation of High-Performance Chitosan Nanofibers/Gauze Composite Bandages

Nawalakhe

Shi

Vitchuli

et al. 2015

International Journal of Polymeric Materials and Polymeric Biom

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In this work, novel composite bandages were prepared by electrospinning chitosan nanofibers on 100% cotton substrate fabric. In the composite bandages, chitosan nanofiber web serves as a primary wound dressing whereas cotton substrate as a backing material. Cotton substrate was given plasma pretreatment and composite bandages were given plasma posttreatment to improve the durability of composite bandages and adhesion between nanofiber and cotton substrate layers. The adhesion of the nanofibers to the substrates was assessed by qualitative and quantitative techniques. Plasma pretreatment of the substrate with 100% helium and 99% helium=1% oxygen plasmas showed up to four times increase in force required to peel off the nanofiber layer. Even more increase in adhesion was obtained when composite bandages were given plasma pretreatment to substrate as well as posttreatment to composite bandages. Storage modulus, glass transition temperature, and crystallinity of untreated He and He=O 2 -plasma treated chitosan nanofiber web were studied to observe the effect of plasma treatment on the chitosan nanofibers using dynamic mechanical analysis, differential scanning calorimetry, and wide angle X-ray diffraction, respectively. To understand the mechanism of improved adhesion, surface elemental analysis of plasma treated chitosan nanofibers and cotton substrate was carried out using X-ray photoelectron spectroscopy.

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“…In our previous studies, atmospheric pressure plasma technology has been used to modify the structures and properties of various materials (especially textile materials). We have shown that plasma treatment can: (i) improve surface bonding or adhesive ability,20, 21 (ii) increase mechanical strength by crosslinking,20–24 (iii) change fiber surface hydrophobicity,25 (iv) roughen fiber surfaces,26 (v) increase crystallinity 26,27. Recently, Vitchuli et al18 successfully employed atmospheric plasma treatment to improve the adhesion between nylon nanofibers and nylon/cotton fabric substrates.…”

Section: Introductionmentioning

confidence: 99%

Novel atmospheric plasma enhanced chitosan nanofiber/gauze composite wound dressings

Nawalakhe

Shi

Vitchuli

et al. 2013

J of Applied Polymer Sci

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Electrospun chitosan nanofibers were deposited onto atmospheric plasma treated cotton gauze to create a novel composite bandage with higher adhesion, better handling properties, enhanced bioactivity, and moisture management. Plasma treatment of the gauze substrate was performed to improve the durability of the nanofiber/gauze interface. The chitosan nanofibers were electrospun at 3–7% concentration in trifluoroacetic acid. The composite bandages were analyzed using peel, gelbo flex, antimicrobial assay, moisture vapor transmission rate, X‐ray photoelectron spectroscopy (XPS), absorbency, and air permeability tests. The peel test showed that plasma treatment of the substrate increased the adhesion between nanofiber layers and gauze substrate by up to four times. Atmospheric plasma pretreatment of the gauze fabric prior to electrospinning significantly reduced degradation of the nanofiber layer due to repetitive flexing. The chitosan nanofiber layer contributes significantly to the antimicrobial properties of the bandage. Air permeability and moisture vapor transport were reduced due to the presence of a nanofiber layer upon the substrate. XPS of the plasma treated cotton substrate showed formation of active sites on the surface, decrease in carbon content, and increase in oxygen content as compared to the untreated gauze. Deposition of chitosan nanofibers also increased the absorbency of gauze substrate. © 2013 Wiley Periodicals, Inc. J. Appl. Polym. Sci., 2013

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Helium/oxygen atmospheric pressure plasma treatment on poly(ethylene terephthalate) and poly(trimethylene terephthalate) knitted fabrics: Comparison of low-stress mechanical/surface chemical properties

Cited by 17 publications

References 18 publications

Novel genipin‐collagen immobilization of polylactic acid (PLA) fibers for use as tissue engineering scaffolds

Novel genipin‐collagen immobilization of polylactic acid (PLA) fibers for use as tissue engineering scaffolds

Plasma-Assisted Preparation of High-Performance Chitosan Nanofibers/Gauze Composite Bandages

Novel atmospheric plasma enhanced chitosan nanofiber/gauze composite wound dressings

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