Plasma Deposition of Permanent Superhydrophilic a‐C:H:N Films on Textiles

Hossain, Mohammad Mokbul; Hegemann, Dirk; Fortunato, Giuseppino; Herrmann, Axel S.; Heuberger, Manfred

doi:10.1002/ppap.200600214

Cited by 30 publications

(22 citation statements)

References 45 publications

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“…The functionality of the a-C : H : N nanocomposites can mainly be influenced by the gas ratio of NH 3 / C 2 H 4 in the plasma reactor, while the nitrogen incorporation is independent of the power input in the range of 8-50 W [11,33]. With the asymmetric reactor set-up it is possible to incorporate Ag nanoparticles into the growing functional plasma polymer matrix.…”

Section: Discussionmentioning

confidence: 99%

Antibacterial burst-release from minimal Ag-containing plasma polymer coatings

Lischer

Körner

Balazs

et al. 2011

J. R. Soc. Interface.

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Biomaterials releasing silver (Ag) are of interest because of their ability to inhibit pathogenic bacteria including antibiotic-resistant strains. In order to investigate the potential of nanometre-thick Ag polymer (Ag/amino-hydrocarbon) nanocomposite plasma coatings, we studied a comprehensive range of factors such as the plasma deposition process and Ag cation release as well as the antibacterial and cytocompatible properties. The nanocomposite coatings released most bound Ag within the first day of immersion in water yielding an antibacterial burst. The release kinetics correlated with the inhibitory effects on the pathogens Pseudomonas aeruginosa or Staphylococcus aureus and on animal cells that were in contact with these coatings. We identified a unique range of Ag content that provided an effective antibacterial peak release, followed by cytocompatible conditions soon thereafter. The control of the in situ growth conditions for Ag nanoparticles in the polymer matrix offers the possibility to produce customized coatings that initially release sufficient quantities of Ag ions to produce a strong adjacent antibacterial effect, and at the same time exhibit a rapidly decaying Ag content to provide surface cytocompatibility within hours/days. This approach seems to be favourable with respect to implant surfaces and possible Ag-resistance/tolerance built-up.

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Section: Discussionmentioning

confidence: 99%

Antibacterial burst-release from minimal Ag-containing plasma polymer coatings

Lischer

Körner

Balazs

et al. 2011

J. R. Soc. Interface.

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“…To this end, the substitution of proteins or peptides by functional groups generated in wet-chemical or plasma-based processes presents a versatile advantage. Adapted process parameters during plasma polymerization allow for tissue specific functionalities and the formation of stable surface coatings [16,33,34].…”

Section: Introductionmentioning

confidence: 99%

Plasma-functionalized electrospun matrix for biograft development and cardiac function stabilization

et al. 2014

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Cardiac tissue engineering approaches can deliver large numbers of cells to the damaged myocardium and have thus increasingly been considered as a possible curative treatment to counteract the high prevalence of progressive heart failure after myocardial infarction (MI). Optimal scaffold architecture and mechanical and chemical properties, as well as immune-and bio-compatibility, need to be addressed. We demonstrated that radio-frequency plasma surface functionalized electrospun poly (e-caprolactone) (PCL) fibres provide a suitable matrix for bone-marrow-derived mesenchymal stem cell (MSC) cardiac implantation. Using a rat model of chronic MI, we showed that MSC-seeded plasma-coated PCL grafts stabilized cardiac function and attenuated dilatation. Significant relative decreases of 13% of the ejection fraction (EF) and 15% of the fractional shortening (FS) were observed in sham treated animals; respective decreases of 20% and 25% were measured 4 weeks after acellular patch implantation, whereas a steadied function was observed 4 weeks after MSC-patch implantation (relative decreases of 6% for both EF and FS).

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“…Surface hydrophilicity was greatly enhanced, as shown in Fig. 7, due to the addition of polar functional groups (Hossain et al, 2007c). The Fig.…”

Section: Wicking Property Improvementmentioning

confidence: 89%

“…The structural modification of a-C:H films by the addition of nitrogen to the hydrocarbon precursor yielded hydrophilic functional sites (mainly amine functionalities) in a-C:H:N coatings (Hossain et al, 2007c). The a-C:H:N films become more graphitic and the density of voids increases with the incorporation of nitrogen and/or nitrogen functionalities in the coating (Cuong et al, 2005;Freire et al, 1995).…”

Section: Nanoporous Functionalized Filmsmentioning

confidence: 99%