Characterization of Antibacterial, Mechanical, and Structural Properties of Polyvinyl Chloride/Silver Nitrate Composites Prepared by Thermoplastic Compounding

Merchan, Martha; Sedlaříková, Jana; Vesel, Alenka; Sedlařík, Vladimír; Pastorek, Miroslav; Sáha, Petr

doi:10.1080/1023666x.2010.500534

Cited by 9 publications

(6 citation statements)

References 28 publications

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“…These stripes are characterized by a lower percentage of Cl and C, and conversely, a higher percentage of O compared to clear areas. Thus, it was assumed that the intensity of the C-Cl bond decay and the formation of polar functional bonds on the matte surface proceeded at a higher rate than on the clear surface [63,64]. From this point of view, it is important in which position the sample is placed on the burning plasma, because the modification achieves two types of surfaces, each with a different material characteristic.…”

Section: Comparison Of Change In Pvc I Ii Iii Iv Samplesmentioning

confidence: 99%

DMA Analysis of Plasma Modified PVC Films and the Nature of Initiated Surface Changes

et al. 2022

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The application of DCSBD (Diffuse Coplanar Surface Barrier Discharge) plasma is referred to as the surface modification/activation of materials. The exposure of material surfaces to DCSBD plasma is initiated by changes in their chemical composition, surface wettability and roughness. The given study presents the mentioned plasma application in the context of the modification of the material viscoelastic properties, namely the PVC polymer film. The measurement of viscoelastic properties changes of PVC was primarily examined by a sensitive thermal method of dynamic-mechanical analysis. This analysis allows identifying changes in the glass transition temperature of PVC, before and after DCSBD plasma application, Tangens Delta, supported by glass transition temperatures of Elastic and Loss modulus. The results of the present study prove that DCSBD plasma applied on both sides to PVC surfaces causes changes in its viscoelastic properties. In addition, these changes are presented depending on the variability of the material position, with respect to the winding of the electrodes in the ceramic dielectric generating the DCSBD plasma during modification. The variability of the PVC position holds an important role, as it determines the proportion of filamentous and diffuse components of the plasma that will interact with the material surface during modification. The application of DCSBD plasma must, therefore, be considered a complex modification of the material, and as a result, non-surface changes must also be considered.

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Section: Comparison Of Change In Pvc I Ii Iii Iv Samplesmentioning

confidence: 99%

DMA Analysis of Plasma Modified PVC Films and the Nature of Initiated Surface Changes

et al. 2022

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“…Another advantage of these materials could be their relatively mild effect in contrast to the application of soluble mineral salts as additives, although these simple compounds are very efficient against bacteria. Composite materials based on AgNO 3 and ZnNO 3 additives were successfully prepared and their efficiency was proven by standard zone inhibition—“Halo”—tests on agar plates . Large diameters of the observed inhibition zones testify for a diffusion of the active agent over a relatively long distance; however, this could cause inevitable damage to the patient's tissue in proximity to the inserted device made from such material as silver cations at a high concentration are toxic for mammalian cells .…”

Section: Introductionmentioning

confidence: 99%

Microwave‐assisted synthesis of Ag/ZnO hybrid filler, preparation, and characterization of antibacterial poly(vinyl chloride) composites made from the same

et al. 2013

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Hybrid silver/zinc oxide (Ag/ZnO) nanostructured microparticles were obtained via the fast and simple microwave-assisted synthesis. The phase structure of filler particles was revealed by X-ray diffraction analysis. Composites with medical-grade poly(vinyl chloride) were prepared with filler concentration from 1 to 5 wt%. The scanning electron microscopy was used for morphology characterization and elemental analysis of both filler and composites. The mechanical properties of composites and the electrical resistivity were found suitable for medical device application. The excellent surface antibacterial performance of the prepared composite tested according to ISO 22196:2007 against Escherichia coli and Staphylococcus aureus showed the reliability of the material in the medical application field. POLYM. COMPOS., 00:000-000,

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“…These coatings mechanically behave as rigid elastomers presenting a tensile strength of around 420 kPa, a Young’s modulus of around 48 kPa and a maximum elongation of around 12%. The determined mechanical properties clearly state that these materials are suitable for this application [ 16 ], presenting mechanical robustness that allows the coating to resist to its practical usage.…”

Section: Resultsmentioning

confidence: 99%

Novel coating containing molybdenum oxide nanoparticles to reduce Staphylococcus aureus contamination on inanimate surfaces

Piçarra¹,

Lopes²,

Almeida³

et al. 2019

PLoS ONE

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We previously synthetized molybdenum oxide (MoO3) nanoparticles (NP) and showed their antibacterial activity against a representative collection of the most relevant bacterial species responsible for hospital-acquired infections, including Staphylococcus aureus. The aim of the present study was to prepare and characterize a novel coating with these MoO3 NP, confirm its mechanical stability, and investigate its biocidal effect to reduce S. aureus contamination on inanimate surfaces. In addition, the novel MoO3 NP coating was compared to a silver (Ag) NP coating synthetized by the same procedure. The MoO3 and Ag NP coatings were characterized in terms of their chemical structure by FT-IR, surface morphology by scanning electron microscopy, and mechanical properties by tensile and adhesion tests. The antimicrobial activity of the coatings was tested by following the loss of viability of S. aureus after 6h, 24h, 48h, and 72h exposure. MoO3 and Ag coatings exhibited surfaces of comparable morphologies and both presented elastomeric properties (tensile strength of ~420 kPa, Young’s modulus of ~48 kPa, and maximum elongation of ~12%), and excellent (classification of 5B) adhesion to glass, steel and polystyrene surfaces. The two coatings exhibited a good antibacterial activity (R) against S. aureus over time (RMoO3 = 0.2–0.81; RAg = 0.61–2.37), although the effect of the Ag NP coating was more pronounced, especially at 72h (RMoO3 = 0.81 vs RAg = 2.37). Noteworthy, contrary to the Ag NP coating, the MoO3 NP coating was colourless and transparent, avoiding undesired unaesthetic effects. The synthetized coating with NP of MoO3, which has low toxicity to humans, capability of biodegradation, and rapid excretion, can be applied onto most standard materials and therefore is a promising tool to reduce S. aureus contamination on usual inanimate surfaces found in healthcare and community environments.

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Characterization of Antibacterial, Mechanical, and Structural Properties of Polyvinyl Chloride/Silver Nitrate Composites Prepared by Thermoplastic Compounding

Cited by 9 publications

References 28 publications

DMA Analysis of Plasma Modified PVC Films and the Nature of Initiated Surface Changes

DMA Analysis of Plasma Modified PVC Films and the Nature of Initiated Surface Changes

Microwave‐assisted synthesis of Ag/ZnO hybrid filler, preparation, and characterization of antibacterial poly(vinyl chloride) composites made from the same

Novel coating containing molybdenum oxide nanoparticles to reduce Staphylococcus aureus contamination on inanimate surfaces

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