A5054603538- Surface Modification and Superhydrophobicity
- Plasma Diagnostics and Applications
- Plasma Applications and Diagnostics
- Diamond and Carbon-based Materials Research
- Electrospun Nanofibers in Biomedical Applications
- Electrohydrodynamics and Fluid Dynamics
- Advanced Sensor and Energy Harvesting Materials
- Metal and Thin Film Mechanics
- Polymer Surface Interaction Studies
- Gas Sensing Nanomaterials and Sensors
- Nanocomposite Films for Food Packaging
- Ion-surface interactions and analysis
- Microplastics and Plastic Pollution
- Catalytic Processes in Materials Science
- Advanced Cellulose Research Studies
- Semiconductor materials and devices
- High voltage insulation and dielectric phenomena
- Graphene research and applications
- Recycling and Waste Management Techniques
- Nanoparticles: synthesis and applications
- Antimicrobial agents and applications
- Analytical Chemistry and Sensors
- High-Temperature Coating Behaviors
- Carbon Nanotubes in Composites
- Vibration Control and Rheological Fluids
Jožef Stefan Institute
2016-2025
Jožef Stefan International Postgraduate School
2011-2021
University of Ljubljana
2021
PoliMaT Centre of Excellence (Slovenia)
2011-2013
University of Maribor
2013
National Institute of Chemistry
2013
Centre National de la Recherche Scientifique
2010
Plasma (Russia)
2008
Abstract In this paper, we present a study on the surface modification of polyethyleneterephthalate (PET) polymer by plasma treatment. The samples were treated nitrogen and oxygen for different time periods between 3 90 s. was created radio frequency (RF) generator. gas pressure fixed at 75 Pa discharge power set to 200 W. in glow region, where electrons temperature about 4 eV, positive ions density 2 × 10 15 m −3 , neutral atom 21 1 nitrogen. changes morphology observed using atomic force...
Gold nanoparticles (AuNPs) have been investigated as a promising reagent for cancer therapy in various fields. In the meantime, cold atmospheric plasma has shown exquisite selectivity towards cells. this paper, we demonstrate that there is synergy between gold and therapy. Specifically, concentration of AuNPs plays an important role on At optimal concentration, can significantly induce glioblastoma (U87) cell death up to 30% overall increase compared control group with same dosage but no...
Abstract In order to study the role of polymer crystallinity, we performed oxygen plasma treatment experiments on amorphous and semicrystalline poly(ethylene terephthalate) (PET) polymers. The samples were treated in weakly ionized, highly dissociated RF glow region for different exposure times. We found that degree crystallinity has an influence recombination probability neutral atoms which interact with surface. For polymers coefficient is range from 8.3 × 10 −4 2.1 4 2.5 −5 . processing...
The behavior of amorphous cellulose model thin films upon heat treatment is investigated. Upon treatment, a structural rearrangement in the from featureless to fibrillar structure observed which correlates with regeneration time and total content as proven by atomic force microscopy X-ray photoelectron spectroscopy. ATR-IR spectroscopy proves presence stronger hydrogen bonds treated surfaces originate reorganization chains pore structure. accompanied an increased surface hydrophobicity,...
The present paper reports a novel method to improve the properties of polyethylene (PE) and polypropylene (PP) polymer foils suitable for applications in food packaging. It relates adsorption chitosan-colloidal systems onto untreated oxygen plasma-treated foil surfaces. is hypothesized that first coated layer chitosan macromolecular solution enables excellent antibacterial properties, while second (uppermost) contains network polyphenol resveratrol, embedded into nanoparticles, which...
A suitable technique for localized surface treatment of solid materials is an atmospheric pressure plasma jet (APPJ). The properties the APPJ often depend on small details like concentration gaseous impurities what influences kinetics. simplest and most useful configuration presented, characterized by optical emission spectroscopy (OES), results are discussed in view various papers. Furthermore, additional recent papers characterization OES presented as well. Because operating at pressure,...
Self-limiting surface reactions are promising for atomic layer etching of materials. Classical treatments with plasmas do not allow self-limiting functionalization but cause the formation several functional groups and degradation. To avoid this, polystyrene was oxidized in plasma afterglow O-atom density 7 × 1017 m−3 dissociation fraction 7%. X-ray Photoelectron Spectroscopy used to study various oxygen versus dose. The saturated OH already after dose 1 1019 m−2, indicating a large initial...
Abstract A study on surface modification of extended PTFE (polytetrafluoroethylene) foil after treatment in oxygen and nitrogen plasma is presented. was exposed to a weakly ionized, highly dissociated RF with high density neutral atoms. The gas pressure 75 Pa the discharge power 200 W. appearance functional groups sample determined by using high‐resolution XPS. results showed that did not cause any noticeable changes composition, while new were detected surface. Copyright © 2008 John Wiley...
Medical-grade polyvinyl chloride was coated by polysaccharides through a novel physicochemical approach. An initial surface activation performed foremost via diffuse coplanar barrier discharge plasma in air at ambient temperature and pressure. Then, radical graft copolymerization of acrylic acid grafting-from pathway directed to render well-defined brush high density, finally chitosan monolayer chitosan/pectin alternating multilayer were bound onto the functionalized surfaces. Surface...
Polyethylene (PE) is one of the most widely used polymers in many industrial applications. Biomedical uses seem to be attractive, with increasing interest. However, PE it prone infections and its additional surface treatment indispensable. An increase resistance can achieved by treating surfaces substances containing antibacterial groups such as triclosan (5-Chloro-2-(2,4-dichlorophenoxy)phenol) chlorhexidine (1,1'-Hexamethylenebis[5-(4-chlorophenyl)biguanide]). This work has examined impact...