Surface fluorination of polystyrene particles via CF4 plasma irradiation using a barrel-plasma-treatment system

This review provides a comprehensive overview of scientific research on plasma treatment of polymer powders over the last 40 years. The current state of the art is described with special focus on basic research in the laboratory and commercially available technologies in industrial applications. Different reactor systems with low‐pressure and atmospheric pressure plasma are presented. Then, numerous application examples of plasma‐treated polymer powders are presented together with a brief overview of the experimental test results. Furthermore, the effects of the process parameters on the final properties of the polymer powders are discussed. Attempts are made to determine similarity parameters and correlations between the generated surface functionalities. Finally, some suggestions for future research are given.

Section: Studies On Low‐pressure Plasma Reactorsmentioning

confidence: 99%

Plasma treatment of polymer powders – from laboratory research to industrial application

Arpagaus

Oberbossel

Rohr

2018

“…The application of plasma processes for modification of particles presents several challenges, including delivery of the particles, uniform surface exposure, and consistent exposure time for all particles. Plasma processes have been used in recent decades for surface modification of particles . Studies have shown increases in hydrophilicity and hydrophobicity, as well as deposition of plasma‐polymerized nanocoatings .…”

Section: Introductionmentioning

confidence: 99%

Atmospheric Plasma Surface Modification of PMMA and PP Micro‐Particles

Gilliam

Farhat

Zand

et al. 2014

Chemical surface modification of polymethylmethacrylate (PMMA) and polypropylene (PP) particles was achieved using a continuous atmospheric plasma process, resulting in increased oxidation and hydrophilicity. Contact angles of treated PMMA ranged from 79–117° (125° for untreated). Air plasma produced higher contact angles than pure nitrogen, which is attributed to primary surface degradation from oxygen. Higher energy and flow rate of water resulted in decreased contact angles. Treated PP mixed in water upon agitation, while untreated PP remained at the surface. X‐ray photoelectron spectroscopy (XPS) showed increased CO and CO for treated samples. The addition of 10% hydroxyethylmethacrylate (HEMA) to water showed a slight decrease in contact angle, but no difference from pure water in XPS results.

“…The application of plasma processes for modification of polymer micro‐sized particles and spheres are widely used in biotechnology, cosmetics, coatings, and composites . These surfaces are often non‐planar and rough, as in tissue scaffolding and drug delivering micro‐beads .…”

Section: Plasma‐based Surface Treatmentmentioning

confidence: 99%

“…These surfaces are often non‐planar and rough, as in tissue scaffolding and drug delivering micro‐beads . Chemical modification of the surface of polymer particles can improve their hydrophilicity and hydrophobicity, as well as deposition of plasma‐polymerized nanocoatings . In experiment chemical surface modification of polymethylmethacrylate and polypropylene particles was achieved using a continuous atmospheric plasma process, resulting in increased hydrophilicity.…”

Section: Plasma‐based Surface Treatmentmentioning

confidence: 99%

Hybrid and Fluid Modeling of Ion Activation Energy and Reactive Fluxes to Particulates Suspended in Air and Residing on Surfaces

Babaeva

2016

We report on a computational study of the intersection of plasma filaments in a dielectric barrier discharge with small particulates suspended in air or residing on surfaces. The relative location of the particle with respect to the streamer axis is important on plasma time scale considered in the paper. The particulates residing on the substrate surface are partially enveloped by the sheath formed beneath the filament and the substrate. Ion energies and fluxes incident on the particulate depend on dielectric properties of the underlying substrate materials.