Influence of low-temperature plasma and γ radiation on the surface properties of PET track membranes

2016 ◽  
Vol 7 (5) ◽  
pp. 664-672 ◽  
Author(s):  
E. O. Filippova ◽  
D. A. Karpov ◽  
A. V. Gradoboev ◽  
V. V. Sokhoreva ◽  
V. F. Pichugin
Keyword(s):  
Low Temperature ◽  
Surface Properties ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Γ Radiation ◽  
Track Membranes

Effect of low-temperature plasma treatment and γ-irradiation on the surface properties of thin films based on polylactic acid

2020 ◽  
Vol 6 ◽  
pp. 40-55
Author(s):  
N.M. Ivanova ◽  
◽  
E.O. Filippova ◽  
A.N. Aleinik ◽  
V.F. Pichugin ◽  
...  
Keyword(s):  
Thin Films ◽  
Contact Angle ◽  
Low Temperature ◽  
Polylactic Acid ◽  
Surface Properties ◽  
Polar Component ◽  
Low Temperature Plasma ◽  
Plasma Exposure ◽  
Γ Irradiation ◽  
Temperature Plasma

Effects of the low-temperature plasma exposure, γ-irradiation, and joint g-irradiation and plasma exposure on the structure and surface properties of thin films based on polylactic acid (PLA) have been investigated. Films were obtained by the method a solvent-casting. It has been shown that films based on polylactic acid have topographically different sides: a smoother inner side and embossed outer one. PLA films have properties close to those hydrophobic, with a contact angle in the range of 70°-73° regardless of the surface side and belong to a weakly polar materials. The combined effect of plasma and gamma radiation slightly changes the surface topography. The effect of low-temperature plasma on the surface of the films leads to a decrease in the contact angle by 13°-55° (9-11%) and an increase in surface energy due to the polar component. The results of in vivo experiments on rabbits are presented. Biomicroscopy, optical coherence tomography, morphological and electron microscopic examination of the cornea after implantation of initial and radiation and plasma treated films showed that implantation of the films in the anterior chamber is not accompanied by a pronounced inflammatory reaction and increased intraocular pressure, while maintaining the morphological structure of the cornea almost unchanged.

scholarly journals Effect of Low-Temperature Plasma Nitriding on Corrosion and Surface Properties of Duplex Stainless Steel UNS S32205

2020 ◽  
Vol 29 (4) ◽  
pp. 2612-2622
Author(s):  
Yamid E. Núñez de la Rosa ◽  
Oriana Palma Calabokis ◽  
Paulo César Borges ◽  
Vladimir Ballesteros Ballesteros
Keyword(s):  
Stainless Steel ◽  
Low Temperature ◽  
Duplex Stainless Steel ◽  
Surface Properties ◽  
Plasma Nitriding ◽  
Low Temperature Plasma ◽  
Temperature Plasma

scholarly journals Improvement technologies of surface properties in products with complex geometry by low-temperature plasma impact

2017 ◽  
Vol 2 (8) ◽  
pp. 24-29 ◽  
Author(s):  
Борис Бржозовский ◽  
Boris Brzhozovskiy ◽  
Елена Зинина ◽  
Elena Zinina ◽  
Владимир Мартынов ◽  
...  
Keyword(s):  
Low Temperature ◽  
Surface Properties ◽  
Complex Geometry ◽  
Film Formation ◽  
Low Temperature Plasma ◽  
Complex Profile ◽  
Special Equipment ◽  
Temperature Plasma ◽  
Metal Products ◽  
The Impact

Technologies ensuring the surface properties improvement of complex-profile products by the impact of low-temperature plasma of a combined discharge are shown. The technologies of strengthening and a passivating film formation on the surface are considered by the example of metal products. The technology of surface roughness improvement is considered by the example of metal and non-metal products. It is shown that for the achievement of maximum possible improvement of surface properties in products the development of special equipment is necessary.

Surface properties of polyethylene after low-temperature plasma treatment

2003 ◽  
Vol 281 (11) ◽  
pp. 1025-1033 ◽  
Author(s):  
Hana Drnovská ◽  
Lubomír Lapčík ◽  
Vilma Buršíková ◽  
Josef Zemek ◽  
Ana M. Barros-Timmons
Keyword(s):  
Low Temperature ◽  
Plasma Treatment ◽  
Surface Properties ◽  
Low Temperature Plasma ◽  
Temperature Plasma

scholarly journals MODIFICATION OF TRACK-ETCHED MEMBRANES BY LOW-TEMPERATURE PLASMA

2018 ◽  
Vol 61 (4-5) ◽  
pp. 4
Author(s):  
Lyubov’ I. Kravets ◽  
Alla B. Gilman
Keyword(s):  
Low Temperature ◽  
Photoelectron Spectroscopy ◽  
Morphological Changes ◽  
Membrane Surface ◽  
Published Data ◽  
Bullous Keratopathy ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Force Microscopy ◽  
Track Membranes

Published data appearing in the last decade on the modification of track-etched membranes with the use of low-temperature plasma are considered. Some schematic description of setups and methods for sample processing in discharges of various types in atmosphere of non-polymerizing gases and by plasma polymerization, also by using of such plasma-chemical methods as magnetron sputtering of polymer targets and electron-beam dispersion of polymers in vacuum are presented. Some modern physicochemical methods for studying of changes occurring on the surface of membranes are described. Some typical examples of changes in the contact properties of the track-etched membrane surface and their chemical composition by means of X-ray photoelectron spectroscopy and Fourier-IR spectroscopy are given. Using the methods of atomic force microscopy and electron microscopy, some examples of morphological changes occurring on the surface of track membranes and in the volume of pores are presented. It is shown that the modification of track membranes by low temperature plasma leads to the creation of “smart” membranes, which possess some unique properties. This allows to significantly expand the areas of their application. Modified membranes can be used as thermosensitive elements and mechanochemical membranes with a “chemical valve”.The plasma treatment allows also significantly change the biocompatibility of the surface of track-etched membranes and use them in medicine and biology. By means of some special techniques, studies of the adsorption and growth of cellular and biological structures on the surface of modified track-etched membranes are presented.The possibility of the modified track membranes using as a highly effective biocompatible drainage material in the surgical treatment of refractory glaucoma, as well as implants in the treatment of bullous keratopathy is shown.Forcitation:Kravets L.I.,Gilman A.B. Modification of track-etched membranes by low-temperature plasma. Izv. Vyssh. Uchebn. Zaved. Khim. Khim. Tekhnol. 2018. V. 61. N 4-5. P. 4-30

Low-temperature plasma processing for the enhancement of surface properties and dyeability of wool fabric

2015 ◽  
Vol 133 (12) ◽  
pp. n/a-n/a ◽  
Author(s):  
Pankaj Mendhe ◽  
Gauree Arolkar ◽  
Sanjeev Shukla ◽  
Rajendra Deshmukh
Keyword(s):  
Low Temperature ◽  
Surface Properties ◽  
Plasma Processing ◽  
Wool Fabric ◽  
Low Temperature Plasma ◽  
Temperature Plasma
Sign in / Sign up

Export Citation Format

Share Document