Surface modification of fluorosilicone acrylate RGP contact lens via low-temperature argon plasma

2008 ◽  
Vol 255 (2) ◽  
pp. 483-485 ◽  
Author(s):  
Shiheng Yin ◽  
Yingjun Wang ◽  
Li Ren ◽  
Lianna Zhao ◽  
Tongchun Kuang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Low Temperature ◽  
Contact Lens ◽  
Argon Plasma

scholarly journals Surface modification of PMMA polymer and its composites with PC61BM fullerene derivative using an atmospheric pressure microwave argon plasma sheet

2021 ◽  
Vol 11 (1) ◽  
Author(s):  
Andrzej Sikora ◽  
Dariusz Czylkowski ◽  
Bartosz Hrycak ◽  
Magdalena Moczała-Dusanowska ◽  
Marcin Łapiński ◽  
...  
Keyword(s):  
Contact Angle ◽  
Surface Modification ◽  
Chemical Composition ◽  
Water Contact Angle ◽  
Plasma Sheet ◽  
Atmospheric Pressure ◽  
Argon Plasma ◽  
Fullerene Derivative ◽  
Water Contact ◽  
Pmma Polymer

AbstractThis paper presents the results of experimental investigations of the plasma surface modification of a poly(methyl methacrylate) (PMMA) polymer and PMMA composites with a [6,6]-phenyl-C61-butyric acid methyl ester fullerene derivative (PC61BM). An atmospheric pressure microwave (2.45 GHz) argon plasma sheet was used. The experimental parameters were: an argon (Ar) flow rate (up to 20 NL/min), microwave power (up to 530 W), number of plasma scans (up to 3) and, the kind of treated material. In order to assess the plasma effect, the possible changes in the wettability, roughness, chemical composition, and mechanical properties of the plasma-treated samples’ surfaces were evaluated by water contact angle goniometry (WCA), atomic force microscopy (AFM), attenuated total reflectance Fourier transform infrared spectroscopy (ATR-FTIR) and X-ray photoelectron spectroscopy (XPS). The best result concerning the water contact angle reduction was from 83° to 29.7° for the PMMA material. The ageing studies of the PMMA plasma-modified surface showed long term (100 h) improved wettability. As a result of plasma treating, changes in the samples surface roughness parameters were observed, however their dependence on the number of plasma scans is irregular. The ATR-FTIR spectra of the PMMA plasma-treated surfaces showed only slight changes in comparison with the spectra of an untreated sample. The more significant differences were demonstrated by XPS measurements indicating the surface chemical composition changes after plasma treatment and revealing the oxygen to carbon ratio increase from 0.1 to 0.4.

Surface Modification of Cobalt‐Manganese Mixed Oxide and Its Application for Low‐Temperature Propane Catalytic Combustion

2021 ◽  
Vol 6 (4) ◽  
pp. 522-531
Author(s):  
Yihao Liu ◽  
Peng Zhao ◽  
Liang Sun ◽  
Nengjie Feng ◽  
Lei Wang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Low Temperature ◽  
Mixed Oxide ◽  
Catalytic Combustion

Inactivation of Escherichia coli by microwave induced low temperature argon plasma treatments

2002 ◽  
Vol 53 (4) ◽  
pp. 341-346 ◽  
Author(s):  
Dambadarjaa Purevdorj ◽  
Noriyuki Igura ◽  
Isao Hayakawa ◽  
Osamu Ariyada
Keyword(s):  
Escherichia Coli ◽  
Low Temperature ◽  
Argon Plasma ◽  
Plasma Treatments

Surface modification of austenitic steel by low-temperature plasma

Vacuum ◽  
2005 ◽  
Vol 78 (2-4) ◽  
pp. 389-394 ◽  
Author(s):  
J. Baranowska ◽  
E. Kusior ◽  
V. Amigo ◽  
K. Szczeciński
Keyword(s):  
Surface Modification ◽  
Low Temperature ◽  
Austenitic Steel ◽  
Low Temperature Plasma ◽  
Temperature Plasma

Surface Properties of UHMWPE Fiber after Low Temperature Argon-Plasma Treatment

2012 ◽  
Vol 499 ◽  
pp. 90-94 ◽  
Author(s):  
Jin Yun Xu ◽  
Wen Yu Wang ◽  
Xin Jin
Keyword(s):  
Molecular Weight ◽  
Low Temperature ◽  
Plasma Treatment ◽  
Treatment Time ◽  
Argon Plasma ◽  
Uhmwpe Fiber ◽  
Wetting Ability ◽  
Plasma Treatment Time ◽  
Uhmwpe Fibers ◽  
Ultra High Molecular Weight

To improve the adhesion between ultra-high-molecular-weight polyethylene (UHMWPE) fibers and matrix, the UHMWPE fibers were treated by low temperature argon-plasma. The effects of argon-plasma treatment on the properties of UHMWPE have been investigated. The roughness and wetting ability were all found to increase significantly after modifications. The tensile strength of UHMWE fibers were decreased with the plasma treatment time. The optimum plasma treatment is 2min.The increasing of roughness and wetting ability of UHMWPE fiber are beneficial to the improvement the adhesion between UHMWPE fiber and matrix.

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