Low-temperature plasma modification of polymers — Methods and equipment

Polimery ◽  
2011 ◽  
Vol 56 (03) ◽  
pp. 185-195 ◽  
Author(s):  
Marian Zenkiewicz ◽  
Piotr Rytlewski ◽  
Rafal Malinowski
Keyword(s):  
Low Temperature ◽  
Plasma Modification ◽  
Low Temperature Plasma ◽  
Temperature Plasma

scholarly journals Low-temperature plasma modification of carbon nanofillers for improved performance of advanced rubber composites

2019 ◽  
Vol 77 (2) ◽  
pp. 1015-1048 ◽  
Author(s):  
Mariusz Siciński ◽  
Dariusz M. Bieliński ◽  
Hieronim Szymanowski ◽  
Tomasz Gozdek ◽  
Anna Piątkowska
Keyword(s):  
Low Temperature ◽  
Plasma Modification ◽  
Low Temperature Plasma ◽  
Rubber Composites ◽  
Temperature Plasma ◽  
Carbon Nanofillers ◽  
Improved Performance

scholarly journals Pulsed UV Laser and Low Temperature Plasma Modification on Polyester Microfibre

2000 ◽  
Vol 46 (2) ◽  
pp. 32-41 ◽  
Author(s):  
Wilson Wong ◽  
Kwong Chan ◽  
Kwok Wing Yeung ◽  
Kai Shui Lau
Keyword(s):  
Low Temperature ◽  
Plasma Modification ◽  
Low Temperature Plasma ◽  
Uv Laser ◽  
Temperature Plasma

scholarly journals Surface Characterization of Low Temperature Plasma-Induced Cashmere Fibre by Air Gas

2017 ◽  
Vol 25 (0) ◽  
pp. 37-41 ◽  
Author(s):  
Yong Wang ◽  
Weidong Yu ◽  
Weidong Yu
Keyword(s):  
Low Temperature ◽  
Surface Characterization ◽  
Plasma Modification ◽  
Tensile Behaviour ◽  
Chemical Compositions ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Polar Groups ◽  
Surface Morphologies

Low temperature plasma (LTP) processing technology was successfully applied to modify cashmere fibres and three kinds of assemblies were formed, i.e., weak-treated, optimised -treated and severe-treated ones. Treatment parameters were optimised in terms of the tensile behaviour, friction effect, wettability and touch feeling of cashmere without major modification of the properties inside the fibre. Detailed characterisation was performed to investigate the surface morphologies and chemical compositions of plasma-induced fibres. SEM demonstrates different minor etching effects of the treated cashmere fibres. XPS results indicate a significant increase in surface concentrations of O and N, and an obvious decrease in C after different LTP treatments as a whole. The C-H/C-C non-polar bonds were reduced and C-O/C-N, C = O polar groups were remarkably increased on the cashmere surface after plasma modification. In addition, a carboxyl group (O-C = O) formed. It is found that oxygen-containing bonds, namely, C-O/C-N, C = O and O-C = O, are responsible for the hydrophilic properties of cashmere.

Effect of Non-Equilibrium Low Temperature Plasma on Genuine Leather Adhesion Properties of Special Purpose Footwear Upper to Molding Compositions with Polyurethanes Base

2020 ◽  
Vol 869 ◽  
pp. 296-302
Author(s):  
Liliia Yu. Makhotkina ◽  
Natalia Tikhonova ◽  
Tatiana Zhukovskaya ◽  
Guzel I. Garipova ◽  
Yuliia A. Kovalenko ◽  
...  
Keyword(s):  
Low Temperature ◽  
Plasma Modification ◽  
Low Temperature Plasma ◽  
Adhesive Properties ◽  
Temperature Plasma ◽  
Adhesion Properties ◽  
Molding Method ◽  
Coating Removal ◽  
Technological Defects ◽  
Non Equilibrium

Roughing operation is used to improve the adhesive properties of footwear upper to footwear bottom polyurethane compositions in the manufacture of special purpose footwear with an upper made of genuine leather by the injection molding method of attachment. Roughing operation is an operation of coating removal and partial removal of the front layer from the protracted edge of footwear upper workpiece. This operation has a disadvantage, it often causes technological defects. A method for increasing the adhesive properties of genuine leather special purpose footwear upper workpiece with a front layer by means of non-equilibrium low temperature plasma modification and technological scheme that allows this operation to be integrated into the production process are considered in the article.

scholarly journals Preparation of a Biofunctionalized Surface on Titanium for Biomedical Applications: Surface Properties, Wettability Variations, and Biocompatibility Characteristics

2020 ◽  
Vol 10 (4) ◽  
pp. 1438
Author(s):  
Mao-Suan Huang ◽  
Chia-Yu Wu ◽  
Keng-Liang Ou ◽  
Bai-Hung Huang ◽  
Tien-Hsin Chang ◽  
...  
Keyword(s):  
Low Temperature ◽  
Plasma Polymerization ◽  
Scientific Information ◽  
Plasma Modification ◽  
Low Temperature Plasma ◽  
Amino Groups ◽  
Temperature Plasma ◽  
Adhesion Ability ◽  
Surface Contaminants ◽  
Ar Plasma

This study developed a promising approach (low-temperature plasma polymerization with allylamine) to modify the titanium (Ti) surface, which helps the damaged tissue to heal faster. The Ti surface was first cleaned by argon (Ar) plasma, and then the functional amino-groups were coated on the Ti surface via plasma polymerization. The topography characteristics, wettability, and optimal plasma modification parameters were investigated through atomic force spectroscopy, secondary ion mass spectroscopy, and response surface methodology (RSM). Analytical results showed that the formation of a porous surface was found on the Ar plasma-modified Ti surfaces after Ar plasma modification with different parameters. The Ar plasma modification is an effective approach to remove surface contaminants and generate a porous topography on the Ti surface. As the Ti with Ar plasma modification was at 100 W and 190 m Torr for 12 min, the surface exhibited the maximum hydrophilic performance. In the allylamine plasma modifications, the contact angle values of the allylamine plasma-modified Ti surfaces varied between 70.15° and 88.26° in the designed parameters. The maximum concentration of amino-groups (31.58 nmole/cm2) can be obtained from the plasma-polymerized sample at 80 W and 150 mTorr for 22 min. Moreover, the cell response also demonstrated that the allylamine plasma-modified Ti sample with an optimal modification parameter (80 W, 22 min, and 150 mTorr) possessed great potential to increase cell adhesion ability. Thus, the optimal parameters of the low-temperature plasma polymerization with allylamine can be harvested using the RSM design. These data could provide new scientific information in the surface modification of Ti implant.

scholarly journals Plasma Modification of Carbon Coating Produced by RF CVD on Oxidized NiTi Shape Memory Alloy under Glow-Discharge Conditions

Materials ◽  
2021 ◽  
Vol 14 (17) ◽  
pp. 4842
Author(s):  
Justyna Witkowska ◽  
Michał Tarnowski ◽  
Emilia Choińska ◽  
Marek Kulpa ◽  
Jacek Szade ◽  
...  
Keyword(s):  
Low Temperature ◽  
Glow Discharge ◽  
Amorphous Carbon ◽  
Carbon Coating ◽  
Chemical Vapour ◽  
Contact Angles ◽  
Plasma Modification ◽  
Low Temperature Plasma ◽  
Short Term ◽  
Temperature Plasma

Our previous work has shown that for cardiac applications, combining low-temperature plasma oxidation with an amorphous carbon coating (a-C:N:H type) constitutes a prospective solution. In this study, a short-term modification by low-temperature oxygen plasma is proposed as an example and a method for shaping the topography and surface energy of the outer amorphous carbon coating, produced via the Radio-Frequency Chemical Vapour Deposition (RFCVD) method on NiTi alloy oxidized under glow-discharge conditions. This treatment alters the chemical composition of the outer zone of the surface layer. A slight increase is also noted in the surface roughness at the nanoscale. The contact angles were shown to increase by about 20% for water and 30% for diiodomethane, while the surface free energy decreased by ca. 11%. The obtained results indicate that even short-term contact with low-temperature plasma can shape the surface properties of the carbon coating, an outcome which shows potential in terms of its use in medical applications.

scholarly journals Estimate of potentialities for product machinability improvement by high-speed steel tool with modified cutting part

2020 ◽  
Vol 0 (5) ◽  
pp. 19-22
Author(s):  
Vladimir Martynov ◽  
Anastasia Taranova ◽  
Alexsey Evteev
Keyword(s):  
Low Temperature ◽  
Tool Life ◽  
High Speed ◽  
High Speed Steel ◽  
Plasma Modification ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Period Increase ◽  
Steel Drill ◽  
Plasma Effect

There are presented results of the comparative operation of two high-speed steel drill types: common ones and those with the working part modified by low-temperature plasma effect. A possibility to improve product machinability according to the criterion of productivity at the expense of the durability period increase of modified drills is shown. There are formulated requirements to the results of low-temperature plasma modification ensuring tool life increase.

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