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 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

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 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

Effect of radical on defect and molecular structure of monolayer MoS2 by low temperature plasma treatment

2022 ◽  
Author(s):  
Shuya ASADA ◽  
Akihisa OGINO
Keyword(s):  
Molecular Structure ◽  
Low Temperature ◽  
Plasma Treatment ◽  
Photoelectron Spectroscopy ◽  
Microwave Plasma ◽  
Hydrogen Ions ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
X Ray ◽  
Ar Plasma

Abstract The aim of this study is to form the sulfur defects on monolayer molybdenum disulfide (MoS2) by low temperature microwave plasma treatment suppressing disturbance of molecular structure. CVD-grown and plasma treated multilayer MoS2 surface were analyzed to investigate the effects of H2 and Ar plasma treatment on sulfur defects and molecular structure. It was found that the disturbance of molecular structure was suppressed in the H2 plasma treatment compared to the Ar plasma treatment. Varying the incident ratio of hydrogen ions H+ and radicals H*, the influences of H2 plasma treatment with high and low H*/H+ ratio on monolayer MoS2 structure were discussed. As a result of X-ray photoelectron spectroscopy, Raman spectroscopy and photoluminescence analysis, sulfur defects increased with the increase in total amount of radical incident on MoS2. In addition, it is speculated that the etching with radical contributed to form sulfur defects suppressing the disturbance of molecular structure.

Thin polymer films produced from vinylferrocene by low-temperature plasma polymerization

Polimery ◽  
1987 ◽  
Vol 32 (02) ◽  
pp. 53-54
Author(s):  
ALEKSANDER M. WROBEL ◽  
GRZEGORZ CZEREMUSZKIN ◽  
MARIAN KRYSZEWSKI
Keyword(s):  
Low Temperature ◽  
Polymer Films ◽  
Plasma Polymerization ◽  
Low Temperature Plasma ◽  
Thin Polymer Films ◽  
Temperature Plasma ◽  
Thin Polymer

Development of Blood Compatible Alpha-lipoic acid Coated Stent with a Good Adhesive by Low Temperature Plasma Polymerization

2008 ◽  
Vol 1132 ◽  
Author(s):  
Sun-Jung Song ◽  
Kyoung Seok Kim ◽  
Dong Lyun Cho ◽  
Myung Ho Jeong
Keyword(s):  
Low Temperature ◽  
Lipoic Acid ◽  
Plasma Polymerization ◽  
Mechanical Stability ◽  
Blood Compatibility ◽  
Neointimal Hyperplasia ◽  
Amide Bond ◽  
Metallic Stent ◽  
Low Temperature Plasma ◽  
Temperature Plasma

ABSTRACTNeointimal hyperplasia is a main cause for in-stent restenosis after stent-implantation and is triggered by inflammatory response to foreign materials. It can be inhibited if the stent is modified to have good blood compatibility by coating drug compounds. Low temperature plasma polymerization of 1, 2-diaminocyclohexane was performed to prepare more adhesive polymeric thin film onto the metallic stent. Then, the chemical grafting of α-lipoic acid (ALA) was carried out to improve blood compatibility of stent. Drugs containing carboxylic groups can be chemically grafted through the formation of amide bond in the presence of 1-ethyl-3-(3-dimethylaminopropyl) carbodiimide methiodide onto the DACH deposited stent surface. ALA grafted film showed good mechanical stability and blood compatibility.

Preparation of CIM Feedstock of Al2O3-SiC Nanocomposite

2007 ◽  
Vol 280-283 ◽  
pp. 1089-1092
Author(s):  
Yan Luting ◽  
Si Wenjie ◽  
Xiong Tao ◽  
Miao Hezhuo
Keyword(s):  
Surface Modification ◽  
Low Temperature ◽  
Emulsion Polymerization ◽  
Plasma Polymerization ◽  
Solid Loading ◽  
Organic Media ◽  
Low Temperature Plasma ◽  
Temperature Plasma ◽  
Ceramic Injection Molding ◽  
Surface Modified

The ceramic injection molding feedstock of Al2O3-SiC nanocomposite were prepared and studied in detail. Three ways of surface modification including surfactant pre-coating, surface emulsion polymerization and surface low temperature plasma polymerization were used to modify the surface of SiC powders in order to reduce the agglomeration, improve the dispersion and the compatibility with organic media. CIM feedstock with different SiC content and solid loading were prepared through mixing surface modified SiC powders with Al2O3 powders and organic binders. The effect of three ways of surface modification on the viscosity of CIM feedstock were studied and the way of surface emulsion polymerization developed the best action in increasing dispersion, reducing viscosity and improving the solid loading of CIM feedstock.

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.

Surface Modification of Ultrafine Ceramic Powders by Low Temperature Plasma Polymerization

2004 ◽  
Vol 264-268 ◽  
pp. 109-112 ◽  
Author(s):  
Yan Luting ◽  
Si Wenjie ◽  
Miao Hezhuo ◽  
H. Wei ◽  
G. Zhigang ◽  
...  
Keyword(s):  
Surface Modification ◽  
Low Temperature ◽  
Plasma Polymerization ◽  
Low Temperature Plasma ◽  
Ceramic Powders ◽  
Temperature Plasma
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