Plasma-treating

Dekker A, Reitsma K, Beugeling T, Bant]es A, Fei]en J and van Aken W G 1991 Adhesion of endothelial-oells and adsorption of serum-proteins on gas plasma-treated polytetrafluoroethylene S/omaferfa/s 12 130-8... 

Fig. 7. Schematic of a self-contained plasma processing unit designed to continuously plasma-treat and impregnate with resin, reinforcing fibers for enhanced composite strength. The unit can also be used to plasma-treat wires to be coated or treated for improved adhesion. Throughput speeds of over...

Static SIMS analysis of plasma treated polymer surfaces. 

Using Reaction (4), a thin film of TiN was formed which was then plasma-treated in nitrogen. The coating has low resistivity even after exposure to air after 24 days. This film was successfully applied to sub-half-micron devices. 

Williams RL, Wilson DJ, and Rhodes, NP. Stability of plasma-treated silicone rubber and its influence on the interfacial aspects of blood compatibility. Biomaterials, 2004, 25, 4659 673. 

In order to support and meet this demand, an all-around development has taken place on the material front too, be it an elastomer new-generation nanofiller, surface-modified or plasma-treated filler reinforcing materials like aramid, polyethylene naphthenate (PEN), and carbonfiber nitrosoamine-free vulcanization and vulcanizing agents antioxidants and antiozonents series of post-vulcanization stabUizers environment-friendly process oil, etc. 

In reinforcing materials double-dipped polyesters for improved tire durability, plasma-treated yams for improved bonding in tire, and increased usage of aramid fabric as belt and application of PEN are the areas where manufacturers are showing interest. Introduction of new styles of steel wire geometry for improved mbber to metal adhesion and new steel wire coating formulations for improved mbber to metal bonding are other focused areas of development. 

Fig. 1. UV-Vis absorption spectra of H2+N2 plasma and O2 plasma treated Ti02 films Table 1. The optimum treatment conditions of various plasmas ...

Fig. 2. Concentration changes of MB under UV-A (left) and fluorescent light (right) by untreated and H2+Ar plasma treated Xi02 films (blank refers to the reference line for the calibration of concentration changes due to the evaporation of water by lights during the measurements)...

Fig. 4. Ti2p ESCA spectra of untreated (left) and H2+N2 plasma treated TiOa films...

O2 plasma treatment was also effective for the improvement of photocatalytic activity. Although the improvement was not as high as H2+Ar or N2+Ar plasma treatments, O2 plasma treated films show photocatalytic activities up to 1.3 times higher under UV-A and up to 1.7 times higher under fluorescent light than an untreated film. According to ESCA analysis, the improvements seem to attribute to the cleaning effect of O2 plasma. 

Nakamura, I., Negishi, N., Kutsuna, S. et al. (2000) Role of oxygen vacancy in the plasma-treated Ti02 photocatalyst with visible light activity for NO removal, J. Mol. Catal. A Chem. 161, 205-12. 

Tamada Y, Ikada Y (1993) Cell adhesion to plasma-treated polymer surfaces. Polymer 34 2208-2212... 

Fritz JL, Owen MJ (1995) Hydrophobic recovery of plasma-treated poly-dimethylsiloxane. J Adhesives 54 33... 

Fig. 16.10 Reaction scheme for immobilization of DNA onto functionalized Si02 substrates. Plasma treated Si02 substrates are denoted as Si OH, APTMS functionalized substrates are denoted as Si NH2, dendrimer functionalized substrates are denoted as Si G(4.5)COOH, and substrates to which DNA capture probes have been immobilized are denoted as Si DNA. Inset Repeat unit of PAMAM dendrimer possessing terminal carboxylic acid functionality...

FIGURE 6.10 Comparison of SIMS depth profiles of relative oxygen concentration on the nontreated and oxygen plasma-treated ITO surfaces. 

J.S. Kim, R.H. Friend, and F. Cacialli, Improved operational stability of polyfluorene-based organic light-emitting diodes with plasma-treated indium-tin-oxide anodes, Appl. Phys. Lett., 74 3084-3086, 1999. 

Carbon fibers, 4 735 24 624 26 729-749 applications of, 26 745 cellulose-based, 26 735-736 crystallite dimensions in, 26 737-739 gas-phase grown, 26 736-737 PAN-based, 26 730-733 pitch-based, 26 733-735 plasma-treated, 26 744 processing of, 26 730-737 properties of, 26 739-743 prospects for, 26 746-747 quality control and specifications for, 26 745-746... 

Collect headspace vapor of HBr from plasma treated with dimethyl sulfate at 85°C Extract in 18% trichloroacetic acid derivatize to 1,2-dibromo-cylcohexanone Digest in KOH. Convert to bromate, then to tetrabromorosaniline... 

Okano, T, Yamada, N., Sakai, H., and Sakurai, Y. A novel recovery system for cultured cells using plasma-treated polystyrene dishes graphted with poly(A-isopropylacrylamide), J. Biomed. Mater. Res., 1993, 27, 1243-1251. 

The chemical structure of plasma-treated PE was examined using XPS, the oxygen concentration profile was determined from RBS measurement and the concentration of free radicals was determined by EPR technique [78], The -CH a -CH2 (of pristine PE), oxidized (-C=0, -COO, -COC-), -NH2, and also -C=C-groups (typical for aromates) were reported present at Ar plasma-treated high-density PE (HOPE) [70],... 

Depth profile and total content of oxygen in PE was determined by RBS method. The profiles of plasma-treated sample and that subsequently etched in water are compared in Figure 9. The mean oxygen contents in the surface layer accesible by RBS, ca 140 nm thick, are (39 5) and (28 3).10 cm" for plasma-treated and water etched samples respectively. Both concentration profiles exhibit a maximum at the depth of ca 20 nm, further the concentration decreases slowly, falling to negligible concentrations at 60 nm. Similar trend was observed in previous report dealing with PE exposed to Ar plasma at the power of 1.7 W [70]. 

Figure 9. Concentration depth profiles of oxygen obtained from RBS measurement of plasma-treated PE and that of plasma-treated and water etched for 24 hours [78].

Table 3.C (Is) a O (Is) concentrations (at. %) determined from XPS measurements and radical densities (R, 10 g ) determined by EPR method. The concentrations and densities were determined on the pristine PE, plasma-treated PE (1 or 24 hours after the treatment) and plasma-treated and water etched PE (see left hand side of the table). Before the measurement the samples were stored under standard laboratory conditions [78]...

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