Dielectric barrier discharge surface

Dielectric barrier discharges (DBD) is the case in which a dielectric material is placed on the electrode surfaces. Similar to corona discharges, small-scale electron streamers are formed. In the DBD mode of operation, the threshold electric field... 

Upadhyay et al. [98] used primarily correlated XPS and water contact angle measurements to study the surface degradation and recovery of amorphous films of a PMMA and a poly (aryl ether ether ketone) (PEEK). Surface modification of the films was carried out in a dielectric barrier discharge (DBD) unit, samples being treated with different dose levels of dielectric discharge. The modified (treated) samples were then stored for one month and re-examined. Figure 35 shows C(ls) and 0(1 s) XPS envelopes and their curve-fitting deconvolutions,... 

Bente, M., Avramidis, G., Forster, S., Rohwer, E.G. and Viol, W. (2004). Wood surface modification in dielectric barrier discharges at atmospheric pressure for creating water repellent characteristics. Holz alsRoh- und Werkstoff, 62(3), 157-163. 

Rehn, P. and Viol, W. (2003). Dielectric barrier discharge treatments at atmospheric pressure for wood surface modification. Holz. als Roh- und Werkstoff, 61(2), 145-150. 

Aerodynamic Effects of Surface and Dielectric Barrier Discharges Aerodynamic Plasma Actuators... 

The surface modification of the ground rubber tire (GRT) powder was found to be suitable for enhancement of its adhesion to nitrile rubber (NBR) vulcanizates (Zhang et al., 2009c). By use of the atmospheric pressure dielectric barrier discharge, the hydrophobic surface of the powder transformed to a hydrophilic one as shown by the water contact angle, ATR-FTIR, and X-ray photoelectron spectroscopic (XPS) studies. After atmospheric plasma treatment, the improvement in the tensile strength and tear strength was observed for the modified tire powder-filled NBR vulcanizates. The latter was attributed to the enhanced interfacial interaction between modified GRT and NBR matrix. 

The use of aerosols in plasma technology increases the available spectrum of suitable chemicals considerably. To a certain extent, liquid chemicals, solutions and dispersions can be used in plasma for surface modiflcation with the help of aerosols under atmospheric pressure. Combinations of aerosols and spraying application in dielectrical barrier discharge for the surface treatment of textiles is in the first stage of development and offers potential for future development. Examples of current and future applications are ... 

Modification of Sugar Maple Acer saccharum) and Black Spruce (Picea mariana) Wood Surfaces in a Dielectric Barrier Discharge (DBD) at Atmospheric Pressure... 

Borcia G, Chiper A, Rusu 1. Using a He-FN2 dielectric barrier discharge for the modification of polymer surface properties. Plasma Sources Sci Technol 2006 15 849. 

Many different polymers have been studied over the years with UV/O3 treatment, including biodegradable polymers. A number of different strategies have been used for the production of ozone and its application in the modification of scaffold polyesters [88-95]. In addition to the traditional UV/O3 treatment, several research groups have begun using other techniques, such as dielectric barrier discharge in air for surface modification of polyester substrates [92,93]. 

Kikani, P., Desai, B., Chowdhuri, M.B. et al (2012) Use of dielectric barrier discharge in air for surface modification of polyester substrate to confer durable wettability and enhance dye uptake with natural dye eco-alizarin. Compos. Interfaces, 19 (3-4), 219-229. 

Surface Modification Using Dielectric Barrier Discharge (DBD)... 

Another process that promotes chemical adhesion is the pre-treatment of low energy surface materials. This can be considered as a dry priming process, as no wet chemicals are used. Corona discharge treatment, dielectric barrier discharge, flame and Plasma treatment are widely used techniques in Pre-treatments of polyolefins. This reactive surface allows chemical bonding with the applied adhesive. 

Borcia G, Anderson CA and Brown NMD, Dielectric barrier discharge for surface treatment application to selected polymers in film and fibre form . Plasma Sources Science and Technology, 12 (3), 2003, pp 335-344. 

Na, N., et al. (2007) Direct detection of explosives on solid surfaces by mass spectrometry with an ambient ion source based on dielectric barrier discharge. Journal of Mass Spectrometry, 42,1079-1085. 

Sarra-Bournet, C, Poulin, S., Piyakis, K., Turgeon, S., Laroche, G. (2010) ToF-SIMS multivariate characterization of surface modification of polymers by N2H2 atmospheric pressure dielectric barrier discharge. Surf. Interface Anal., 42,102-109. 

Detavemier, C., Dendooven, J., Sree, S.P., Ludwig, K.F., Martens, J.A., 2011. Tailoring nanoporous materials by atomic layer deposition. Chem. Soc. Rev. 40, 5242—5253. Dobbs, H.S., 1982. Fracture of titanium orthopaedic implants. J. Mater. Sci. 17, 2398—2404. Doherty, K.G., Oh, J.-S., Unsworth, P., Bowfield, A., Sheridan, C.M., Weightman, P., Bradley, J.W., Williams, R.L., 2013. Polystyrene surface modification for localized cell culture using a capillary dielectric barrier discharge atmospheric-pressure microplasma jet. Plasma Processes Polym. 10, 978—989. 

Jia G, Ghen P, Li B, Wang Q, Lu C and Yu Q (2010) Effects of Twaron fiber surface treatment by air dielectric barrier discharge plasma on the interfacial adhesion in fiber reinforced composites. Surf Coat Technol 204 3668-3675. 

Ambient MS is another advance in the field. It allows the analysis of samples with little or no sample preparation. Following the introduction of desorption electrospray ionization (DESI) [108,109], direct analysis in real time (DART) [110], and desorption atmospheric pressure chemical ionization (DAPCI) [111, 112], a number of ambient ionization methods have been introduced. They include electrospray-assisted laser desorption/ionization (ELDI) [113], matrix-assisted laser desorption electrospray ionization (MALDESI) [114], atmospheric solids analysis probe (ASAP) [115], jet desorption ionization (JeDI) [116], desorption sonic spray ionization (DeSSI) [117], field-induced droplet ionization (FIDI) [118], desorption atmospheric pressure photoionization (DAPPI) [119], plasma-assisted desorption ionization (PADI) [120], dielectric barrier discharge ionization (DBDI) [121], and the liquid microjunction surface sampling probe method (LMJ-SSP) [122], etc. All these techniques have shown that ambient MS can be used as a rapid tool to provide efficient desorption and ionization and hence to allow mass spectrometric characterization of target compounds. 

Cui, NY Upadhyay, DJ Anderson, CA Meenan, BJ Brown, NMD. Surface oxidation of a Melinex 800 PET polymer material modified by an atmospheric dielectric barrier discharge studied using X-ray photoelectron spectroscopy and contact angle measurement. Applied Surface Science, 2007,253, 3865-3871. 

M.N. Acda, E.E. Devera, R.J. Cabangon, K.G. Pabelma and H.J. Ramos, Effects of dielectric barrier discharge plasma modification on surface properties of tropical hardwoods at low pressure, /. Tropical Forest Sci., 24, 416-425 (2012). 

Mingli, F., Junmln, L., Wenbo, Z., Junliang, W., Limin, C., Bichim, H., and Daiqi, Y. (2014) Surface reactive species on MnO (0.4)-CeO2 catalysts towards soot oxidation assisted with pulse dielectric barrier discharge. /. Rare Earths, 32, 153-158. 

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