Coplanar surface barrier

Low-density polyethylene (LDPE) foils are cleaned with dichloromethane to remove the impurities. The foils are then activated, imder dynamic conditions at atmospheric pressure and room temperature, with diffuse coplanar surface barrier discharge equipment. The treatment is carried out for 15 s under an air atmosphere using a 200 W power supply. Plasma is generated by two parallel banded system of electrodes (1 mm wide, 50 micron thick, with 0.5 mm spacing between the strips, made of silver-paste) embedded in 96% aluminium oxide of high purity, while the electrodes are supplied with a high frequency sinusoidal voltage (-15 kHz, Um 10 kV). 

DCSBD Diffuse coplanar surface barrier discharge... 

Diffuse Coplanar Surface Barrier Discharge (DCSBD)... 

Figure 20.13 (A) Narrow-web pilot-scale DCSBD plasma treater. (B) A customized DCSBD plasma treater consisting of numerous (up to 25) diffuse coplanar surface barrier discharge units. See also [64]. (Reproduced with permission from Masaryk University, Brno).

Toth A, Cemakova L, Cernak M, Kunovska K. Surface analysis of groundwood paper treated by diffuse coplanar surface barrier discharge (DCSBD) type atmospheric plasma in air and in nitrogen. Holzforschung 2007 61 528-31. 

Stefecka, M. Kando, M. Cernak, M Korzec, D. Finantu-Dinu, E. G. Dinu, G. L. Engemann, J. (2003). Spatial distribution of surface treatment efficiency in coplanar barrier discharge operated with oxygen-nitrogen gas mixtures. Surf. Coat. Technol, Vol. 174, pp. 553-558, ISSN 0257-8972. 

Ab initio calculations were performed on the proton affinity of H2NN in comparison to other double-bond systems [16], on the concerted hydrogen transfer from H2NN to c/s-and trans-H2 2 with respect to the energy barrier of the coplanar intermediate a-complex, and the dimerization reaction of H2NN [32, 35]. Ab initio [18, 35, 36] and semiempirical [24] calculations were performed on the potential surface of the cycloaddition reaction of H2NN with H2C=CH2. The calculations on one hand indicate the existence of a stable complex, but on the other hand a high reaction barrier. 

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