Optical and electrical diagnostics measurements of plasmas generated in aromatic compounds


Autoria(s): Santos, DCR; Santos, F. P.; Mota, Rogério Pinto; Honda, R. Y.; Algatti, M. A.
Contribuinte(s)

Universidade Estadual Paulista (UNESP)

Data(s)

20/05/2014

20/05/2014

01/10/1997

Resumo

Plasmas generated in de discharges in aromatic compounds have been used for several years in polymerization processes. The chemical kinetics developed in such a plasma environment are extremely complicated. Therefore it is extremely important to set up optical and electrical diagnostics in order to establish the kinetics of the film growth, In this work we studied de plasmas generated ill low-pressure atmospheres of benzene for different values of gas pressure and power coupled to the discharge. The pressure range varied from 0.2 to 1.0 mbar for electric power running from 4 to 25 W, the main chemical species observed within the discharge were CH, H and C. It was observed that the CH relative concentration increases continuously with the power in the range investigated. The electron temperature varied from 0.5 to 2.0 eV with the increase of the power, for a fixed value of gas pressure. The relative dielectric constant of the plasma polymerized benzene was kept around 4.8 from 100 Hz to 10 kHz, presenting a resonance near 25 kHz. This electric behaviour of the film was the same fur different conditions of polymeric film deposition, (C) 1997 Elsevier B.V. S.A.

Formato

686-690

Identificador

http://dx.doi.org/10.1016/S0257-8972(97)00510-0

Surface & Coatings Technology. Lausanne: Elsevier B.V. Sa, v. 94-5, n. 1-3, p. 686-690, 1997.

0257-8972

http://hdl.handle.net/11449/9144

10.1016/S0257-8972(97)00510-0

WOS:000070981000119

Idioma(s)

eng

Publicador

Elsevier B.V.

Relação

Surface & Coatings Technology

Direitos

closedAccess

Palavras-Chave #benzene plasma #actinometry #electronic temperature #polymerization process
Tipo

info:eu-repo/semantics/article