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Effectiveness of commercial antistatic wall coatings.
Stein RL; Ryback WH
J Colloid and Interface Sci 1972 Mar; 38(3):654-655
Containers of plexiglas, lucite, polystyrene, and similar polymers have frequently been used as chambers for aerosol studies. These materials, because of their high surface resistivity and polarizability, have large areas of positive and negative surface charge which exist in random distribution over the plastic surface. These charge islands create electric fields within the chamber which interact with charged particles in the aerosol, resulting in high rate of particle loss to the wall. A detailed study of this phenomenon was recently undertaken by the dust control group of the Pittsburgh Mining and Safety Research Center as part of the Bureau of Mines' ongoing program of research to control respirable dust in underground coal mines. A report of this work is in preparation. To examine the effect of this surface electrostatic charge on the wall loss rate, control experiments were conducted using a film of a hydroscopic conducting detergent on the wall. Various commercial antistatic detergents were available for this purpose since they are used industrially to retard dust accumulation. A study of several of these agents was conducted to determine their effectiveness in reducing electrostatic wall loss of aerosol to a polystyrene surface.
Surface properties; Electrostatic fields; Electrical charge; Exposure chambers; Aerosol particles; Aerosols; Plastics; Polymers; Electrical fields; Respirable dust; Dust control; Mining; Detergents; Static electricity; Styrene; Effectiveness research; Underground mines; Coal mines; Coatings
OP; Journal Article
Issue of Publication
Journal of Colloid and Interface Science
Page last reviewed: May 5, 2020
Content source: National Institute for Occupational Safety and Health Education and Information Division