Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/65437
Type: Artigo de periódico
Title: Electric potential decay on polyethylene: Role of atmospheric water on electric charge build-up and dissipation
Author: Burgo, TAD
Rezende, CA
Bertazzo, S
Galembeck, A
Galembeck, F
Abstract: Electrostatic potential decay on corona-charged low-density polyethylene (LDPE) was recorded as a function of position and time, using a macroscopic scanning electrode and also Kelvin force microscopy. Potential decays independently in adjacent sample areas until reaching equilibrium at negative values (4.6 +/- 0.7 V), irrespective of the initial potential signal. Other observations already described in literature were confirmed: negative potential decays slower than positive potential and the relative humidity has a large effect on the dissipation rates. These results are discussed considering ion exchange associated to adsorption and desorption of water clusters at the solid-gas interface. (C) 2011 Elsevier B.V. All rights reserved.
Subject: Charge dissipation
Adsorption
Polyethylene
Kelvin probe
Kelvin force microscopy
Water
Country: Holanda
Editor: Elsevier Science Bv
Rights: fechado
Identifier DOI: 10.1016/j.elstat.2011.05.005
Date Issue: 2011
Appears in Collections:Unicamp - Artigos e Outros Documentos

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