Please use this identifier to cite or link to this item: http://repositorio.unicamp.br/jspui/handle/REPOSIP/34598
Type: Artigo de periódico
Title: Evaluation of carbon fiber surface treated by chemical and cold plasma processes
Author: Nohara, Liliana Burakowski
Petraconi Filho, Gilberto
Nohara, Evandro Luís
Kleinke, Maurício Urban
Rezende, Mirabel Cerqueira
Abstract: Sized PAN-based carbon fibers were treated with hydrochloric and nitric acids, as well as argon and oxygen cold plasmas, and the changes on their surfaces evaluated. The physicochemical properties and morphological changes were investigated by atomic force microscopy (AFM), scanning electron microscopy (SEM), X-ray photoelectron spectroscopy (XPS), tensile strength tests and Raman spectroscopy. The nitric acid treatment was found to cause the most significant chemical changes on the carbon fiber surface, introducing the largest number of chemical groups and augmenting the roughness. The oxygen plasma treatments caused ablation of the carbon fiber surface, removing carbon atoms such as CO and CO2 molecules. In addition, the argon plasma treatment eliminated defects on the fiber surface, reducing the size of critical flaws and thus increasing the fiber's tensile strength.
Subject: carbon fibers
chemical treatment
cold plasma
functional groups
Editor: ABM, ABC, ABPol
Rights: aberto
Identifier DOI: 10.1590/S1516-14392005000300010
Address: http://dx.doi.org/10.1590/S1516-14392005000300010
http://www.scielo.br/scielo.php?script=sci_arttext&pid=S1516-14392005000300010
Date Issue: 1-Sep-2005
Appears in Collections:Unicamp - Artigos e Outros Documentos

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