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(Reference retrieved automatically from Web of Science through information on FAPESP grant and its corresponding number as mentioned in the publication by the authors.)

Surface properties and corrosion resistance of SF6 plasma-treated polyester-based thermoplastic elastomer

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Resende, Renato Carvalho [1] ; Waldman, Walter Ruggeri [2] ; da Cruz, Nilson Cristino [1] ; Durrant, Steven F. [1] ; Rangel, Elidiane Cipriano [1]
Total Authors: 5
[1] Paulista State Univ UNESP, Inst Ciencia & Tecnol Sorocaba, Technol Plasmas Lab, Ave Tres de Marco 511, BR-18087180 Sorocaba, SP - Brazil
[2] Fed Univ Sao Carlos UFSCAR, Sorocaba Campus, Rod Joao Leme dos Santos, Km 110, BR-18052780 Sorocaba, SP - Brazil
Total Affiliations: 2
Document type: Journal article
Source: SURFACE AND INTERFACE ANALYSIS; v. 50, n. 1, p. 13-26, JAN 2018.
Web of Science Citations: 0

Copolyester thermoplastic elastomers (COPE) have interesting mechanical properties but low chemical resistance in aggressive environments. Developing a treatment that would increase their chemical resistance while preserving their convenient bulk characteristics would be an advance. Radiofrequency plasma treatments in sulfur hexafluoride were undertaken. Surface properties and corrosion resistance of untreated and treated samples were investigated. Surface chemical composition was altered, resulting in a loss of organic elements and the incorporation of fluorine. Surface morphology and topography were changed by the removal of species during the treatment. Treatment tends to increase hydrophobicity; for the longer treatment times, hydrophobicity tends to be retained even after aging under atmospheric conditions. Resistance to chlorine attack was substantially increased upon fluorination, while resistance to oxygen attack was improved in some cases. The improvement in the corrosion resistance, which suggests an increase in lifetime under practical conditions, depends on fluorine incorporation and its effect on the physical stability of the structure. (AU)

FAPESP's process: 14/21594-9 - Characterization of surfaces chlorinated in plasmas and chlorinated thin films deposited in plasmas
Grantee:Steven Frederick Durrant
Support type: Regular Research Grants