期刊
POLYMER
卷 46, 期 1, 页码 203-208出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.polymer.2004.11.012
关键词
atomic force microscopy; adhesive force; polydimethylsiloxane
Polydimethylsiloxane (PDMS) materials show the unique phenomenon that when exposed to electrical discharge, such as corolla discharge, their hydrophobic surface becomes hydrophilic. However, after a certain relaxation time they gradually regain their hydrophobicity. In this study the adhesive force obtained by AFM force distance measurements using a hydrophilic Si3N4 probe is used to track the recovery of the hydrophobicity. The time constant of the recovery can be determined by measuring the adhesive force as a function of the recovery time after corona exposure. It is shown how these time constants can be used to monitor the recovery rate as a function of corona treatment time for both filled and unfilled PDMS compounds. (C) 2004 Elsevier Ltd. All rights reserved.
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