Hydrophobicity of contaminated silicone rubber surfaces
Zheng, ZM; Xu, CH; Jiang, J; Ren, CY; Gao, W; Xie, ZM
AbstractSilicone rubber (SIR) shows superior performance when used outdoors, but its surface can be transformed from inherently hydrophobic to hydrophilic by the adsorption of contaminants. Al(OH)(3), Al2O3, quartz powder and active carbon were selected as authentic contaminants. Hydrophobicity of the surface was determined using contact angle measurement. The results indicate that the adsorbability of the contaminants can strongly affect the hydrophobicity of contaminated SIR surface. The increasing rate of contact angle of specimens contaminated by Al(OH)(3) was much faster than that by Al2O3 and quartz due to the adsorption of migrated low molecular weight (LMW) polydimethylsiloxanes. Specimens contaminated by active carbon could achieve surface hydrophobicity within 15 min because active carbon has high adsorbability. Surfaces of contaminated ultrapure SIR, polytetrafluoroethylene (PTFE) and glass remain hydrophilic because they contain no mobile LMW components. The addition of oligomeric polydimethylsiloxanes has little effect on the hydrophobicity of contaminants covered on SIR surface.
KeywordHydrophobicity Silicone Rubber Contact Angle Contamination
Indexed BySCI
WOS IDWOS:000179457900009
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Cited Times:2[WOS]   [WOS Record]     [Related Records in WOS]
Document Type期刊论文
Corresponding AuthorXie, ZM
AffiliationChinese Acad Sci, Inst Chem, Ctr Mol Sci, Beijing 100080, Peoples R China
Recommended Citation
GB/T 7714
Zheng, ZM,Xu, CH,Jiang, J,et al. Hydrophobicity of contaminated silicone rubber surfaces[J]. CHINESE JOURNAL OF POLYMER SCIENCE,2002,20(6):559-564.
APA Zheng, ZM,Xu, CH,Jiang, J,Ren, CY,Gao, W,&Xie, ZM.(2002).Hydrophobicity of contaminated silicone rubber surfaces.CHINESE JOURNAL OF POLYMER SCIENCE,20(6),559-564.
MLA Zheng, ZM,et al."Hydrophobicity of contaminated silicone rubber surfaces".CHINESE JOURNAL OF POLYMER SCIENCE 20.6(2002):559-564.
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