期刊
COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS
卷 536, 期 -, 页码 213-223出版社
ELSEVIER SCIENCE BV
DOI: 10.1016/j.colsurfa.2017.05.002
关键词
CaCO3 surface; Anionic fluorinated surfactant; Contact angle; Active ratio; Foam stabilizer
资金
- Ministry of Science, ICT & Future Planning [NRF-2015M2A8A5021907]
In this study, the effect of adsorption behavior of anionic fluorinated surfactant (Zonyl TBS) on the wetting property of CaCO3 substrate was investigated. In a low surfactant concentration region, the CaCO3 surface becomes more hydrophobic with an increase in surfactant concentration due to monolayer adsorption of surfactant molecules on the solid surface. However, further increase in surfactant concentration after the formation of a monolayer saturated with surfactant molecules produced a reverse change from hydrophobic to hydrophilic due to bilayer formation of surfactant molecules on the CaCO3 surface. Foam stability test for aqueous solutions containing 1 wt% of CaCO3 nanoparticles indicated that ultrastable foam was observed at 1.70 x 10(-1) wt% of Zonyl TBS concentration where the contact angle measured through the aqueous phase was found to be 93.6 +/- 0.3 degrees. This result indicated that CaCO3 nanoparticle treated by low concentration of fluorosurfactant Zonyl TBS is a strong candidate for the potential applicability as a foam stabilizer.
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