Surface Potential of Methyl Isobutyl Carbinol Adsorption Layer at the Air/Water Interface
The surface potential (ΔV) and surface tension (γ) of MIBC (methyl isobutyl carbinol) were measured on the subphase of pure water and electrolyte solutions (NaCl at 0.02 and 2 M). In contrast to ionic surfactants, it was found that surface potential gradually increased with MIBC concentration. The Δ...
| Main Authors: | , , , , , |
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| Format: | Journal Article |
| Published: |
American Chemical Society
2012
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| Online Access: | http://hdl.handle.net/20.500.11937/31632 |
| _version_ | 1848753435626700800 |
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| author | Phan, Chi Nakahara, H. Shibata, O. Moroi, Y. Thu, Le Ang, Ha Ming |
| author_facet | Phan, Chi Nakahara, H. Shibata, O. Moroi, Y. Thu, Le Ang, Ha Ming |
| author_sort | Phan, Chi |
| building | Curtin Institutional Repository |
| collection | Online Access |
| description | The surface potential (ΔV) and surface tension (γ) of MIBC (methyl isobutyl carbinol) were measured on the subphase of pure water and electrolyte solutions (NaCl at 0.02 and 2 M). In contrast to ionic surfactants, it was found that surface potential gradually increased with MIBC concentration. The ΔV curves were strongly influenced by the presence of NaCl. The available model in literature, in which surface potential is linearly proportional to surface excess, failed to describe the experimental data. Consequently, a new model, employing a partial charge of alcohol adsorption layer, was proposed. The new model predicted the experimental data consistently for MIBC in different NaCl solutions. However, the model required additional information for ionic impurity to predict adsorption in the absence of electrolyte. Such inclusion of impurities is, however, unnecessary for industrial applications. The modeling results successfully quantify the influence of electrolytes on surface potential of MIBC, which is critical for froth stability. |
| first_indexed | 2025-11-14T08:24:28Z |
| format | Journal Article |
| id | curtin-20.500.11937-31632 |
| institution | Curtin University Malaysia |
| institution_category | Local University |
| last_indexed | 2025-11-14T08:24:28Z |
| publishDate | 2012 |
| publisher | American Chemical Society |
| recordtype | eprints |
| repository_type | Digital Repository |
| spelling | curtin-20.500.11937-316322017-09-13T15:20:56Z Surface Potential of Methyl Isobutyl Carbinol Adsorption Layer at the Air/Water Interface Phan, Chi Nakahara, H. Shibata, O. Moroi, Y. Thu, Le Ang, Ha Ming The surface potential (ΔV) and surface tension (γ) of MIBC (methyl isobutyl carbinol) were measured on the subphase of pure water and electrolyte solutions (NaCl at 0.02 and 2 M). In contrast to ionic surfactants, it was found that surface potential gradually increased with MIBC concentration. The ΔV curves were strongly influenced by the presence of NaCl. The available model in literature, in which surface potential is linearly proportional to surface excess, failed to describe the experimental data. Consequently, a new model, employing a partial charge of alcohol adsorption layer, was proposed. The new model predicted the experimental data consistently for MIBC in different NaCl solutions. However, the model required additional information for ionic impurity to predict adsorption in the absence of electrolyte. Such inclusion of impurities is, however, unnecessary for industrial applications. The modeling results successfully quantify the influence of electrolytes on surface potential of MIBC, which is critical for froth stability. 2012 Journal Article http://hdl.handle.net/20.500.11937/31632 10.1021/jp210053u American Chemical Society restricted |
| spellingShingle | Phan, Chi Nakahara, H. Shibata, O. Moroi, Y. Thu, Le Ang, Ha Ming Surface Potential of Methyl Isobutyl Carbinol Adsorption Layer at the Air/Water Interface |
| title | Surface Potential of Methyl Isobutyl Carbinol Adsorption Layer at the Air/Water Interface |
| title_full | Surface Potential of Methyl Isobutyl Carbinol Adsorption Layer at the Air/Water Interface |
| title_fullStr | Surface Potential of Methyl Isobutyl Carbinol Adsorption Layer at the Air/Water Interface |
| title_full_unstemmed | Surface Potential of Methyl Isobutyl Carbinol Adsorption Layer at the Air/Water Interface |
| title_short | Surface Potential of Methyl Isobutyl Carbinol Adsorption Layer at the Air/Water Interface |
| title_sort | surface potential of methyl isobutyl carbinol adsorption layer at the air/water interface |
| url | http://hdl.handle.net/20.500.11937/31632 |