Effect of molecular structure of oil on wetting transition on surfactant solutions
Saved in:
| Title: | Effect of molecular structure of oil on wetting transition on surfactant solutions |
|---|---|
| Authors: | Matsubara, H.1 h.matsubarascc@mbox.nc.kyushu-u.ac.jp, Shigeta, T.1, Takata, Y.1, Ikeda, N.2, Sakamoto, H.3, Takiue, T.1, Aratono, M.1 |
| Source: | Colloids & Surfaces A: Physicochemical & Engineering Aspects. Jul2007, Vol. 301 Issue 1-3, p141-146. 6p. |
| Subjects: | Molecular structure, Cyclohexane, Fats & oils, Surface active agents |
| Abstract: | Abstract: Wetting behavior of butylcyclohexane on aqueous solutions of dodecyltrimethylammoniumbromide (DTAB) was studied by interfacial tensiometry, ellipsometry, and dihedral angle measurement. The air–water surface tension is the same with and without butylcyclohexane at low surfactant concentrations (partial wetting) but lowered by the presence of hexadecane with increasing surfactant concentration (pseudo-partial wetting). From ellipsometric measurements, it is confirmed that the transition between partial wetting and pseudo-partial wetting is the first-order and the thickness of the film in the pseudo-partial wetting regime is monomolecular level. The contact angle decreases rapidly with increasing surfactant concentration in the partial wetting regime then gradually increases in the pseudo-partial wetting regime, then approaches to a saturation value around the critical micelle concentration (cmc). These behaviors are qualitatively the same as those observed in our previous studies on the hexadecane system but quantitatively it is found that the wetting transition is promoted by the introduction of the cyclohexane ring to the molecular structure of oil compared to linear chain alkanes. The effect of molecular structure of oil on the formation of a microscopic oil film is rationalized by dispersion interactions between molecules in the film and in the bulk oil phase. [Copyright &y& Elsevier] |
| Copyright of Colloids & Surfaces A: Physicochemical & Engineering Aspects is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.) | |
| Database: | Engineering Source |
| FullText | Text: Availability: 0 |
|---|---|
| Header | DbId: egs DbLabel: Engineering Source An: 24863555 AccessLevel: 6 PubType: Academic Journal PubTypeId: academicJournal PreciseRelevancyScore: 0 |
| IllustrationInfo | |
| Items | – Name: Title Label: Title Group: Ti Data: Effect of molecular structure of oil on wetting transition on surfactant solutions – Name: Author Label: Authors Group: Au Data: <searchLink fieldCode="AR" term="%22Matsubara%2C+H%2E%22">Matsubara, H.</searchLink><relatesTo>1</relatesTo><i> h.matsubarascc@mbox.nc.kyushu-u.ac.jp</i><br /><searchLink fieldCode="AR" term="%22Shigeta%2C+T%2E%22">Shigeta, T.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Takata%2C+Y%2E%22">Takata, Y.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Ikeda%2C+N%2E%22">Ikeda, N.</searchLink><relatesTo>2</relatesTo><br /><searchLink fieldCode="AR" term="%22Sakamoto%2C+H%2E%22">Sakamoto, H.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Takiue%2C+T%2E%22">Takiue, T.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Aratono%2C+M%2E%22">Aratono, M.</searchLink><relatesTo>1</relatesTo> – Name: TitleSource Label: Source Group: Src Data: <searchLink fieldCode="JN" term="%22Colloids+%26+Surfaces+A%3A+Physicochemical+%26+Engineering+Aspects%22">Colloids & Surfaces A: Physicochemical & Engineering Aspects</searchLink>. Jul2007, Vol. 301 Issue 1-3, p141-146. 6p. – Name: Subject Label: Subjects Group: Su Data: <searchLink fieldCode="DE" term="%22Molecular+structure%22">Molecular structure</searchLink><br /><searchLink fieldCode="DE" term="%22Cyclohexane%22">Cyclohexane</searchLink><br /><searchLink fieldCode="DE" term="%22Fats+%26+oils%22">Fats & oils</searchLink><br /><searchLink fieldCode="DE" term="%22Surface+active+agents%22">Surface active agents</searchLink> – Name: Abstract Label: Abstract Group: Ab Data: Abstract: Wetting behavior of butylcyclohexane on aqueous solutions of dodecyltrimethylammoniumbromide (DTAB) was studied by interfacial tensiometry, ellipsometry, and dihedral angle measurement. The air–water surface tension is the same with and without butylcyclohexane at low surfactant concentrations (partial wetting) but lowered by the presence of hexadecane with increasing surfactant concentration (pseudo-partial wetting). From ellipsometric measurements, it is confirmed that the transition between partial wetting and pseudo-partial wetting is the first-order and the thickness of the film in the pseudo-partial wetting regime is monomolecular level. The contact angle decreases rapidly with increasing surfactant concentration in the partial wetting regime then gradually increases in the pseudo-partial wetting regime, then approaches to a saturation value around the critical micelle concentration (cmc). These behaviors are qualitatively the same as those observed in our previous studies on the hexadecane system but quantitatively it is found that the wetting transition is promoted by the introduction of the cyclohexane ring to the molecular structure of oil compared to linear chain alkanes. The effect of molecular structure of oil on the formation of a microscopic oil film is rationalized by dispersion interactions between molecules in the film and in the bulk oil phase. [Copyright &y& Elsevier] – Name: AbstractSuppliedCopyright Label: Group: Ab Data: <i>Copyright of Colloids & Surfaces A: Physicochemical & Engineering Aspects is the property of Elsevier B.V. and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.) |
| PLink | https://search.ebscohost.com/login.aspx?direct=true&site=eds-live&db=egs&AN=24863555 |
| RecordInfo | BibRecord: BibEntity: Identifiers: – Type: doi Value: 10.1016/j.colsurfa.2006.12.040 Languages: – Code: eng Text: English PhysicalDescription: Pagination: PageCount: 6 StartPage: 141 Subjects: – SubjectFull: Molecular structure Type: general – SubjectFull: Cyclohexane Type: general – SubjectFull: Fats & oils Type: general – SubjectFull: Surface active agents Type: general Titles: – TitleFull: Effect of molecular structure of oil on wetting transition on surfactant solutions Type: main BibRelationships: HasContributorRelationships: – PersonEntity: Name: NameFull: Matsubara, H. – PersonEntity: Name: NameFull: Shigeta, T. – PersonEntity: Name: NameFull: Takata, Y. – PersonEntity: Name: NameFull: Ikeda, N. – PersonEntity: Name: NameFull: Sakamoto, H. – PersonEntity: Name: NameFull: Takiue, T. – PersonEntity: Name: NameFull: Aratono, M. IsPartOfRelationships: – BibEntity: Dates: – D: 05 M: 07 Text: Jul2007 Type: published Y: 2007 Identifiers: – Type: issn-print Value: 09277757 Numbering: – Type: volume Value: 301 – Type: issue Value: 1-3 Titles: – TitleFull: Colloids & Surfaces A: Physicochemical & Engineering Aspects Type: main |
| ResultId | 1 |
