2012 Fiscal Year Final Research Report
Adsorption behavior of surfactant molecules on substrate in water
| Project/Area Number |
22500710
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| Research Category |
Grant-in-Aid for Scientific Research (C)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
General human life sciences
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| Research Institution | Niigata University |
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Principal Investigator |
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| Project Period (FY) |
2010 – 2012
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| Keywords | 衣環境 |
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| Research Abstract |
The surfactant molecules adsorb to substrates such as the fabrics, it is well known amodel that a hydrophilic group adsorbed to a substrate, and hydrophobic group facedto water. However, this model is thermodynamically unstable and is not rational. Inthis study, we investigated a rational adsorption model by using of surface tension, quartz crystal microbalance, and Infrared spectroscopic techniques etc. That is thesubstrate surface is hydrophilic, and there is very little number of the adsorption ofsurfactant molecules. On the other hand, the surfactant adsorbs as multi-layer onthe hydrophobic surface. In addition, we also proposed that the model of acollapsed-vesicle as an adsorption model of fabric softener surfactant.
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