Journal of the Society of Cosmetic Scientists of Korea (대한화장품학회지)
- Volume 10 Issue 1
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- Pages.42-48
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- 1984
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- 1226-2587(pISSN)
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- 2288-9507(eISSN)
STUDIES ON THE I LABELLING OF CASTOR OIL, AND THE DETERGENCY OF SODIUM DODECYL SULFATE
- Heo, Yong-Cheol (Pacific Chem, Co., R&D Lab.,) ;
- Mun, Byeong-Yeol ( Chung-Ang Univ.) ;
- Kim, Yeong-Guk (Pacific Chem, Co., R&D Lab.,)
- Published : 1984.09.01
Abstract
The comparative detergency of Sodium dodecyl sulfate (SDS) solution near the first critical micelle concentration (CMC) was measured by means of a 131 I-labelled castor oil as a soil. More than 95% radiochemical purity of 131 I-labelled castor oil was obtained using potassium lidide as a carrier. Polyester test fabric was soiled with 131 I-labelled castor oil, and washed in a conventional washing apparatus mounted on appropriate devices. Fabric radioactivities were measured before and after washing by a scintilation counter. Near the first CMC, the detergency of SDS was increased with decreasing of surface tension of SDS. It was also shown that 131 I-labelled castor oil was useful for studying the detergency of SDS.
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