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KMID : 1024519920010010069
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Journal of the Environmental Sciences
1992 Volume.1 No. 1 p.69 ~ p.76
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The Study for the Sequestration of Ca[2+] by the Micelle Colloid of Nonionic Sunactants
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Kwon Oh-Yun
Paek U-Hyon
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Abstract
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The effects of ion on the formation of micelle colloid of nonionic surfactants, nonylphenol-(ethylene oxide)n [NP-(EO)n: n= 11, 40, 100) were investigated by the iodine solubilization method. The characteristics of spectra depended on the concentration of ion and the number of EO unit. Above CMC(critical micelle concentration), the intensity of the CT (charge transfer) band by the addition of ion for the NP-(EO)11 and NP-(EO)40 increased and when decreased and for the NP-(EO)In continuously increased. The increase in the intensity of CT band were attributed to the compactness of micelle in the presence of ion. These phenomena may be explained by the fact that the linear ethylene oxide (EO) chain, relatively free to assume various configuration in aqueous solution, could form a pseudo-crown ether structures capable of forming complexes with ion.
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