19F NMR Study of Molecular Aggregation of Lithium Perfluorooctylsulfonate in Water at Temperatures from 30 to 250°C

Journal of Physical Chemistry B

Volumn 104, Issue 2, 2000, Pages

  Bossev, Dobrin Petrov ^a   Matsumoto, Mutsuo ^a   Nakahara, Masaru ^a  

^a KYOTO UNIVERSITY   (Japan)

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EID: 0347616655     PISSN: 10895647     EISSN: None     Source Type: Journal    
DOI: None     Document Type: Article

References (24)

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17. The term "micelle" is used instead of "aggregate" for simplicity although at high temperatures the aggregation number is found to be very low; see Figure 3.
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20. - micelles, being just 0.3 at 30°C.
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22. Since this is a closed system, the vapor pressure of water rises to about 4 MPa at 250°C. The pressure effect on the cmc values at ambient temperatures is very small; the cmc varies within 10-15% when pressure is increased from 0.1 to 550 MPa; see (a) Sugihara, G.; Mukerjee, P. J. Phys. Chem. 1981, 85, 1612. (b) Offen, H. W. In Modern Aspects of Physical Chemistry at High Pressure; Osugi, J., Ed.; Physico-Chemical Society of Japan: Kyoto, 1980; pp 97-118, and references therein. Thus, the pressure effect is negligible at such conditions and eqs 9-12 hold with a satisfactory precision.
23. Since this is a closed system, the vapor pressure of water rises to about 4 MPa at 250°C. The pressure effect on the cmc values at ambient temperatures is very small; the cmc varies within 10-15% when pressure is increased from 0.1 to 550 MPa; see (a) Sugihara, G.; Mukerjee, P. J. Phys. Chem. 1981, 85, 1612. (b) Offen, H. W. In Modern Aspects of Physical Chemistry at High Pressure; Osugi, J., Ed.; Physico-Chemical Society of Japan: Kyoto, 1980; pp 97-118, and references therein. Thus, the pressure effect is negligible at such conditions and eqs 9-12 hold with a satisfactory precision.
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