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首页> 外文期刊>Journal of Solution Chemistry >Microcalorimetric Studies on the CMC and Thermodynamic Functions of a Nonionic Surfactant (Tween80) in DMF/Long-Chain Alcohol Systems from T=298.15 to T=313.15 K
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Microcalorimetric Studies on the CMC and Thermodynamic Functions of a Nonionic Surfactant (Tween80) in DMF/Long-Chain Alcohol Systems from T=298.15 to T=313.15 K

机译：从T = 298.15到T = 313.15 K的DMC /长链醇体系中非离子表面活性剂（Tween80）的CMC和热力学函数的微量量热研究

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摘要

The power-time curves of the micelle formation process were determined for the nonionic surfactant Tween80onaqueous solvent (DMF)/long-chain alcohol (n-heptanol, n-octanol, n-nonanol, and n-decanol) systems by titration microcalorimetry at temperatures of (298.15, 303.15, 308.15, and 313.15) K. From the power-time curves, the CMC and $Delta H_{mathrm{m}}^{uptheta}$ values were obtained. The corresponding values of $Delta G_{mathrm{m}}^{uptheta}$ and $Delta S_{mathrm{m}}^{uptheta}$ were also calculated. The relationships of the CMC with the carbon number of the alcohol, the concentration of alcohol, and the temperature, along with the thermodynamic functions, are discussed.
机译：通过滴定微量热法测定了非离子表面活性剂Tween80 /非水溶剂（DMF）/长链醇（正庚醇，正辛醇，正壬醇和正癸醇）系统的胶束形成过程的功率时间曲线在（298.15、303.15、308.15和313.15）K的温度下。从功率时间曲线获得CMC和$ Delta H_ {mathrm {m}} ^ {uptheta} $值。还计算了$ Delta G_ {mathrm {m}} ^ {uptheta} $和$ Delta S_ {mathrm {m}} ^ {uptheta} $的对应值。讨论了CMC与醇的碳原子数，醇的浓度和温度之间的关系，以及热力学函数。

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