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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：微量量热法研究DMF /长链醇体系中T = 298.15至T = 313.15 K的非离子表面活性剂（Tween80）的CMC和热力学功能

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摘要

The power-time curves of the micelle formation process were determined for the nonionic surfactant Tween80/nonaqueous 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 Δ Hmθ values were obtained. The corresponding values of Δ G_mθ and Δ S_m~θ 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ΔHmθ值。还计算了ΔG_mθ和ΔS_m〜θ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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