Thermodynamic aspects of nonionic surfactant—Water systems

Thermodynamic aspects of nonionic surfactant—Water systems
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非离子表面活性剂的热力学方面——水系统

DOI:
10.1016/0021-9797(70)90179-7
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发表时间:
1970
期刊:
--
影响因子:
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通讯作者:
K. Shinoda
K. Shinoda
中科院分区:
--
文献类型:
--
作者:
K. Shinoda

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确定了辛氧乙烯十二烷基醚与水体系的相图。根据这些结果以及已发表的热力学数据,讨论了非离子表面活性剂-水体系的热力学方面和溶解机理。与普通溶液不同,非离子表面活性剂的水溶液原则上类似于两相的精细分散体。一种是含有极少量非离子表面活性剂(0.02 wt%)的水相,另一种是溶胀的表面活性剂相。热力学性质与这样的模型一致。生物聚合物和聚皂的溶解机制可以类似地解释。
The phase diagram of octaoxyethylene dodecylethervs.water system has been determined. On the basis of these results as well as of published thermodynamic data, the thermodynamic aspects and the dissolution mechanism of nonionic surfactant-water systems are discussed. Unlike ordinary solutions, an aqueous solution of nonionic surfactant resembles, in principle, a fine dispersion of the two phases. One is the water phase containing a very small amount of nonionic surfactant (0.02 wt %), and the other is the swollen surfactant phase. The thermodynamic properties agree with such a model. The mechanism of the dissolution of biopolymers and polysoaps can be explained similarly.