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运用微量热计(Microcalorimeter),傅立叶变换红外(FT-IR),对水/TX-100/正己醇/正辛烷反相微乳液体系的形成过程及水的微结构进行了研究.微量热结果表明该反相微乳液的形成过程为一放热过程,且为两步反应.第一步为TX-100单体中的聚氧乙烯醚键与水分子形成氢键的过程,然后是“包裹”在反相胶束中的聚氧乙烯醚键与H2O分子形成氢键的过程,这两步反应之间存在时间差,焓变在该反相微乳液的形成过程中起着主要作用.含水量不同时,体系分别形成结合水、束缚水和自由水,并用FT-IR对此加以证实,FT-IR测试结果表明结合水、束缚水和自由水羟基吸收峰分别位于3400±20cm-1、3550±20cm-1、3220±20cm-1,在反相微乳液中脂肪醚位于比芳基醚大的极性区域,因而先于芳基醚与水作用形成氢键.
The formation process of water / TX-100 / n-hexanol / n-octane reverse microemulsion system and the microstructure of water were studied by using Microcalorimeter and Fourier transform infrared (FT-IR) The microcalorimetric results show that the formation of the inverse microemulsion is an exothermic process and is a two-step reaction. The first step is the process of forming a hydrogen bond between the polyoxyethylene ether bond in the TX-100 monomer and the water molecule followed by the hydrogen bonding of the polyoxyethylene ether bond in the reverse micelle to the H2O molecule , There is a time lag between these two reactions, and enthalpy changes play a major role in the formation of the inverse microemulsion. When the water content was different, the bound water, irreducible water and free water were formed respectively by FT-IR and FT-IR. The results of FT-IR showed that the absorption peaks of bound water, irreducible water and free water were at 3400 ± 20cm-1 , 3550 ± 20 cm-1 and 3220 ± 20 cm-1, respectively. In the reversed-phase microemulsion, the aliphatic ethers are located in a larger polar region than the aryl ether and thus form hydrogen bonds prior to the interaction of the aryl ether with water.