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以FT-IR方法研究了水/C12-EOx-C12·2Br/正己醇/正庚烷形成的W/O微乳中水的状态.结果表明,其中的水存在4种状态,分别为阳离子头基结合水、反离子结合水、类似本体的水以及束缚在微乳栅栏层中的水.由解卷积技术分解FT-IR谱图,进而获得每个表面活性剂分子对应于这4种状态水分子的数目nN+,nBr-,nb和nf.随着水含量(W0)增加,nb急剧增大,nN+少许上升,而nf和nBr-维持不变,这说明微乳水核逐渐长大,且在所考察W0范围内,表面活性剂头基解离度保持不变.
The state of water in W / O microemulsion formed by water / C12-EOx-C12 · 2Br / n-hexanol / n-heptane was studied by FT-IR method.The results showed that the water existed in four states, Base-bound water, counter-ion bound water, bulk-like water, and water trapped in the micro-emulsion barrier layer.The FT-IR spectra were resolved by deconvolution techniques to obtain the results for each of the surfactant molecules corresponding to these four states The number of water molecules is nN +, nBr-, nb and nf. As water content (W0) increases, nb increases sharply, nN + increases slightly while nf and nBr- remain unchanged, indicating that micro- And in the investigated W0 range, the surfactant head base dissociation remains unchanged.