Liquid membrane applied in soil has a good soil moisture conservation and evaporation suppression performance. Application of spectrum analysis technology to understand its structure and micro morphological characteristics will be help to reveal the soil moisture conservation mechanism of liquid membrane. In this paper, we used the three types of liquid membrane as the research object based on the laboratory preparation, with infrared spectrometer (FTIR) and environmental scanning electron

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... scope (ESEM) as the means, analysis the soil moisture mechanism of liquid membrane.The results showed that the -OH between the CMC and PVA generated intermolecular hydrogen bonds, the formation of hydrogen bonds between molecules of the two components strengthened the two-phase's compatibility, increasing the liquid membrane's effective groups and forming a dense mesh structure.ESEM observation showed that liquid membrane can effectively cementing soil particles, generating the soil-membrane structure, reducing soil moisture to evaporate, improve soil moisture conservation performance. keywords: liquid membrane; microscopic mechanism; FTIR;ESEM , 1022 matecconf/2016 MATEC Web of Conferences 61 610 , 1022 matecconf/2016 MATEC Web of Conferences 61 610 3 2016 APOP