Synthesis,characterization and application of PVA/ionic liqu

发布时间：2020-12-31 03:02

　　In this study,polyvinyl alcohol（PVA）–ionic liquid（IL） membranes were prepared for the separation of isopropyl alcohol（IPA）–water azeotropic mixtures by pervaporation.PVA-IL composite membranes were prepared by simple solvent evaporation method using four ILs,viz.,1-n-butyl-3-methylimidazolium chloride（BMIMCl）,1-hexyl-3-methylimidazolium chloride（HMIMCl）,1-hexyl-3-methylimidazolium tetra fluoroborate（HMIMBF4） and 1-octyl-3-methylimidazolium chloride（OMIMCl）.Three ILs were used to study the effect... 

【文章来源】：Chinese Journal of Chemical Engineering. 2017年10期

【文章页数】：10 页

【文章目录】：
1. Introduction
2. Experimental
    2.1. Materials
    2.2. Fabrication of composite membrane
    2.3. Membrane characterization
        2.3.1. Contact angle measurement
        2.3.2. Fourier transform infrared spectroscopy （FTIR）
        2.3.3. Scanning electron microscopy （SEM）
    2.4. Pervaporation experiments
    2.5. Degree of swelling of membrane
3. Results and Discussion
    3.1. Membrane characterization
        3.1.1. Contact angle measurement
        3.1.2. FTIR studies
        3.1.3. Scanning electron microscopy （SEM）
    3.2. Degree of swelling
    3.3. Effect of feed composition
    3.4. Effect of feed temperature
    3.5. Effect on diffusion coefficients
    3.6. Effect on enrichment factor （β）
    3.7. Effect of alkyl chain of ionic liquid on pervaporation
        3.7.1. Effect of feed composition
        3.7.2. Comparison of diffusion coefficients
    3.8. Effect of anion of ionic liquid on pervaporation
4. Conclusions



本文编号：2948827