Study On Agcl/pmma Inorganic-organic Hybrid Membrane Preparation Via Microemulsion Polymerization

AgCl/PMMA (polymethyl methacrylate) inorganic-organic hybrid membranes were prepared via microemulsion situ polymerization. The exploratory research on microemulsion stability, reverse micelle structure, hybrid membranes morphology and the swelling-sorption behavior of cyclohexane and cyclohexene in hybrid membranes was carried out in this paper.MMA (methyl methacrylate) microemulsion stability was analysed through the measurement of conductivity. The results showed that the stable reverse microemulsion system could be obtained in the case of C_AOT =0.1-0.3M, C_salt =0.05M and w (water-to-surfactant mole ratio)=9. The fact for MMA microemulsion system that there was no conductivity critical point during the variation of w was very different from the other microemulsion system in which alkane was used as oil phase.The growth of AgCl nanoparticles was investigated by UV-Visible absorption spectra. Furthermore, the diameter attribution and configures of the nanoparticles were characterized by 90 Plus Particle Size Analyzer and TEM (Transmission Electron Microscope). The results revealed that all the AgCl nanoparticles in MMA microemulsion were spherical or sphere-like, the diameter was below 80nm and its attribution relatively narrow. In addition, it was also observed that the diameter of AgCl nanoparticles increased with w.The scanning electron microscope (SEM) showed that the inorganic- organic hybrid materials had core-shell structure (AgCl as the core and PMMA as the shell) after microemulsion polymerization and AgCl nanoparticles were evenly dispersed in the PMMA matrix. The swelling-sorption behavior of the cyclohexane/cyclohexene in AgCl/PMMA hybrid membranes and pure PMMA membrane were studied. The results indicated that the equilibrium swelling-sorption amount (A_∞) ratio of cyclohexen to cycloexane in hybrid membranes which was up to 130.4, was larger than that in the pure PMMA membranes of 54.7.