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ZetaPALS相位分析光散射原理（PALS）測ζ電位應(yīng)用案例5
文獻名：Interfacial polymerization of thin film nanocomposites: A new concept for reverse osmosis membranes
作者：Byeong-Heon Jeonga, Eric M.V. Hoeka, Yushan Yanb, Arun Subramanib, Xiaofei Huanga, Gil Hurwitza, Asim K. Ghosha, Anna Jawora
（aCivil & Environmental Engineering Department and Water Technology Research Center, University of California, Los Angeles, CA 90095, USA
bChemical and Environmental Engineering Department, University of California, Riverside, CA 92521, USA）
摘要：Here, we report on a new concept for formation of mixed matrix reverse osmosis membranes by interfacial polymerization of nanocomposite thin films
in situ on porous polysulfone supports. Nanocomposite films created for this study comprise NaA zeolite nanoparticles dispersed within 50–200 nm thick polyamide films. Hand-cast pure polyamide membranes exhibit surface morphologies characteristic of commercial polyamide RO membranes, whereas nanocomposite membranes
have measurably smoother and more hydrophilic, negatively charged surfaces. At the highest nanoparticle loadings tested, hand-cast nanocomposite film morphology is visibly different and pure water permeability is nearly double that of hand-cast polyamide membranes with equivalent solute rejections. Comparison of membranes formed using pore-filled and pore-opened zeolites suggest nanoparticle pores play an active role in water permeation and solute rejection. The best performing nanocomposite membranes
exhibit permeability and rejection characteristics comparable to commercial RO membranes. As a concept, thin film nanocomposite membrane technology
may offer new degrees of freedom in tailoring RO membrane separation performance and material properties.
關(guān)鍵詞：Reverse osmosis; Interfacial polymerization; Zeolite; Polyamide; Mixed matrix; Nanocomposite
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