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研究了藻朊酸钠均质膜对有机液／水混合体系的渗透汽化特性。结果表明，藻朊酸钠对甲醇、乙醇、异丙醇、丙酮、四氢呋喃及二氧六环等有机溶剂同水的混合液均表现为水优先透过，其渗透通量及选择分离系数都非常高。对８０ｗｔ％的四氢呋喃水溶液，５５℃下，通量Ｑ达到２４８９ｇ／ｍ２·ｈ，水对四氢呋喃的分离系数趋于无穷大；对８０ｗｔ％的二氧六环水溶液，Ｑ为２８６２ｇ／ｍ２·ｈ，分离系数为３９９９６（６０℃）。通量与温度间呈Ａｒｒｈｅｎｉｕｓ关系。比较了两种藻朊酸钠样品对有机液／水混合体系的渗透汽化特性，讨论了化学组成、结构的不同，对膜性能的影响。
The pervaporation characteristics of the sodium alginate homogeneous membrane on the organic liquid / water mixed system were studied. The results show that sodium alginate has the highest preferential penetration of water in the mixed solution of organic solvents such as methanol, ethanol, isopropanol, acetone, tetrahydrofuran and dioxane with water, and the permeation flux and the selective separation coefficient are very high high. For the 80wt% aqueous tetrahydrofuran solution, the Q of water reaches 2489g / m2 · h at 55 ℃, the separation coefficient of water to tetrahydrofuran tends to infinity; Q is 2862g / m2 · h for 80wt% aqueous solution of dioxane, The coefficient is 39996 (60 ° C). Arrhenius relationship between flux and temperature. The pervaporation characteristics of two sodium alginate samples on organic liquid / water mixtures were compared. The effects of chemical composition, structure and membrane properties were discussed.