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本文研究了以辐照聚苯乙烯-丁二烯-4-乙烯基吡啶嵌段共聚物为膜基体所制成的嵌镶离子交换膜的基本性能.研究表明所制备的嵌镶膜在两端浓度分别为0.1及0.001 mol/L KCl 中的水渗析系数及电解质渗析系数分别是2.40×10~(-5)mol/cm~2·min及2.10×10~(-8)mol/cm~2·s.用所制备的嵌镶离子交换膜测试了牛血清白蛋白(M=67,000)与KCl混合溶液,蔗糖(M=343)与KCl混合溶液的膜分离效果.实验表明对上述两种非电解质均不能通过膜、而电解质KCl则可以.上述两种混合溶液中KCl渗透系数分别为J_(KCl)(牛血清白蛋白)=1.08×10~(-8)mol/cm~2·s及J_(KCl)(蔗糖)=1.10×10~(-8)mol/cm~2·s.
In this paper, we studied the basic performance of the ion-exchange membrane made of irradiated polystyrene-butadiene-4-vinylpyridine block copolymer as a membrane matrix.It was found that the prepared ion- The water dialysis coefficient and the electrolyte dialysis coefficient were 2.40 × 10 ~ (-5) mol / cm ~ 2 · min and 2.10 × 10 ~ (-8) mol / cm ~ 2 respectively in 0.1 and 0.001 mol / L KCl · S. The membrane separation efficiency of mixed solution of bovine serum albumin (M = 67,000) and KCl, mixed solution of sucrose (M = 343) and KCl was tested using the prepared ion exchange membrane. Experiments show that the above two kinds of non- Electrolytes can not pass through the membrane, and electrolyte KCl can be. The KCl permeation coefficients of the two mixed solutions are J_ (KCl) (bovine serum albumin) = 1.08 × 10 -8 mol / cm ~ 2 · s and J_ (KCl) (sucrose) = 1.10 × 10 ~ (-8) mol / cm ~ 2 · s.