Artificial membranes from multiblock copolymers. 5. Transport behaviors of organic and inorganic solutes through a charge-mosaic membrane
Artificial membranes from multiblock copolymers. 5. Transport behaviors of organic and inorganic solutes through a charge-mosaic membrane
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由多嵌段共聚物制成的人造膜。
DOI：
10.1021/i300022a031
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发表时间：
1986
期刊：
影响因子：
--
通讯作者：
Y. Miyaki
中科院分区：
文献类型：
--
作者：
K. Hirahara;Shinichi Takahashi;M. Iwata;Teruo Fujimoto;Y. Miyaki
研究了单独或混合溶液中有机和无机溶质通过由五嵌段共聚物聚(异戊二烯-b-苯乙烯-6-丁二烯-6-<4-乙烯基苄基)二甲胺-b-异戊二烯制备的镶嵌荷电膜的传输行为。数据表明，该膜可应用于含有低分子量有机物的溶液的脱盐，也可用于将这些有机物相互分离。一价无机电解质（例如 KCl、NaCl、HCl 和 NaOH）的渗透率约为有机非电解质（例如葡萄糖和蔗糖）的 50-200 倍。有机酸和胺在 pH 范围内具有很强的渗透性，在该范围内它们会解离成离子。氨基酸在其等电点 pH 值下表现出较低的渗透性。在含有两种电解质的溶液的透析实验中观察到明显的离子耦合传输。
Transport behaviors of organic and inorganic solutes in individual or mixed solutions through the charge-mosaic membrane prepared from the pentablock copolymer poly (lsoprene-b-styrene-6-butadlene-6-< 4-vinylbenzyl) dime-thylamine-b-isoprene) were studied. The data indicate that the membrane can be applied to desalt solutions containing organic substances of low molecular weight and also to separate such organic substances mutually. The permeabilities of uni-univalent inorganic electrolytes, such as KCI, NaCI, HCI, and NaOH, are about 50-200 times those of organic nonelectrolytes, such as glucose and sucrose. Organic acids and amines are very permeable in the pH range where they dissociate into ions. Amino acids exhibit low values of permeability at the pH of their isoelectric points. Marked coupled transports of Ions are observed in the dialysis experiments for solutions containing two kinds of electrolytes.