Charge‐mosaic membrane prepared from microspheres
Charge‐mosaic membrane prepared from microspheres
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由微球制备的电荷镶嵌膜
DOI：
10.1002/pola.10679
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发表时间：
2003
期刊：
影响因子：
--
通讯作者：
Fukutomi Takashi
中科院分区：
文献类型：
--
作者：
Takizawa Minoru;Sugito Yoshifumi;Oguma Naomi;Nakamura Michiei;Horiguchi Shojiro;Fukutomi Takashi
以直径250-350 nm的聚(4-乙烯基吡啶)微球为阴离子交换元件，线性聚苯乙烯磺酸钠为阳离子交换元件，制备了一种新型马赛克荷电膜。通过扫描电镜观察和膜的电导率证实了膜表面的镶嵌结构和膜内微球的连续连接。当微球在膜中的重量分数增加超过20-25wt%时，微球从膜表面的一侧连续连接到另一侧。该膜的KCl通量、KCl渗透系数、体积通量以及电解质（KCl）和非电解质（葡萄糖和蔗糖）的选择性透析分离表明其具有荷电镶嵌膜的特性。由镶嵌荷电膜的各原料构成的离子交换膜未表现出这些特性。
A new type of charge-mosaic membrane was prepared from poly(4-vinyl pyridine) microspheres 250-350 nm in diameter as an anion-exchange element and from linear poly(sodium styrene sulfonic acid) as a cation-exchange element. The mosaic structure on the surface of the membrane and the continuous connection of the microspheres in the membrane were confirmed by scanning electron microscopy observations and the electrical conductivity of the membrane. The microspheres were continuously connected from one side to the other side of the membrane surface when the weight fraction of the microspheres increased more than 20-25 wt % in the membrane. The flux of KCl, the permeability coefficient of KCl, the volume flux, and the selectivity dialysis separation of the electrolyte (KCl) and nonelectrolyte (glucose and saccharose) of the membrane indicated that it had the characteristic properties of a charge-mosaic membrane. Ion-exchange membranes composed of each raw material of the charge-mosaic membrane did not show these properties.