Interfacial Properties of Ethyl Cellulose/Cellulose Acetate Blends by HPLC

Abstract

Abstract: The high performance liquid chromatography method (HPLC) with ethyl cellulose/cellulose acetate (EC/CA) blends and EC as column packing material, and small molecular weight compound as probe molecules was employed to measure the retention volume (VR) and equilibrium distribution coefficient (K) of both inorganic and organic solutes. The interfacial separation properties of EC/CA blends were characterized by the HPLC data. The effects of the blends on the interfacial adsorption properties, hydrophilicity, affinity, polar and non-polar parameters of EC membrane materials were studied subsequently. The research results indicate that the interfacial adsorption properties and hydrophilicity of EC have been improved by solution blending with CA. The alloys are superior to EC in the separation efficiency for non-dissociable polar organic solute. The EC/CA alloy (80:20, w) is suitable for desalting and desaccharifying.

Key words: ethyl cellulose, cellulose acetate, interfacial property, high performance liquid chromatography

摘要： The high performance liquid chromatography method (HPLC) with ethyl cellulose/cellulose acetate (EC/CA) blends and EC as column packing material, and small molecular weight compound as probe molecules was employed to measure the retention volume (VR) and equilibrium distribution coefficient (K) of both inorganic and organic solutes. The interfacial separation properties of EC/CA blends were characterized by the HPLC data. The effects of the blends on the interfacial adsorption properties, hydrophilicity, affinity, polar and non-polar parameters of EC membrane materials were studied subsequently. The research results indicate that the interfacial adsorption properties and hydrophilicity of EC have been improved by solution blending with CA. The alloys are superior to EC in the separation efficiency for non-dissociable polar organic solute. The EC/CA alloy (80:20, w) is suitable for desalting and desaccharifying.

关键词: ethyl cellulose, cellulose acetate, interfacial property, high performance liquid chromatography

GAO Su-lian;ZHOU Ning-guo;ZHANG Xiu-zhen;ZHANG Wei. Interfacial Properties of Ethyl Cellulose/Cellulose Acetate Blends by HPLC[J]. , 2007, 7(1): 152-154.

高素莲;周宁国;张秀真;张玮. Interfacial Properties of Ethyl Cellulose/Cellulose Acetate Blends by HPLC[J]. , 2007, 7(1): 152-154.

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