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›› 2005, Vol. 5 ›› Issue (5): 572-575.

• 材料工程专栏 • 上一篇    下一篇

PVA/EC合金膜材料的制备及其界面性能表征

高素莲,王小飞,张秀真,刘建新   

  1. 安徽大学化学化工学院
  • 出版日期:2005-10-20 发布日期:2005-10-20

Preparation and Characterization of Interfacial Properties of PVA/EC Alloy Membrane Material

GAO Su-lian,WANG Xiao-fei,ZHANG Xiu-zhen,LIU Jian-xin   

  1. School of Chemistry and Chemical Engineering, Anhui University
  • Online:2005-10-20 Published:2005-10-20

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摘要： 采用溶液共混和液-固相转变法制备出聚乙烯醇/乙基纤维素(PVA/EC)合金和EC均质膜材料作为高效液相色谱柱填料. 采用 HPLC法探讨了合金化前后PVA膜材料的界面性能及亲水性变化，并以粘度法、折光指数法、红外光谱法及热重分析法研究了EC与PVA的相容性和热稳定性. 实验结果表明，两者之间具有很好的相容性；PVA/EC合金对不离解的极性有机物的分离性能优于EC均质膜材料.

关键词: 乙基纤维素, 聚乙烯醇, 溶液共混, 液-固相转变法, 相容性, 高效液相色, 面性能

Abstract: The polyvinyl alcohol/ethyl cellulose (PVA/EC) alloy was prepared by means of solution blending and liquid-solid phase inversion method. The HPLC method with PVA/EC alloy and EC as the column packing was employed to measure the retention values and equilibrium distribution coefficient of both inorganic solutes and organic solutes. The interfacial parameters and hydrophilicity were estimated from HPLC data, and the compatibility of alloy was also studied by means of viscometry, refractive index and IR. The experimental results show that PVA and EC have a good compatibility in PVA/EC alloy, and the alloy is superior to EC in separation efficiency for non-dissociable polar organic solutes.

Key words: ethyl cellulose, polyvinyl alcohol, solution blending, liquid-solid phase inversion method, compatibility, HPLC, interfacial parameters