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.
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 interracial 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.
出处
《过程工程学报》
EI
CAS
CSCD
北大核心
2005年第5期572-575,共4页
The Chinese Journal of Process Engineering
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
高效液相色谱
界面性能
ethyl cellulose
polyvinyl alcohol
solution blending
liquid-solid phase inversion method
compatibility
HPLC
interracial parameters
