JOURNAL OF CHEMICAL ENGINEERING OF JAPAN
Online ISSN : 1881-1299
Print ISSN : 0021-9592
Separation Engineering
Imprinting Effect Inducing Crystallization of Uracil on Polymer Membrane Prepared in Supercritical CO2 Phase Inversion
Quanqiu ZhangTakaomi Kobayashi
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2009 Volume 42 Issue 1 Pages 21-28

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Abstract

Crystallization of uracil (URA) induced by the imprinting effect is observed when a poly(acrylonitrile-co-methacrylic acid) membrane has been prepared in supercritical CO2 using phase-inversion imprinting technology. The URA-imprinted membrane forms flower-like crystals of URA on the surface, but neither a non-imprinted membrane nor the membrane left in the URA aqueous solution shows crystal formation. Effects of organic solvents on the URA-imprinted membrane are examined for the membrane was prepared in supercritical CO2 fluid. Evidence shows that supercritical CO2 media is important for the formation of URA crystals on the imprinted membrane.

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© 2009 The Society of Chemical Engineers, Japan
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