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Separation and Purification of Chiral Compounds Using Crosslinked Sodium Alginate Membranes  

김지혜 (한국화학연구원 분리막다기능소재연구센터)
김상균 (한국화학연구원 분리막다기능소재연구센)
이규호 (한국화학연구원 분리막다기능소재연구센)
제갈종건 (한국화학연구원 분리막다기능소재연구센터)
Publication Information
Polymer(Korea) / v.28, no.4, 2004 , pp. 352-359 More about this Journal
Abstract
Membrane technology was used for the optical resolution of the various racemic compounds such as tryptophan, tyrosine and phenylalanine, using enantioselective membranes prepared from sodium alginate (SA) and glutaraldehyde as a membrane material and crosslinking agent, respectively, The chemical structure of the membranes was characterized with FT-IR spectrophotometry and 3D molecular structure modeling study was done to figure out the optical resolution mechanism through the membrane. Effects of degree of crosslinking, feed concentration, operating pressure and different kinds of feed solution on the membrane performances were studied. As results, it was found that with increasing degree of crosslinking and membrane thickness, and decrease in the concentration of the feed solution and smaller size of solutes, the enantinselectivity of the membrane was improved. When the sodium alginate membranes with 80% of swelling index and 79${\mu}{\textrm}{m}$ of thickness were used, 77% of enantiomeric excess was obtained.
Keywords
Sodium alginate membrane; optical resolution; ${\alpha}$-amino acid.;
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