publication . Doctoral thesis . 2010

Transport of Liquid Phase Organic Solutes in Liquid Crystalline Membranes

Han, Sangil;
Open Access
  • Published: 08 Sep 2010
  • Publisher: Virginia Tech
  • Country: United States
Abstract
Porous cellulose nitrate membranes were impregnated with 8CB and PCH5 LCs (liquid crystals) and separations of solutes dissolved in aqueous phases were performed while monitoring solute concentration via UV-VIS spectrometry. The diffusing organic solutes, which consist of one aromatic ring and various functional groups, were selected to exclude molecular size effects on the diffusion and sorption. We studied the effects on solute transport of solute intra-molecular hydrogen bonding and solute/LC intermolecular hydrogen bonding. Hydrogen-bonding effects are a significant factor in the permeation selectivity of positional isomers. The reduction of available hydrog...
Subjects
free text keywords: enantiomers, circular dichroism, chirality, Liquid crystals, membrane, isomers
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Doctoral thesis . 2010
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