ISSN:
0025-116X
Keywords:
Chemistry
;
Polymer and Materials Science
Source:
Wiley InterScience Backfile Collection 1832-2000
Topics:
Chemistry and Pharmacology
,
Physics
Notes:
Membranes consisting of N-acylated chitosan and carrying hydrophobic groups were prepared and the states of water in these membranes were examined by differential scanning calorimetry (DSC). The contents of freezable and non-freezable water were found to be closely related with the structure and properties of the membranes. On the other hand, their permeability properties for sodium salts are found to be affected considerably by modifying the membrane structure as well as the cationically charged groups. With respect to D,L-amino acids, the selective permeation of the L-isomer was enhanced in the hydrophobic chitosan membrane, suggesting the possibility to separate optical isomers by membrane transport.
Additional Material:
9 Ill.
Type of Medium:
Electronic Resource
URL:
http://dx.doi.org/10.1002/macp.1991.021921022
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