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Titolo:
Effect of membrane preparation conditions on solute permeability in chitosan membrane
Autore:
Matsuyama, H; Shiraishi, H; Kitamura, Y;
Indirizzi:
Okayama Univ, Dept Environm Chem & Mat, Okayama 7008530, Japan Okayama Univ Okayama Japan 7008530 nm Chem & Mat, Okayama 7008530, Japan
Titolo Testata:
JOURNAL OF APPLIED POLYMER SCIENCE
fascicolo: 13, volume: 73, anno: 1999,
pagine: 2715 - 2725
SICI:
0021-8995(19990923)73:13<2715:EOMPCO>2.0.ZU;2-D
Fonte:
ISI
Lingua:
ENG
Soggetto:
WATER ETHANOL MIXTURES; SOLID-STATE STRUCTURE; PERVAPORATION SEPARATION; POLYSACCHARIDE MEMBRANES; POLY(VINYL ALCOHOL); PERMSELECTIVITY; ULTRAFILTRATION; DIFFUSION;
Keywords:
chitosan membrane; membrane preparation condition; asymmetric structure; theophylline; vitamin B-12;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
16
Recensione:
Indirizzi per estratti:
Indirizzo: Matsuyama, H Okayama Univ, Dept Environm Chem & Mat, 2-1-1 Tsushima Naka, Okayama 7008530, Japan Okayama Univ 2-1-1 Tsushima Naka Okayama Japan 7008530 Japan
Citazione:
H. Matsuyama et al., "Effect of membrane preparation conditions on solute permeability in chitosan membrane", J APPL POLY, 73(13), 1999, pp. 2715-2725

Abstract

Chitosan membrane was prepared in various conditions and diffusive permeabilities of theophylline and vitamin B-12 were investigated. The membrane preparation procedure consists of dissolving chitosan in acid solution, cast on the glass plate, drying the dope solution, and immersion of the plate inthe gelating agent. Effects of the kinds of acids to dissolve chitosan, chitosan concentration, drying time of the dope solution, and the kinds of the gelating agent on the membrane structure and performance were studied in detail. With increasing the chitosan concentration, the solute permeabilitydecreased, while the selectivity of theophylline to vitamin B-12 increased. The membrane changed from the wholly porous structure to the asymmetric structure by the increase of the chitosan concentration. Furthermore, the use of ethanol as the gelating agent brought about the wholly porous structure with the high permeability and the low selectivity. The asymmetric structure and the wholly dense structure were obtained in the cases of the gelating agents, such as aqueous NaOH solution and dimethyl sulfoxide (DMSO), respectively. Thus, the membrane structure can be controlled by the kinds of gelating agent. (C) 1999 John Wiley & Sons, Inc.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 22/01/20 alle ore 12:42:38