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Titolo:
Hindered diffusion of flexible polymers through polyimide ultrafiltration membranes
Autore:
Beerlage, MAM; Peeters, JMM; Nolten, JAM; Mulder, MHV; Strathmann, H;
Indirizzi:
Univ Twente, Fac Chem Technol, NL-7500 AE Enschede, Netherlands Univ Twente Enschede Netherlands NL-7500 AE 500 AE Enschede, Netherlands KEMA, NL-6812 AR Arnhem, Netherlands KEMA Arnhem Netherlands NL-6812 ARKEMA, NL-6812 AR Arnhem, Netherlands Sigma Coatings Res Amsterdam, NL-1040 HB Amsterdam, Netherlands Sigma Coatings Res Amsterdam Amsterdam Netherlands NL-1040 HB etherlands
Titolo Testata:
JOURNAL OF APPLIED POLYMER SCIENCE
fascicolo: 9, volume: 75, anno: 2000,
pagine: 1180 - 1193
SICI:
0021-8995(20000228)75:9<1180:HDOFPT>2.0.ZU;2-V
Fonte:
ISI
Lingua:
ENG
Soggetto:
MICROPOROUS MEMBRANES; POLYSTYRENE SOLUTIONS; POROUS MEMBRANES; SMALL PORES; MODEL MEMBRANES; MACROMOLECULES; SIZE; DEGRADATION; PARTICLES; TRANSPORT;
Keywords:
membrane characterization; ultrafiltration; hindered diffusion;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Physical, Chemical & Earth Sciences
Engineering, Computing & Technology
Citazioni:
49
Recensione:
Indirizzi per estratti:
Indirizzo: Mulder, MHV Univ Twente, Fac Chem Technol, POB 217, NL-7500 AE Enschede, Netherlands Univ Twente POB 217 Enschede Netherlands NL-7500 AE therlands
Citazione:
M.A.M. Beerlage et al., "Hindered diffusion of flexible polymers through polyimide ultrafiltration membranes", J APPL POLY, 75(9), 2000, pp. 1180-1193

Abstract

The hindered diffusion of polystyrene in dilute solutions of ethyl acetatethrough polyimide ultrafiltration membranes has been investigated. The present system did not show specific membrane-solute interactions; furthermore, polystyrene can be considered as a flexible polymer coil. It is shown that the hindered diffusive permeability for monodisperse dilute solutions fora series of molecular weights can be compared well with the diffusive permeability curve of one polydisperse dilute polystyrene solution. In the caseof very dilute solutions, the polymer coils have no interaction with each other, and the whole range of molecular-weight-dependent permeabilities canbe determined from only one measurement. The diffusion behavior of polydisperse solutions through various polyimide membranes has been investigated as well. It was found that the diffusive permeability curve is strongly dependent on the type of membrane, that is, on the pore size distribution. It was not possible to calculate a pore size distribution from diffusion experiments due to mathematical limitations. Nevertheless, it was shown that hindered diffusion measurements are useful to estimate a maximum pore size for each membrane. (C) 2000 John Wiley & Sons, Inc.

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Documento generato il 14/07/20 alle ore 13:21:49