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Dextran modifications of polysulfone UF-membranes: Streaming potential and BSA fouling characteristics

Wahlgren, Marie C LU ; Sivik, Björn LU and Nystrom, M (1990) In Acta Polytechnica Scandinavica, Chemical Technology Series 194. p.3-18
Abstract
Polysulfone ultrafiltration membranes were modified with dextran, dextran sulfate and diethylaminoethyl (DEAE) dextran. The behavior of the modified membranes towards static adsorption of bovine serum albumin (BSA) was investigated in the pH range 3-7. The modified membranes showed lower flux losses after protein adsorption than unmodified membranes. The plain dextran was considered to be the best choice of the three as a modifying agent. Streaming potentials were measured for DEAE dextran and dextran T500 modified membranes as a function of pH. The isoelectric points of the membranes were 5.9 and 4.6, respectively. Titration data for DEAE and dextran T500 are also presented. The modification of membranes with dextrans of different... (More)
Polysulfone ultrafiltration membranes were modified with dextran, dextran sulfate and diethylaminoethyl (DEAE) dextran. The behavior of the modified membranes towards static adsorption of bovine serum albumin (BSA) was investigated in the pH range 3-7. The modified membranes showed lower flux losses after protein adsorption than unmodified membranes. The plain dextran was considered to be the best choice of the three as a modifying agent. Streaming potentials were measured for DEAE dextran and dextran T500 modified membranes as a function of pH. The isoelectric points of the membranes were 5.9 and 4.6, respectively. Titration data for DEAE and dextran T500 are also presented. The modification of membranes with dextrans of different molecular weight average indicated that the shorter dextran molecules (Dextran T10) gave a better result than the larger ones (Dextran T500).
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organization
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type
Contribution to journal
publication status
published
subject
in
Acta Polytechnica Scandinavica, Chemical Technology Series
volume
194
pages
3 - 18
publisher
Finnish Academies of Technology
external identifiers
  • scopus:0025214887
ISSN
1239-0518
language
English
LU publication?
yes
id
9386fbff-b432-46e5-874c-53a2a78bcefc
date added to LUP
2016-04-15 19:20:09
date last changed
2017-11-09 15:59:06
@article{9386fbff-b432-46e5-874c-53a2a78bcefc,
  abstract     = {Polysulfone ultrafiltration membranes were modified with dextran, dextran sulfate and diethylaminoethyl (DEAE) dextran. The behavior of the modified membranes towards static adsorption of bovine serum albumin (BSA) was investigated in the pH range 3-7. The modified membranes showed lower flux losses after protein adsorption than unmodified membranes. The plain dextran was considered to be the best choice of the three as a modifying agent. Streaming potentials were measured for DEAE dextran and dextran T500 modified membranes as a function of pH. The isoelectric points of the membranes were 5.9 and 4.6, respectively. Titration data for DEAE and dextran T500 are also presented. The modification of membranes with dextrans of different molecular weight average indicated that the shorter dextran molecules (Dextran T10) gave a better result than the larger ones (Dextran T500). <br/>},
  author       = {Wahlgren, Marie C and Sivik, Björn and Nystrom, M},
  issn         = {1239-0518},
  language     = {eng},
  pages        = {3--18},
  publisher    = {Finnish Academies of Technology},
  series       = {Acta Polytechnica Scandinavica, Chemical Technology Series},
  title        = {Dextran modifications of polysulfone UF-membranes: Streaming potential and BSA fouling characteristics},
  volume       = {194},
  year         = {1990},
}