Microstructured hollow fibers for ultrafiltration

Pmar Zeynep Culfaz, P.Z. Culfaz, Hendrikus H.M. Rolevink, C.J.M. van Rijn, Rob G.H. Lammertink, Matthias Wessling

Research output: Contribution to journalArticleAcademicpeer-review

58 Citations (Scopus)

Abstract

Hollow fiber ultrafiltration membranes with a corrugated outer microstructure were prepared from a PES/PVP blend. The effect of spinning parameters such as air gap, take-up speed, polymer dope viscosity and coagulation value on the microstructure and membrane characteristics was investigated. Fibers with maximum 89% surface area enhancement were prepared. The structured fibers and the round fibers spun under the same conditions had comparable (intrinsic) pure water permeability, molecular weight cut-off, pore size distribution and average skin layer thickness. This implies that the flow through the unit volume of the structured fibers will be enhanced compared to their round counterparts, while maintaining the same separation properties. A colloidal filtration method was used to determine the skin layer thickness. Structured fibers spun with a slow-coagulating polymer dope had varying skin thickness throughout the outer surface, which was dependent on the geometry of the fiber and was probably caused by varying local coagulation conditions around the structured outer surface of the fibers. A polymer dope with high coagulation value, on the other hand, resulted in a structured fiber with a homogeneous skin layer all along the surface.
Original languageUndefined
Pages (from-to)32-41
JournalJournal of membrane science
Volume347
Issue number1-2
DOIs
Publication statusPublished - 2010

Keywords

  • IR-72309
  • METIS-260770

Cite this

Culfaz, Pmar Zeynep ; Culfaz, P.Z. ; Rolevink, Hendrikus H.M. ; van Rijn, C.J.M. ; Lammertink, Rob G.H. ; Wessling, Matthias. / Microstructured hollow fibers for ultrafiltration. In: Journal of membrane science. 2010 ; Vol. 347, No. 1-2. pp. 32-41.
@article{d26f10cee1484882b7c029302391c265,
title = "Microstructured hollow fibers for ultrafiltration",
abstract = "Hollow fiber ultrafiltration membranes with a corrugated outer microstructure were prepared from a PES/PVP blend. The effect of spinning parameters such as air gap, take-up speed, polymer dope viscosity and coagulation value on the microstructure and membrane characteristics was investigated. Fibers with maximum 89{\%} surface area enhancement were prepared. The structured fibers and the round fibers spun under the same conditions had comparable (intrinsic) pure water permeability, molecular weight cut-off, pore size distribution and average skin layer thickness. This implies that the flow through the unit volume of the structured fibers will be enhanced compared to their round counterparts, while maintaining the same separation properties. A colloidal filtration method was used to determine the skin layer thickness. Structured fibers spun with a slow-coagulating polymer dope had varying skin thickness throughout the outer surface, which was dependent on the geometry of the fiber and was probably caused by varying local coagulation conditions around the structured outer surface of the fibers. A polymer dope with high coagulation value, on the other hand, resulted in a structured fiber with a homogeneous skin layer all along the surface.",
keywords = "IR-72309, METIS-260770",
author = "Culfaz, {Pmar Zeynep} and P.Z. Culfaz and Rolevink, {Hendrikus H.M.} and {van Rijn}, C.J.M. and Lammertink, {Rob G.H.} and Matthias Wessling",
year = "2010",
doi = "10.1016/j.memsci.2009.10.003",
language = "Undefined",
volume = "347",
pages = "32--41",
journal = "Journal of membrane science",
issn = "0376-7388",
publisher = "Elsevier",
number = "1-2",

}

Microstructured hollow fibers for ultrafiltration. / Culfaz, Pmar Zeynep; Culfaz, P.Z.; Rolevink, Hendrikus H.M.; van Rijn, C.J.M.; Lammertink, Rob G.H.; Wessling, Matthias.

In: Journal of membrane science, Vol. 347, No. 1-2, 2010, p. 32-41.

Research output: Contribution to journalArticleAcademicpeer-review

TY - JOUR

T1 - Microstructured hollow fibers for ultrafiltration

AU - Culfaz, Pmar Zeynep

AU - Culfaz, P.Z.

AU - Rolevink, Hendrikus H.M.

AU - van Rijn, C.J.M.

AU - Lammertink, Rob G.H.

AU - Wessling, Matthias

PY - 2010

Y1 - 2010

N2 - Hollow fiber ultrafiltration membranes with a corrugated outer microstructure were prepared from a PES/PVP blend. The effect of spinning parameters such as air gap, take-up speed, polymer dope viscosity and coagulation value on the microstructure and membrane characteristics was investigated. Fibers with maximum 89% surface area enhancement were prepared. The structured fibers and the round fibers spun under the same conditions had comparable (intrinsic) pure water permeability, molecular weight cut-off, pore size distribution and average skin layer thickness. This implies that the flow through the unit volume of the structured fibers will be enhanced compared to their round counterparts, while maintaining the same separation properties. A colloidal filtration method was used to determine the skin layer thickness. Structured fibers spun with a slow-coagulating polymer dope had varying skin thickness throughout the outer surface, which was dependent on the geometry of the fiber and was probably caused by varying local coagulation conditions around the structured outer surface of the fibers. A polymer dope with high coagulation value, on the other hand, resulted in a structured fiber with a homogeneous skin layer all along the surface.

AB - Hollow fiber ultrafiltration membranes with a corrugated outer microstructure were prepared from a PES/PVP blend. The effect of spinning parameters such as air gap, take-up speed, polymer dope viscosity and coagulation value on the microstructure and membrane characteristics was investigated. Fibers with maximum 89% surface area enhancement were prepared. The structured fibers and the round fibers spun under the same conditions had comparable (intrinsic) pure water permeability, molecular weight cut-off, pore size distribution and average skin layer thickness. This implies that the flow through the unit volume of the structured fibers will be enhanced compared to their round counterparts, while maintaining the same separation properties. A colloidal filtration method was used to determine the skin layer thickness. Structured fibers spun with a slow-coagulating polymer dope had varying skin thickness throughout the outer surface, which was dependent on the geometry of the fiber and was probably caused by varying local coagulation conditions around the structured outer surface of the fibers. A polymer dope with high coagulation value, on the other hand, resulted in a structured fiber with a homogeneous skin layer all along the surface.

KW - IR-72309

KW - METIS-260770

U2 - 10.1016/j.memsci.2009.10.003

DO - 10.1016/j.memsci.2009.10.003

M3 - Article

VL - 347

SP - 32

EP - 41

JO - Journal of membrane science

JF - Journal of membrane science

SN - 0376-7388

IS - 1-2

ER -