Microstructured hollow fibers and microsieves: fabrication, characterization and filtration applications

Pınar Zeynep Culfaz

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

82 Downloads (Pure)

Abstract

This thesis describes the preparation, characterization and applications of microstructured membranes. Phase Separation MicroFabrication (PSµF) is used to prepare the membranes. This technique relies on using microstructured silicon or metal templates during the preparation of the membranes and transferring the microstructure of these templates to the membranes during the phase inversion process which forms the membranes. The main focus of the work is on hollow fiber membranes with microstructured outer or inner surfaces. The fabrication of these membranes and the effect of various parameters on the microstructure, the permeability and separation properties of the membranes are described. The fouling behavior of these membranes is explored in dead-end, cross-flow and submerged and aerated filtration operations. The Permeate Flux-Transmembrane Pressure relationship and real-time observation methods such as NMR imaging and Direct Visual Observation are used to study the fouling on the membranes. Apart from microstructured hollow fibers, in one chapter, the fabrication of polymeric microsieves by PsµF is described. This chapter focuses on a solvent-based method to downscale microsieve perforation size and the effect of mold design on the release of the microsieves from the molds. The results presented in the thesis shed insight on the processes which occur during the formation of the microstructured membranes and the filtrations carried out with these membranes.
Original languageEnglish
Awarding Institution
  • University of Twente
Supervisors/Advisors
  • Lammertink, Rob G.H., Supervisor
  • Wessling, Matthias , Co-Supervisor
Award date3 Dec 2010
Place of PublicationEnschede
Publisher
Print ISBNs978-90-365-3117-7
DOIs
Publication statusPublished - 3 Dec 2010

Fingerprint

Membranes
Fabrication
Fibers
Fouling
Microstructure
Microfabrication
Molds
Silicon
Phase separation
Metals
Fluxes

Keywords

  • METIS-269655
  • IR-74767

Cite this

Culfaz, Pınar Zeynep. / Microstructured hollow fibers and microsieves : fabrication, characterization and filtration applications. Enschede : University of Twente, 2010. 178 p.
@phdthesis{65ccc41a03924b9698a8db5ce4f3dc1f,
title = "Microstructured hollow fibers and microsieves: fabrication, characterization and filtration applications",
abstract = "This thesis describes the preparation, characterization and applications of microstructured membranes. Phase Separation MicroFabrication (PSµF) is used to prepare the membranes. This technique relies on using microstructured silicon or metal templates during the preparation of the membranes and transferring the microstructure of these templates to the membranes during the phase inversion process which forms the membranes. The main focus of the work is on hollow fiber membranes with microstructured outer or inner surfaces. The fabrication of these membranes and the effect of various parameters on the microstructure, the permeability and separation properties of the membranes are described. The fouling behavior of these membranes is explored in dead-end, cross-flow and submerged and aerated filtration operations. The Permeate Flux-Transmembrane Pressure relationship and real-time observation methods such as NMR imaging and Direct Visual Observation are used to study the fouling on the membranes. Apart from microstructured hollow fibers, in one chapter, the fabrication of polymeric microsieves by PsµF is described. This chapter focuses on a solvent-based method to downscale microsieve perforation size and the effect of mold design on the release of the microsieves from the molds. The results presented in the thesis shed insight on the processes which occur during the formation of the microstructured membranes and the filtrations carried out with these membranes.",
keywords = "METIS-269655, IR-74767",
author = "Culfaz, {Pınar Zeynep}",
year = "2010",
month = "12",
day = "3",
doi = "10.3990/1.9789036531177",
language = "English",
isbn = "978-90-365-3117-7",
publisher = "University of Twente",
address = "Netherlands",
school = "University of Twente",

}

Microstructured hollow fibers and microsieves : fabrication, characterization and filtration applications. / Culfaz, Pınar Zeynep.

Enschede : University of Twente, 2010. 178 p.

Research output: ThesisPhD Thesis - Research UT, graduation UTAcademic

TY - THES

T1 - Microstructured hollow fibers and microsieves

T2 - fabrication, characterization and filtration applications

AU - Culfaz, Pınar Zeynep

PY - 2010/12/3

Y1 - 2010/12/3

N2 - This thesis describes the preparation, characterization and applications of microstructured membranes. Phase Separation MicroFabrication (PSµF) is used to prepare the membranes. This technique relies on using microstructured silicon or metal templates during the preparation of the membranes and transferring the microstructure of these templates to the membranes during the phase inversion process which forms the membranes. The main focus of the work is on hollow fiber membranes with microstructured outer or inner surfaces. The fabrication of these membranes and the effect of various parameters on the microstructure, the permeability and separation properties of the membranes are described. The fouling behavior of these membranes is explored in dead-end, cross-flow and submerged and aerated filtration operations. The Permeate Flux-Transmembrane Pressure relationship and real-time observation methods such as NMR imaging and Direct Visual Observation are used to study the fouling on the membranes. Apart from microstructured hollow fibers, in one chapter, the fabrication of polymeric microsieves by PsµF is described. This chapter focuses on a solvent-based method to downscale microsieve perforation size and the effect of mold design on the release of the microsieves from the molds. The results presented in the thesis shed insight on the processes which occur during the formation of the microstructured membranes and the filtrations carried out with these membranes.

AB - This thesis describes the preparation, characterization and applications of microstructured membranes. Phase Separation MicroFabrication (PSµF) is used to prepare the membranes. This technique relies on using microstructured silicon or metal templates during the preparation of the membranes and transferring the microstructure of these templates to the membranes during the phase inversion process which forms the membranes. The main focus of the work is on hollow fiber membranes with microstructured outer or inner surfaces. The fabrication of these membranes and the effect of various parameters on the microstructure, the permeability and separation properties of the membranes are described. The fouling behavior of these membranes is explored in dead-end, cross-flow and submerged and aerated filtration operations. The Permeate Flux-Transmembrane Pressure relationship and real-time observation methods such as NMR imaging and Direct Visual Observation are used to study the fouling on the membranes. Apart from microstructured hollow fibers, in one chapter, the fabrication of polymeric microsieves by PsµF is described. This chapter focuses on a solvent-based method to downscale microsieve perforation size and the effect of mold design on the release of the microsieves from the molds. The results presented in the thesis shed insight on the processes which occur during the formation of the microstructured membranes and the filtrations carried out with these membranes.

KW - METIS-269655

KW - IR-74767

U2 - 10.3990/1.9789036531177

DO - 10.3990/1.9789036531177

M3 - PhD Thesis - Research UT, graduation UT

SN - 978-90-365-3117-7

PB - University of Twente

CY - Enschede

ER -