Properties of Polymer Solutions Intended for Formation of Hollow Fibers Membranes by Inversion Phases Process
The result's identifiers
Result code in IS VaVaI
<a href="https://www.isvavai.cz/riv?ss=detail&h=RIV%2F28676092%3A_____%2F18%3AN0000013" target="_blank" >RIV/28676092:_____/18:N0000013 - isvavai.cz</a>
Result on the web
<a href="http://dx.doi.org/10.3933/ApplRheol-28-65935" target="_blank" >http://dx.doi.org/10.3933/ApplRheol-28-65935</a>
DOI - Digital Object Identifier
<a href="http://dx.doi.org/10.3933/ApplRheol-28-65935" target="_blank" >10.3933/ApplRheol-28-65935</a>
Alternative languages
Result language
angličtina
Original language name
Properties of Polymer Solutions Intended for Formation of Hollow Fibers Membranes by Inversion Phases Process
Original language description
The gas separation process by asymmetric polymeric membranes has received much attention during the last decades because of its more energy efficiency than other conventional separation processes. Hollow fibers are the most favored membrane geometry owing to their high surface area per unit volume of membrane module. One of the key elements determining the potential and applications of asymmetric hollow-fiber membranes are the structural properties mainly including pore size, pore distribution, selective layer thickness, molecular orientation and defectiveness. These elements can generally vary depending on conditions during dry-jet wet-spinning process. Flow conditions in spinneret during extrusion are known to affect the dense-layer of hollow fibers and possibly to enhance separation performance of hollow fibers. The aim of this study was to determine flow conditions of polyetherimide/N-Methyl-2-pyrrolidone solvent/ethanol non-solvent spinning solutions flowing through concentric annulus of spinneret during hollow fiber spinning process. The rotational rheometer was used to characterize rheological properties of spinning solutions. Newtonian behavior of the spinning solutions with arbitrary composition was shown. The effect of spinning solution and spinneret dimension on flow profile in spinneret was investigated. The Newtonian character of the spinning solutions caused constant velocity profile resp. shear rate profile regardless of dope composition when flowing through a spinneret with some flowrate. It has been shown the spinneret dimensions and geometry play a crucial role in controlling the shear flow in spinneret. The phase behavior of the PEI/NMP/EtOH dope system at a temperature of the hollow fiber spinning process (40 °C) was studied.
Czech name
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Czech description
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Classification
Type
J<sub>imp</sub> - Article in a specialist periodical, which is included in the Web of Science database
CEP classification
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OECD FORD branch
20506 - Coating and films
Result continuities
Project
<a href="/en/project/FV10061" target="_blank" >FV10061: Development of membranes and membrane modules for gas separation</a><br>
Continuities
P - Projekt vyzkumu a vyvoje financovany z verejnych zdroju (s odkazem do CEP)
Others
Publication year
2018
Confidentiality
S - Úplné a pravdivé údaje o projektu nepodléhají ochraně podle zvláštních právních předpisů
Data specific for result type
Name of the periodical
Applied Rheology
ISSN
1430-6395
e-ISSN
1617-8106
Volume of the periodical
28
Issue of the periodical within the volume
6
Country of publishing house
CH - SWITZERLAND
Number of pages
7
Pages from-to
65935
UT code for WoS article
000453672500005
EID of the result in the Scopus database
2-s2.0-85057988193