Effect of external fluid and inline crosslinking on the performance of polyimide hollow fibres prepared by using a triple–orifice spinneret

The present work proposes the use of a triple–orifice spinneret for producing hollow fibres (HFs), exploring the use of an external fluid to modify the gas transport properties of the resulting membranes. In addition, a method that includes the crosslinking step within the dry-jet/wet-quench spinnin...

Full description

Saved in:
Bibliographic Details
Published inJournal of membrane science Vol. 570-571; pp. 410 - 417
Main Authors Bernardo, Paola, Prete, Sabrina, Clarizia, Gabriele, Tasselli, Franco
Format Journal Article
LanguageEnglish
Published Elsevier B.V 15.01.2019
Subjects
Crosslinking
Gas separation
Hollow fibre membranes
Triple–orifice spinneret
Crosslinking
Gas separation
Hollow fibre membranes
Triple–orifice spinneret
Online AccessGet full text

Cover

More Information
Summary:The present work proposes the use of a triple–orifice spinneret for producing hollow fibres (HFs), exploring the use of an external fluid to modify the gas transport properties of the resulting membranes. In addition, a method that includes the crosslinking step within the dry-jet/wet-quench spinning process, using a crosslinker solution as bore fluid or as external fluid is proposed. The protocol was applied to the preparation and simultaneous modification of polyimide-based HFs. The HFs were characterized by investigating the changes of the morphology and gas permeo-selective properties as consequence of the spinning conditions. •An innovative inline crosslinking approach in HF spinning has been successfully developed.•The key role of the external fluid, used in triple orifice spinning, on the gas transport properties of HFs has been proved.•Different bore and shell fluids combinations have been investigated.
ISSN:0376-7388
1873-3123
DOI:10.1016/j.memsci.2018.10.046