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.
Effect of external fluid and inline crosslinking on the performance of polyimide hollow fibres prepared by using a triple-orifice spinneret
Bernardo P;Prete S;Clarizia G;Tasselli F
2019
Abstract
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.File in questo prodotto:
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