PREPARATION OF POLYPROPYLENE HOLLOW FIBER MEMBRANE BY MELT-SPINNING METHOD

This study deals with the preparation of hollow fiber membrane made from polypropylene (PP) for gas separation. Asymmetric hollow fiber membranes were prepared from polypropylene by using meltspinning process. The process was carried out in selected conditions, such as controlled cooling conditions in the sub-spinneret zone and extrusion rate. Hollow fibers were extruded on an extruder with extrusion rate 20 m/min. Hollow fibers were obtained with the following typical geometries: outer diameter, 300 μm; inner diameter, 200 μm; length, 20 cm.