Active skin layer formation control of microporous asymmetric polysulphone hollow fibre membranes

Abstract

Hollow fibres were spun from a mixture of 18% polysulphone, 67% dimethylacetamide, and 15% polyvinylpyrrolidone (or 2-methoxyethanol). Exact spinning speeds and dimensions are specified. The use of different bore coagulants (water, glycerin, isopropyl alcohol) produces strong, weak or double-skinned membranes. Ultrafiltration capacities are indicated. - Chemical Abstracts, 112(18), 1990, abstract 160309