WET-SPINNING POLYACRYLONITRILE SOLUTION CONTAINING INERT GAS

摘要

METHOD OF PRODUCING FIBERS HAVING POROUS STRUCTURE There are disclosed improvements in the process of preparing porous fibers by wet-spinning a spinning composition containing dispersed gas, the improvements including preparation of spinning solutions satisfying specific mathematic relationships as to surface tension and viscosity thereof and as to relative volume of solution and gas as well as limiting particle size of the dispersed gas bubbles.