聚丙烯腈合成纤维是当今合成纤维中最重要的品种之一。丙烯腈在浓无机盐溶液(硫氰化钠)中可以通过光引发聚合而制备直接纺丝用的溶液,但是在一般情况下往往分子量过高,溶液粘度较大,故而对纺丝有一定困难。因此如何制备粘度较小,分子量适中的聚丙烯腈的无机盐纺丝溶液成为十分重要而引人注意的问题。除了应用各种足以降低分 Polyacrylonitrile fiber is one of the most important varieties of synthetic fibers today. Acrylonitrile Direct spinning solutions can be prepared by photoinitiation polymerization in a concentrated inorganic salt solution (sodium thiocyanide), but in general the molecular weight is often too high and the solution viscosity is high, so there is some difficulty in spinning . Therefore, how to prepare an inorganic salt spinning solution of polyacrylonitrile with a small viscosity and a moderate molecular weight has become a very important and compelling problem. In addition to applying various enough to lower the score