Abstract
The effects of ripening degree of viscose, conc. of acid, (NH4)2SO4, ZnSO4 etc. in coag. bath, on the surface structure of regenerated viscose films were observed using an electron microscope. The smoothness or coarseness of surface of films are not only effected by the conc. of acid and salts in coag. bath, but the stability of xanthate. For instance, when the coag. bath of high ZnSO4 content is used, a stable zinc xanthate film is formed and the surface of regenearated film becomes very coarse, owing to delayed decomposition.
