Solvent Absorption in Fiber Assembly

The Penetration of solvent into fiber assemblies was investigated . The relationship between the quantity of solvent penetrated by capillarity and the elapsed time was obtained on various kinds of fiber and on different degrees of porosity (degrees of opening) of fiber assemblies . The kinds of fiber were Rayon, Nylon, Polyester, Acrylic and Wool. The degrees of porosity of fiber assembly were 70, 80, 90, 95 and 97%. The solvent was Tetrachloroethylene . All measurements were made in saturated solvent vapour. For the purpose of comparison, distilled water was used by the same method. No remarkable difference in the amount of penetrated solvent was observed between various kind of fibers. But the amount of penetrated distilled water varied greatly with the kind of fiber in the case of the same degree of porosity. And the amount of penetrated solvent was in inverse proportion to the degrees of porosity.