Physical Modification of Polypropylene - Preparation of Disperse dyeable Fibers -

Polypropylene fibers are difficult to dye by conventional dyeing techniques due either to lack of dye receptor sites in their molecular structure to with the dye molecules may become attached, or to difficult of penetration of certain types of dye molecules into the structure$^1$. Although the diffusion coefficient of disperse dyes into polypropylene is quite high, the saturation values are very low.(omitted)