Influence of the Procedure of Treatment on the Effects of Alkaline Hydrolysis of Polyester

Abstract

The possibilities of batchwise and continue alkaline treatment of polyester fabric for the obtainig of deweighting effects are investgated. Optimal effects are achieved by batchwise treatment by the addition of an appropriate wetting and dispersing auxiliary. The treatment on jigger appeared unsuitable for the practice; the effects are bad and during the alkaline treatment there are even breakings of material. More convenient is Linitest treatment. By the addition of a cation-active accelerator in the NaOH-solution, the effect of treatment increases considerably, but the strength decreases more. The dependence of the loss of mass on the NaOH-concentration in these bathes deviates from the linearity and takes the function of the potention. Certain cation-active surface-active agents which do not behave as accelerators, protect the fibre in a certain way.