抄録
The effects of some softeners upon raw silk, degummed silk and some other fibres were investigated.
1) Raw silk is much softened by the treatment with the solution of softeners, but in the case of other fibres there seems little or no softening effects on their filaments.
2) The softening effect of nonionic softeners on raw silk is small, but it is large in the cases of cationic as well as anionic softeners.
3) The filaments of viscose rayon and heat-treated PVA fibre are softened by the treatment with solution containing softeners, but the cause does not seem to lie on the softners.
4) With the exception of raw silk, the effect of softeners upon the fibres, as generally recognized, seems to be caused by the lowering of the interfibre friction.
