Effect of heat setting on dimensional stability and dyeing properties of polyflactic acid) fibres

摘要

A study has been conducted into the effect of heat setting on the dimensional stability and dyeing properties of spun and false-twist texturised po!y(lactic acid) yarn. It has been shown that acceptable levels of dimensional stability can be achieved after heat setting for 30-45 s at 130℃, false-twist texturised yarn exhibiting greater shrinkage than spun yarn. The exhaustion level and visual colour yield of a number of disperse dyes have been evaluated on each type of poly(lactic acid) yarn and shown to be essentially independent of the time of heat setting.