Analysis of alkali resistance and mechanical properties of polyester hollow staple fibers

An investigation on the feasibility of alkali scouring of polyester hollow staple fiber /natural cellulosic fiber blended fabrics studied the effects of sodium hydroxide concentration,treatment temperature and time on the hollow structure and weight loss rate of the polyester,as well as the relationship between weight loss rate and mechanical properties.The results showed that there was no visible damage in fiber hollow structure when the sodium hydroxide treatment condition was properly controlled,and the alkali resistance of the polyester can basically meet the requirement of alkali scouring process of natural cellulose fibers.The weight loss rate was significantly affected by the treatment conditions such as sodium hydroxide concentration,treatment temperature and time,especially by the temperature.Furthermore,the breaking strength gradually decreased with the increase of the weight loss rate,in particular,when the weight loss rate was more than 6%.