Crease and shrink resistant finishing of bamboo viscose fibers

For better understanding the cause which leads to the shrinking and deformation of bamboo viscose fibers,the properties of bamboo viscose fibers and their yarns were tested with two-step method.Firstly,slack alkali treatment of bamboo viscose fiber hank was performed under the conditions: mass concentration of alkali 150 g/L,treating at 30 ℃ for 2 min,followed by neutralization treatment with mass concentration of 2% H2SO4(Zn2 +,Mg2 +),treating for 5 min,thus preliminary shrink resistant effect was obtained.Secondly,resin finishing of bamboo viscose fiber fabric was carried out.The effect of the dosage of finishing agent on the crease recovery angle,shrinkage,formaldehyde content,whiteness,bursting strength,and hand feeling of knitted sweaters made of the finished bamboo viscose fiber fabric was investigated.Through analyzing experimental data and charts,the optimal finishing process was determined as follows: glutaraldehyde resin(low-temperature self-crosslinking easy-care finish) 60 g/L,catalysts 20 g/L,strong protective auxiliary 50 g/L,softener SAPAMINE HS 10 g/L。