Effect of deep eutectic solvent on hydrophilic modified polyamide fiber by protease method
Aiming at the problem of poor hydrophilicity of polyamide fabric,the surface of poly-amide fabric was modified by commercial bromelain.The UV absorbance test and static contact angle test of the reaction residue were carried out by single factor variable test to determine the proper process conditions of bromelain treatment of polyamide fabric:bromelain dosage 32 mg/mL,pH 6.0,temperature 50 ℃,reaction time 18 h.On the basis of fit conditions,the hydrolysis effect of deep eutectic solvent assisted activating bromelain on polyamide fabric was tested and analyzed.It was found that the deep eutectic solvent has etching effect on polyamide fiber,and the surface roughness increased.After the hydrophilic transformation of the fabric surface by bromelain,the hydrophilic effect of the whole fabric surface is enhanced,and the contact angle is reduced by 36.7％.
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