纳米TiO2光催化/生物酶法羊毛表面改性及其染色性能

为改善羊毛纤维的防毡缩能力和染色性能,对羊毛表面进行改性。将纳米TiO2附着在羊毛表面,置放于紫外光下照射,而后结合生物酶处理对羊毛表面改性。结果表明,当附着有纳米TiO2的羊毛经过紫外光照并经生物酶后处理,羊毛表面不再产生Allworden反应囊泡,扫描电子显微镜观察到羊毛表面鳞片层已有明显的腐蚀现象;缩绒性实验证明上述改性处理后的羊毛毡缩性降低,改性羊毛的上染速率及上染率具有明显的提高,同时纳米TiO2附着使羊毛经过紫外光照射处理后的白度降低程度减少。

Surface Modification and Dyeing Properties of Wool with Photocatalysis of Nano TiO2/Biological Enzyme Method

In order to enhance shrinkage resistance capacity and dyeing property of wool fiber,modification of wool surface is needed.The nano-TiO2 was adhered to the surface of the wool and exposed to ultraviolet light.Then wool surface modification was conducted in combination of biological enzyme treatment.The results show that,after the wool adhered to nano-TiO2 goes through UV irradiation and treatment with enzyme,there was no Allwrden reaction vesicle on wool.It is observed through SEM that the scale layer on wool surface has corrosion phenomenon.The felting experiment proves the shrinkage resistance capacity of modified wool declines.In addition,the dyeing speed and dye-uptake rate of modified wool greatly improve.The adherence of nano-TiO2 on wool surface helps to decrease whiteness reduction degree of the wool after UV irradiation exposure.