Photocatalytic self-cleaning performance of modified TiO2/CMCS/SA hybrid fibers
The modified titanium dioxide(TiO2)particles with core-shell shape were prepared by coating chitosan(CS)on the surface of TiO2,and a type of textile material with self-cleaning performance was prepared by introducing core-shell particles into carboxymethyl chitosan(CMCS)/sodium alginate(SA)hybrid fiber through wet spinning method.The hybrid fibers were characterized by UV-Vis spectrophotometer,scanning electron microscope,infrared spectrometer and single fiber strength meter.The results showed that the modified TiO2/CMCS/SA hybrid fibers exhibited excellent photo-catalytic and mechanical properties after introduction of core-shell particles.When the content of core-shell particles in the hybrid fibers was 0.3％,the fracture strength of the modified TiO2/CMCS/SA hybrid fibers was highest to 3.56 cN/dtex and their photo-catalytic efficiency was up to 80％.Compared with CMCS/SA hybrid fibers,the fracture strength and photo-catalytic efficiency was increased by 16.34％and 20％,respectively.
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