改性TiO_(2)/CMCS/SA杂化纤维的光催化自清洁性能  

Photocatalytic self-cleaning performance of modified TiO_(2)/CMCS/SA hybrid fibers

作　　者：孙胜南 程晨 暴达 贾尚印 周永春 张森 SUN Shengnan;CHENG Chen;BAO Da;JIA Shangyin;ZHOU Yongchun;ZHANG Sen(School of Textile and Material Engineering,Dalian Polytechnic University,Dalian 116034,China)

机构地区：[1]大连工业大学纺织与材料工程学院,辽宁大连116034

出　　处：《大连工业大学学报》2024年第5期325-329,共5页Journal of Dalian Polytechnic University

基　　金：辽宁省教育厅科学研究经费项目(J2020047).

摘　　要：将壳聚糖(CS)包覆在二氧化钛(TiO_(2))表面上制备了改性TiO_(2)核壳粒子,并利用湿法纺丝技术将核壳粒子引入羧甲基壳聚糖(CMCS)/海藻酸钠(SA)杂化纤维中,制备了具有自清洁功能的纺织材料。紫外-可见分光光度计、扫描电子显微镜、红外光谱仪和单纤强力仪对杂化纤维表征结果表明,引入核壳粒子的改性TiO_(2)/CMCS/SA杂化纤维具有较好的光催化性能和力学性能;当核壳粒子在杂化纤维中的质量分数为0.3%时,改性TiO_(2)/CMCS/SA杂化纤维的断裂强度最高达到3.56cN/dtex,光催化效率达到80%;与CMCS/SA杂化纤维相比,断裂强度提高了16.34%,光催化效率提高了20%。The modified titanium dioxide (TiO_(2)) particles with core-shell shape were prepared by coating chitosan (CS) on the surface of TiO_(2), 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 TiO_(2)/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 TiO_(2)/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.

关 键 词：二氧化钛 核壳粒子 湿法纺丝 海藻酸钠 自清洁 

分 类 号：TQ342.8[化学工程—化纤工业]