纳米功能性纺织品表面颗粒物的迁移性

Migration of particulate matters on nano-functional textiles

选取分别经纳米氧化锌和纳米二氧化钛整理的纺织品为研究对象,通过扫描电镜及元素分析观测纤维表面纳米材料的存在和形貌,利用激光粒度分析仪及电感耦合等离子体质谱仪分析模拟条件下的浸出液,探讨是否存在因汗渍、水浸引起纳米颗粒物的脱落,以及在迁移过程中纳米颗粒物粒径的变化。实验结果表明:织物纤维表面分散分布着不规则的颗粒物,粒径从纳米级到微米级,由元素分析可知观察到的颗粒物分别是ZnO和TiO2;汗渍或水浸可以导致纳米材料的脱落和溶解,但浸提液中的颗粒物粒径在微米级。

To investigate the migration of nano-finished textiles during dressing,the functional fabrics finished with nano ZnO and nano TiO2 were selected,the morphologies and elements of the fibers were observed by scanning electron microscope（SEM） and energy dispersive spectrum（EDS）,laser grain size analyzer and inductively coupled plasma-mass spectrometry（ICP-MS）were applied to the identification of the extract solutions at synthetic perspiration /water washing.The results showed that irregular particles dispersed on the surface of fabrics,range from nm to μm,EDS showed they were ZnO and TiO2;synthetic perspiration /water washing could lead to the detachment and dissolution of nano ZnO and nano TiO2,but the particle sizes in extract solutions were μm.