In order to improve the wettability of polyester fabric, the fabric was modified by ultraviolet irradiationano-TiO2. The results showed that the super-hydrophobicity of polyester fabrics was quickly transformed into highly hydrophilic fabrics via UV irradiationano-TiO2. At the concentration 40g/L of nano-TiO2 and UV irradiation 60min, the water contact angle of the super-hydrophobicity of polyester fabrics could decrease to zero in 4. 11 seconds. The result of SEM testified that the surface of polyester fiber was rough and had other materials; reflection ultraviolet spectrum excluded the possibility that the nano-TiO2 adhered to the polyester fiber; infrared spectrum suggested the surface of polyester fiber was oxidized by air oxygen; X-ray diffraction showed that the crystallinity of polyester fabrics decreased a little; and DSC showed that the thermal stability of the polyester fabric increased. The whiteness and rigidity of modified polyester fabrics kept well, with resilience increased a little.%为提高涤纶织物的亲水性,研究了紫外线-纳米二氧化钛改性涤纶织物的方法.结果表明:在纳米二氧化钛质量浓度为40 g/L,紫外线照射60 min时,超疏水涤纶织物能够在4.11s内水接触角变为0°,成为高亲水性织物.扫描电镜(SEM)显示涤纶表面粗糙,附着了其他物质.反射紫外光谱排除是纳米二氧化钛在涤纶上吸附所致的可能性.红外光谱分析表明,涤纶表面的物质是氧化所致；X-射线衍射分析表明,改性涤纶的结晶度有所下降；差示扫描量热(DSC)分析表明,改性涤纶的热稳定性略有提高.改性后的涤纶织物白度、硬挺度保持良好,折皱弹性有所提高.
展开▼
