关键词: 甲醛光催化降解, 低温处理, 苎麻织物, 二氧化钛纳米颗粒

Abstract:

In order to solve the problem that nano photocatalytec materials have low bonding strength on textiles under adhesive-free condition, low temperature bonding treatment was adoptted to uniformly load TiO2 nanoparticles (TiO2 NPs) on ramie fabrics. The properties of the treated ramie fabrics were evaluated by a scanning electron microscope, a Fourier transform infrared spectroscope, a porosimeter, a universal tensile test machine and a formaldehyde test system. The results show that TiO2 NPs can be evenly fixed on the ramie fabrics. The sample treated in the bath at - 10°C for 3 cycles (10 min/cycle, 400 N/cm) shows the highest formaldehyde elimination rate. After the treatment, hydroxyl groups on the fabric surface are increased while the air permeability, tensile stress and elongation of the fabrics are maintained. Within 120 min, about 87.14% formaldehyde can be eliminated by the treated fabrics.

Key words: formaldehyde photocatalytic degradation, low temperature treatment, ramie fabric, titania nanoparticle