Abstract: In order to design photocatalyst fiber/cotton blended yarn in high quality, six blended yarns were produced by raising the humidity and pre-treating fibers with antistatic agent. On this basis, mechanical properties and exterior qualities were tested, and different blended ratios’ effects on yarns’ qualities were given to investigate the best blended ratio. With photocatalyst fiber content increasing, the results shows that blended yarn’s breaking strength and breaking elongation will be enhanced. Especially, once the content of photocatalyst fiber is over the critical ratio of 35%, breaking strength will be deducted while yarn elongation continues increasing and a tendency is found that yarn evenness and hairiness index alike will be decreased at first but increased gradually.

Key words: cellular photocatalyst fiber, tensile property, hairiness index, yarn evenness