Fast detection of cotton content in cotton/polyester fabrics by near-infrared spectroscopy technology

To speed up the analysis of textile fibers and strengthen the quality control of textile manufacture,249 cotton/polyester fabrics were taken as research objects.The near-infrared quantitative correction model was established by partial least squares(PLS)method.To get better results,samples were divided into four groups that were 0%-30%,30%-60%,60%-80% and 80%-100% according to the cotton content.Four quantitative models corresponding to the four groups were developed.To verify the models,cotton content prediction of 1 000 samples was conducted.The variance analysis of the predicted results show that there was no significant difference between NIR method and national standard method(GB/T 2910.11—2009).On this basis,a standard operation procedure(SOP) for fast detection of contents of textile raw material by near-infrared pre-screening method was prepared,and it has been proven to have good effect by practical applications.