Development of near infrared methodology for the determination of the composition of fibre blends
The aim of the project was to examine the applicability of the NIRA method (Near Infra Red Analysis) as an alternative to the existing chemical methods, for the determination of the composition of fibre blends both for industrial and trade purposes. As a test case the analysis of Pes/cotton and wool/acrylic blends was examined. Different parameters such as the fibre characteristics, the structural differences between samples, the humidity content, the degree of (chemical) preparation and finishing operations, were introduced in the sample set and the influences upon the NIR spectra and the calibration were studied. The reference chemical composition was determined using the chemical method stated in the EEC Directive 71/307/CEE. The study has revealed that the NIR technique can be applied as a fast and moderately accurate analysis method for the determination of binary fibre blends. The technique is especially useful in applications where a high number of analyses need to be performed, such as in industry as production control or as first screening analysis of trade samples.
Bibliographic Reference: EUR 14759 EN (1992) 54 pp., MF, ECU 4
Record Number: 199211418 / Last updated on: 1994-11-29
Original language: en
Available languages: en