Patent ID: 6423262
Filing Date: 2002-07-23
Classification: G01N

Abstract:
A technique for measuring one or more structural parameters or mechanical properties of polymeric fibers or for determining their dye uptake, said technique comprising the following steps:a) creating a model by applying a number of treatment steps, known from the field of chemometrics, to the measured Raman spectrum of a collection of fibrous materials having the same chemical composition as the fibers to be examined, of which the dye uptake, the mechanical or structural properties, and the Raman spectrum are known, b) measuring a Raman spectrum of the fibers to be examined by irradiating the fibers with high-intensity monochromatic light, capturing the scattered light, and passing it to a light-sensitive sensor, c) treating the measured spectrum obtained in step b), and d) applying the model obtained via step a) to the treated spectrum obtained in step c) in order to determine a value of the respective structural parameters or mechanical properties of the fibers to be examined, or to determine their dye uptake.