G - Physics – 01 – N
Patent
G - Physics
01
N
G01N 21/65 (2006.01) G01N 21/89 (2006.01) G01N 33/36 (2006.01)
Patent
CA 2362102
The invention pertains to a process for determining the dye uptake of polyethylene terephthalate fibres in which the fibres are irradiated with high- intensity monochromatic light. A light-sensitive sensor is used to measure the Raman scattering and compare it with that of an earlier established model on the basis of Raman spectra of polyethylene terephthalate fibres of known composition and structure. A model is used to calculate the density, which constitutes a quantitative measure of the dye uptake. In the calculation use is made of measurement points from a number of regions in the spectral measuring region of 598 to 1900 cm-1.
L'invention concerne un procédé permettant de déterminer l'absorption de colorant de fibres de térephtalate de polyéthylène, selon lequel les fibres sont soumises à l'action d'une lumière monochrome de forte intensité. Un détecteur photosensible est utilisé pour mesurer la diffusion de Raman et la comparer à celle d'un modèle établi antérieurement sur la base de spectres de fibres de térephtalate de polyéthylène de Raman, de composition et de structure connues. On utilise un modèle pour calculer la masse volumique, qui constitue une mesure quantitative de l'absorption de colorant. Dans le calcul, on utilise des points de mesure provenant d'un nombre de régions situées dans la zone de mesure spectrale allant de 598 à 1900 cm?-1¿.
de Weijer Anton Peter
Swieringa Erik
Van Wijk Robert Jan
Acordis Industrial Fibers Gmbh
Enka Tecnica Gmbh
Ogilvy Renault Llp/s.e.n.c.r.l.,s.r.l.
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