Important Aspects of Cotton Colour Measurement
Research and development
Authors:
- Matusiak Małgorzata
Textile Research Institute, Łódź, Poland - Walawska Anetta (j/w)
 Full text | Abstract: Colour is the basic criterion of cotton classification into cotton grade according to the Universal Cotton Standards. It also reflects the quality of other non-U.S. grown cotton. For years the quality of cotton has been assessed in an organoleptic way by cotton classers. Today there are plans to replace subjective visual grading by objective instrumental measurement. The colour grade of cotton is determined by the degree of reflectance (Rd) and the yellowness (+b), which are measured instrumentally using an High Volume Instrument (HVI). Some efforts undertaken have aimed at application of a spectrophotometer for cotton color measurement. The aim of this work was to investigate some of the problems of cotton color measurement. A comparison of the classer and HVI color grading was carried out for 32 cotton samples of non-U.S. origin. HVI measurement was performed using two HVI 900 systems. Agreement between the classer and HVI grading was not high, nevertheless it was comparable with that reported in literature, between the classer and HVI grading for U.S. cotton. Next cotton color measurement was conducted by means of an HVI 900 and a Datacolor 650 spectrophotometer. The results confirmed a strong correlation between the (Rd) from the HVI and the CIE L* from the spectrophotometer. |
Tags: cotton fibres, color assessment, spectrophotometer, high volume instrument.
Citation: Matusiak M., Walawska A.; Important Aspects of Cotton Colour Measurement. FIBRES & TEXTILES in Eastern Europe 2010, Vol. 18, No. 3 (80) pp. 17-23.