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United States Department of Agriculture

Agricultural Research Service

Title: Fias Fiber Maturity Measurement Based on Ribbon Width and Fiber Density

Authors
item Bel, Patricia
item Xu, B - UNIVERSTIY OF TEXAS AUSTI
item Thibodeaux, Devron
item Schexnayder, Mia

Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Proceedings
Publication Acceptance Date: January 20, 2008
Publication Date: March 30, 2008
Citation: Bel, P., Xu, B., Thibodeaux, D.P., Schexnayder, M.T. 2008. FIAS fiber maturity measurement based on ribbon width and Fiber Density. National Cotton Council Beltwide Cotton Conference. CD-ROM., p1314-1327.

Interpretive Summary: FIAS (Fiber Image Analysis System) was developed as a relatively high-speed method of measuring fiber maturity looking at ribbon width instead of the much slower method of making, cutting and analyzing cross-sections. An uncombed cotton sample is chopped and sprayed on a slide and then measured under the microscope using image analysis. The highly transmissive sections are detected by the system as “dead” fiber. These dead fibers become the dye defects known as white speck neps in finished fabrics. This work compares maturity measurements from bale fiber samples to the level of white specks on dyed fabrics. Five representative cotton from the 21 US cottons from the 2001 crop year study have a wide range of white speck neps in the fabric. They were processed identically in the mill through dyeing. We report here preliminary FIAS maturity data on these cottons and compare them to cross-section maturity data and white speck levels determined by image analysis.

Technical Abstract: Fineness and maturity parameters of cotton fibers are often derived from measurements of cotton fiber cross-sections. Currently, image analysis is used to measure cross sectional properties of cotton fibers such as total area, cellulose area, lumen area, fiber perimeter, lumen perimeter, circularity and calculated micronaire. Procedures for analysis include preparing a bundle of parallel fibers by carefully combing the representative tuft taken from the large sample, imbedding the fibers, followed by thin sectioning and then image analysis of the cross sections. Combing is known to remove neps. Most neps are composed of highly immature or “dead” fiber and because of combing, the cross section data may not include the maturity of those fibers and past studies have shown poor correlation to the level of white specks (undyed fiber neps) in dyed fabrics. FIAS (Fiber Image Analysis System) was developed as a relatively high-speed method of measuring fiber maturity looking at ribbon width instead of the much slower method of making, cutting and analyzing cross-sections. An uncombed cotton sample is chopped and sprayed on a slide and then measured under the microscope using image analysis. The highly transmissive sections are detected by the system as “dead” fiber. These dead fibers become the dye defects known as white speck neps in finished fabrics. This work compares maturity measurements from bale fiber samples to the level of white specks on dyed fabrics. The 21 US cottons from the 2001 crop year have a wide range of white speck neps in the fabric. They were processed identically in the mill through dyeing. We report here preliminary FIAS maturity data on these cottons and compare them to cross-section maturity data and white speck levels determined by image analysis.

Last Modified: 7/28/2014
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