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Research Project: Improved Quality Assessments of Cotton from Fiber to Final Products

Location: Cotton Structure and Quality Research

Title: Laboratory and outside the laboratory measurements of ginned and ot ginned cotton for fiber micronaire and maturity by portable Near Infrared (NIR) Instruments

Author
item Rodgers Iii, James
item Zumba, Jimmy - Oak Ridge Institute For Science And Education (ORISE)

Submitted to: Proceedings Of The American Association Of Textile Chemists And Colorists
Publication Type: Proceedings
Publication Acceptance Date: 2/22/2016
Publication Date: 4/21/2016
Citation: Rodgers III, J.E., Zumba, J. 2016. Laboratory and outside the laboratory measurements of ginned and ot ginned cotton for fiber micronaire and maturity by portable Near Infrared (NIR) Instruments. Proceedings Of The American Association Of Textile Chemists And Colorists. p.1-6.

Interpretive Summary: Micronaire is a key cotton quality assessment property, impacting downstream fiber processing and dye consistency. A component of micronaire is fiber maturity (degree of secondary wall development). Historically, micronaire and maturity are measured in a laboratory under tight environmental conditions. Interest was expressed in measurements that can be performed both in the laboratory and outside the laboratory (field, greenhouse, etc.). With portable Near Infrared (NIR) instruments, micronaire and maturity measurements were made on seed cotton (measured directly on the cotton boll) and ginned cotton lint. NIR results yielded acceptable, but biased, method agreement to reference maturity values for over 200 samples from 3 varieties, but distinct deviations due to variety effects were observed for micronaire. Chemometric models were developed that improved NIR predictability for micronaire and maturity and which minimized the impact of variety on the results.

Technical Abstract: Micronaire is a key cotton quality assessment property, impacting downstream fiber processing and dye consistency. A component of micronaire is fiber maturity (degree of secondary wall development). Historically, micronaire and maturity are measured in a laboratory under tight environmental conditions. Interest was expressed in measurements that can be performed both in the laboratory and outside the laboratory (field, greenhouse, etc.). With portable Near Infrared (NIR) instruments, micronaire and maturity measurements were made on seed cotton (measured directly on the cotton boll) and ginned cotton lint. NIR results yielded acceptable, but biased, method agreement to reference maturity values for over 200 samples from 3 varieties, but distinct deviations due to variety effects were observed for micronaire. Chemometric models were developed that improved NIR predictability for micronaire and maturity and which minimized the impact of variety on the results.