Author
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Gamble, Gary |
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Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Proceedings Publication Acceptance Date: 1/5/2004 Publication Date: 6/1/2004 Citation: Gamble, G. R. 2004. The relationship between fiber maturity and moisture content. Proceedings of the Beltwide Cotton Conference, Cotton Quality Measurements Conference,January 5-9, 2004, San Antonio, TX, p. 2327-2330. Interpretive Summary: COMPARISON OF COTTON FIBER MOISTURE CONTENT WITH FIBER MATURITY INDICATES THAT MORE MATURE COTTONS HAVE LOWER MOISTURE VALUES THAN LESS MATURE ONES. THIS SUGGESTS THAT THE CELLULOSE OF MATURE COTTON IS IN A MORE ORDERED STATE, WITH FEWER SITES AVAILABLE FOR WATER TO ATTACH TO IT, THAN THE CELLULOSE OF IMMATURE COTTONS. THE DEGREE OF CELLULOSE ORDER WAS DETERMINED FOR A SET OF COTTONS OF VARYING MATURITY BY INFRARED SPECTROSCOPY. THE RESULTS INDICATED NO DIFFERENCE BETWEEN COTTONS EXHIBITING DIFFERENT MOISTURE CONTENTS, POSSIBLY DUE TO THE RELATIVE INSENSITIVITY OF THE METHOD. Technical Abstract: MOISTURE AND MICRONAIRE MEASUREMENTS WERE PERFORMED ON 21 COTTON SAMPLES EXHIBITING A RANGE IN GENETIC DIVERSITY AND GROWING LOCATIONS. A COMPARISON OF THESE RESULTS INDICATES THAT MOISTURE CONTENT INCREASES AS A FUNCTION OF DECREASING MICRONAIRE, SUGGESTING A CONCOMITANT DECREASE IN CELLULOSE CRYSTALLINITY. DETERMINATION OF CRYSTALLINITY INDICES BY FTIR SPECTROSCOPY PROVED UNABLE TO DISTINGUISH BETWEEN THE UPPER AND LOWER LIMIT MOISTURE SAMPLES DUE TO THE RELATIVE INSENSITIVITY OF THE METHOD. |
