Cross-Sectional Parameters of Cotton Fibers

Hébert, J.; Boylston, E. K.; Wadsworth, J. I.

doi:10.1177/004051757904900910

Cited by 21 publications

(9 citation statements)

References 6 publications

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“…Mercerization converts the crystal structure of cellulose I to cellulose II and reverses the cellulose chain packing polarity from parallel to antiparallel which is a structural hallmark of this process (Nevell and Zeronian 1985;Wertz et al 2011). Previous studies (Tripp et al 1954;Rollins 1954;Hebert et al 1979) have shown that upon mercerization with caustic soda cotton fiber length shrinks and the diameter increases. In addition the cross section of the fiber becomes more circular.…”

Section: Resultsmentioning

confidence: 99%

Immobilization of lysozyme-cellulose amide-linked conjugates on cellulose I and II cotton nanocrystalline preparations

et al. 2011

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Lysozyme was attached through an amide linkage between some of the protein's aspartate and glutamate residues to amino-glycine-cellulose, which was prepared by esterification of glycine to preparations of cotton nanocrystals. The nanocrystalline preparations were produced through acid hydrolysis and mechanical breakage of the cotton fibers from a scoured and bleached cotton fabric and a scoured and bleached, mercerized fabric, which was shown to produce cellulose I (NCI) and cellulose II (NCII) crystals respectively. A carbodiimide-activation coupling reaction was used to create the lysozyme-aminoglycine-cellulose conjugates using both NCI and NCII in a polar solvent and gave yields of covalently linked lysozyme at 604 mg/gram of cotton nanocrystal. The incorporation of lysozyme conjugated to the NCI and NCII preparations gave very high activity (1,500 U/mg cotton) when assessed using a fluorescence tag assay to measure antimicrobial activity against Micrococcus lysodeikticus. Scanning electron micrographs demonstrated an aggregation of nanoparticles corresponding to lysozyme bound on the surface of larger cotton nanocrystalline sheets. The approach of producing high enzyme activity on cotton nanocrystals is discussed in the context of selectively presenting robust hydrolase activity on nanocrystalline surfaces.

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Section: Resultsmentioning

confidence: 99%

Immobilization of lysozyme-cellulose amide-linked conjugates on cellulose I and II cotton nanocrystalline preparations

et al. 2011

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“…Several cotton cultivars representing approximately one half of the American cotton crop and offering a wide range in fiber perimeter were grown under identical environmental conditions [9]. The samples were field dried, hand harvested, and of similar maturity.…”

Section: Methodsmentioning

confidence: 99%

“…Fiber perimeter measurements followed the technique published previously [9]. All nep counts were compared with the results of the one gram test in an attempt to predict potential neppiness.…”

Section: Methodsmentioning

confidence: 99%

Neps in Cotton Processing

Hébert

Mangialardi

Ramey

1986

Textile Research Journal

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A test requiring only one gram of raw stock has been developed for estimating nepping potential. The test has been applied to follow nep formation within three cotton cultivars during processing. Variables include two picking dates (maturity) and lint cleaning or no lint cleaning following saw ginning. All samples were drafted, spun, and knitted. Fabrics were dyed and nep counts determined and compared with predicted neppiness. Possible causes of neps are discussed.

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“…Berlin et al (1981), Hebert et al (1979), thibodeaux and evans (1986), Xu et al (1993), Schneider and retting (1999), and many other researchers have worked on identifying and measuring different characteristics of fibre cross-sections. There are different approaches to analysing the cross-section of fibres.…”

Section: Fibre Classification By Cross-sectionmentioning

confidence: 99%