Profile and Volume of Never Dried Cotton Fibers

Peeters, M.‐C.; Langhe, I. De; Langhe, Edmond De

doi:10.1177/004051758605601102

Cited by 3 publications

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“…[1][2][3][29][30][31] It has been complicated further as a result of direct and indidiffractograms were recorded on Siemens D-500 X-ray diffractometer using copper K a radiation in rect comparisons of data on cellulosic materials of different origins. 1 -3,32 In recent communicaconjunction with scintillation counter as detector and graphite monochromator in the diffracted tions, 31,33,34 it has been concluded that the mass density of cellulose in never-dried cotton, the debeam direction. The experimental conditions for recording X-ray diffractograms from all cotton culgree of polymerization, the nature and size of crystallographic units, or the supramolecular crystaltivars were uniformly kept constant as follows.…”

Section: Introductionmentioning

confidence: 99%

Cellulose crystallite sizes in diploid and tetraploid native cotton

Moharir

Kiekens

1998

J. Appl. Polym. Sci.

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Cellulose crystallite sizes in directions perpendicular to (101), (101 V ), and (002) planes, have been estimated from X-ray powder diffraction patterns. The diffraction peaks were resolved using the FIT X-ray diffraction data analysis program (written by SOCABIM, Siemens DIFFRAC AT Software System, Siemens, Germany). The complete data for all the three equatorial planes was analyzed for 2u, d values, full width at half-maximum (FWHM), and the normalized area under the three diffraction peaks, for seven cotton cultivars grown at four different locations in India in different crop years. The mean crystallite sizes were determined using the Scherrer equation. The reference standard included degummed and purified ramie fibers for relative crystallinity estimation in cotton cultivars. It has been observed that, though the computed crystallite sizes corresponding to (101), (101 V ), and (002) planes vary within individual varieties with location and year of growth, the combined average crystallite size corresponding to (101) and (101 V ) planes taken together for individual varieties from all locations and crop years is close to the combined average crystallite size corresponding to the (002) planes, irrespective of the species of cotton. The values of the average relative crystallinity with respect to highly oriented degummed and purified ramie fibers of individual varieties from all locations and crop years do not significantly vary between varieties and species of cotton. It is visualized that variations in crystallite sizes arise as a result of the differences in the amount of cellulose synthesized within fibers of individual varieties and their disposition within the matrix of their developing fibers.

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Section: Introductionmentioning

confidence: 99%

Cellulose crystallite sizes in diploid and tetraploid native cotton

Moharir

Kiekens

1998

J. Appl. Polym. Sci.

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Nucleolar size at early stages of cotton fiber development in relation to final fiber dimension

Peeters

Voets

Dayatilake

et al. 1987

Physiologia Plantarum

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Voets, S., Dayatilake, G. and De Langhe, E. 1987. Nucleolar size at early stages of cotton fiber development in relation to final fiber dimension. -Physiol. Plant. 71: 436-440.Changes in nucleolar size and nucleolar vacuolation at early stages of fiber development and final fiber dimensions were determined for cotton of different species: Gossypium hirsutum L. cv. B49, Gossypium barbadense L. cv. Menoufi and Gossypiton arboreum L. cv. Vimar. Size of the nucleoius in combination with its vacuolation at an early stage of development was found to be clearly associated with the final result of fiber development.

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Cellulose Packing Density in the Secondary Wall of Never Dried Cotton Fibers

Peeters

Langhe

1986

Textile Research Journal

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This quantitative study of the cellulose content of secondary walls of never dried cotton fibers uses a technique based on colorimetry. The study reveals that the density of cellulose, i.e., the mass of cellulose per volume of secondary wall, is identical for all never dried cotton fibers and independent of the genotype. Various plant growth conditions do not influence this cellulose density. For samples of never dried fibers with a given mean length, the mean secondary wall thickness is an accurate indicator of the amount of cellulose produced in these fibers.

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Profile and Volume of Never Dried Cotton Fibers

Cited by 3 publications

References 1 publication

Cellulose crystallite sizes in diploid and tetraploid native cotton

Cellulose crystallite sizes in diploid and tetraploid native cotton

Nucleolar size at early stages of cotton fiber development in relation to final fiber dimension

Cellulose Packing Density in the Secondary Wall of Never Dried Cotton Fibers

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