Chemistry of the Bleaching of Cotton Cloth

Hebden, John C.

doi:10.1021/ie50069a004

Cited by 9 publications

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“…The more intensive coloration of the unbleached cottons than of the bleached cotton (column 7, Table II) seems a consequence of hydrothermal decomposition of a diethyl ether-soluble [38,71], nitrogenous [20,31,39,38], pectic [20,61], or other organic compound [10], perhaps as some hygroscopic component aided the invasion of the film by the polar fluid. Probably the bleached cotton was not as free of proteins, chloroamines [37,55], or plant residues often present in cotton linters even after oxidative bleaching [51] as was a purified cotton that did not darken under 150 0 [7].…”

Section: Reversion Of Brightnessmentioning

confidence: 99%

Change in Cotton, Linen, Rayon, and Cellulose Secondary Acetate with Temperature of Steaming

Ester¹,

Gerber

Edgar³

1963

Textile Research Journal

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Reaction of woven cotton, linen, rayon, and cellulose secondary acetate with steam at three temperatures from 1152°to 153.0°is measured, after rinsing of cloth in water as amount of change in brightness, reducing action, weight, and wet strength of each polar polymer and change in acetyl of the cellulose secondary acetate. The trends of interdependence among the~e changes and the linearity of the relationship between logarithm of change and~eclpro~l of absolute temperature are compared as slopes.Apparent energies of mteractlOn are evaluated as parameters of the Arrhenius and Eyring equations for temperature dependence of rate of reaction under the assumption that increment in copper(II) reduced to copper (1) by residual fiber and decrement in acetyl of the cellulose seconda~y acetate were each directly proportionate to rate of reversible reaction. The lo~anthm of the pre-exponential parameter is shown to increase linearly with ArrhenIUS energy of activation as change in entropy increases linearly with change in enthalpy accompanying depolymerization of the bleached linen bleached cotton, rayon, and desized unbleached cotton.

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