Sorption of Water Vapor by Keratin

Watt, I. C.

doi:10.1080/00222358008081042

Cited by 36 publications

(26 citation statements)

References 176 publications

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“…The water is believed to be associated with specific chemical groups in the amorphous regions, with polar side groups and peptide groups of the protein chains considered to be the most important (51). Debate continues, however, on the exact location of this water, its state, and the mechanism by which it enters the fiber (52-54).…”

Section: Water Sorptionmentioning

confidence: 96%

Wool: Structure, Properties, and Processing

Rippon

Christoe

Denning

et al. 2016

Encyclopedia of Polymer Science and Technology

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Wool, the fibrous coating from sheep, is the most important animal fiber used by the textile industry. It has been used continuously for several thousand years, the earliest type of fabric made from wool probably being a felt. Although the relative importance of wool as a textile fiber has declined with the increasing use of synthetic fibers, it remains important in some sectors of the market. This article discusses raw wool specification, fiber growth, its complex morphological and chemical structure, and the physical properties that make wool unique among textile fibers. Also discussed are the processing steps used to transform raw wool into consumer products, namely, scouring, carbonizing, carding, spinning, setting, dyeing, bleaching, printing, and treatments to reduce felting shrinkage, insect damage, and flammability. A novel textile fiber made from wool (Optim TM , CSIRO) is also described.

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Section: Water Sorptionmentioning

confidence: 96%

Wool: Structure, Properties, and Processing

Rippon

Christoe

Denning

et al. 2016

Encyclopedia of Polymer Science and Technology

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“…The form of Equation 14 requires five parameters, as is generally considered necessary for good fits to experimental isotherms [28]. The parameter c relates to the initial slopc of the isotherm, v,, to the position of the first turnover point, ti to the slope in the middle part, a to the position of the second turnover point, andp to the slopc in the last part ofthe isotherm.…”

Section: Proposed Equation Formentioning

confidence: 99%

“…The main criticism of the B.E.T. equation is the serious discrepancy between experimental and predicted isotherms at high adsorbate concentration [28]. Many equations have been proposed [2, 5,6,8,9,10,25,30,32): some of them fit the expcrimcntal isotherm more closely, but most arc complex in form and introduce parameters that in many cases lack physical interpretation.…”

mentioning

confidence: 99%

Multilayer Adsorption of Moisture in Wool and its Application in Fabric Steaming

1992

Textile Research Journal

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Multilayer adsorption theory is used to derive an equation that accurately fits the experimental isotherms for the whole range ofadsorbate concentration. The parameters uscd in the proposcd isotherm equation relate to the size and fraction of capillaries and pores in the adsorbent material. A relationship between the change in the quantity ofadsorbed molecules and temperature is derived for any adsorbent material in which the sizes of capillaries and pores do not change with temperature. This equation, when combined with the isotherm equation, produces a family of isotherms at varying temperatures, and the isostcres for changes in regain with temperature at constant humidity. From the absorption behavior of wool at high temperature, the steady-state condition during steaming of wool can be predicted. For the conditions that prevail in pressure decatizing, fabric with initial regains in the range of 13-18% will take the least time to reach equilibrium.Steaming and pressure dccatizing subject wool fibers

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“…Sorption follows with relative humidity a sigmoid curve that is characteristic of a large and very diverse variety of materials. [1][2][3] The most authoritative and comprehensive review of the sorption properties of wool was provided by Watt. 1 Historically, the continuous description of sorption isotherms has been approached by two main types of models: The oldest approach relates to the well-known theory of Brunauer, Emmett, and Teller (BET theory).…”

Section: Introductionmentioning

confidence: 99%