Experimental Investigation of the Influence of Structural Parameters on the Radiative Transmittance of Goose-Down Polyester Nonwovens for Cold Weather Clothing 


Vol. 25,  No. 10, pp. 4033-4044, Oct.  2024
10.1007/s12221-024-00709-y


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  Abstract

The lower efective thermal conductivity of goose down fbres provides an excellent thermal insulator property, which is mainly assumed due to its air-entrapping ability and thus lower difusive thermal conductivity. Although the efective ther mal conductivity of a porous medium is a combination of both difuse and radiative thermal conductivity, using an alternate approach, the present work attempted to quantify the infuence of structural parameters on radiative transmittance, which is directly related to radiative conductivity that afect the overall efective thermal conductivity. A Box–Behnken design was used to study the efect of areal density, thickness of nonwovens, and blend proportion of the goose down fbres in non-wovens on the radiative transmittance. It was found that radiative transmittance does not decrease linearly with an increase in areal density. Also, the model predicted an interaction factor among the thickness of the nonwoven and the blend proportion of the goose down fbers; with an increase in thickness, radiative transmittance showed a decreasing trend; with an increase in goose down blend proportion, radiative transmittance decreased, but the extent of reduction was diferent for diferent levels of thickness. So, it was found that the multidirectional orientation of goose down fbres along with their fne barbules are the major factors that contributed to their lower radiative transmittance properties.

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  Cite this article

[IEEE Style]

R. Rengasamy, G. Mishra, R. Kumari, V. Baheti, R. S. Rengasamy, "Experimental Investigation of the Influence of Structural Parameters on the Radiative Transmittance of Goose-Down Polyester Nonwovens for Cold Weather Clothing," Fibers and Polymers, vol. 25, no. 10, pp. 4033-4044, 2024. DOI: 10.1007/s12221-024-00709-y.

[ACM Style]

R. Rengasamy, Gourav Mishra, Ranjna Kumari, Vijay Baheti, and R. S. Rengasamy. 2024. Experimental Investigation of the Influence of Structural Parameters on the Radiative Transmittance of Goose-Down Polyester Nonwovens for Cold Weather Clothing. Fibers and Polymers, 25, 10, (2024), 4033-4044. DOI: 10.1007/s12221-024-00709-y.

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pISSN : 1229 - 9197
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