Measuring the Contact Angles of Liquid Droplets on Wool Fibers and Determining Surface Energy Components

Le, Cuong; Ly, N.G.; Stevens, Michael G.

doi:10.1177/004051759606600606

Cited by 33 publications

(20 citation statements)

References 26 publications

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“…Unduloid droplets always have zero contact angles while clamshell droplets form contact angles above 60°. Contact angles of various liquids on wool fibers are measured using the liquid droplet method of Le et al [56]. A computational technique greatly simplifies contact angle calculations.…”

Section: Methods Based On Goniometrymentioning

confidence: 99%

Wetting and Wicking in Fibrous Materials

Patnaik¹,

Rengasamy²,

Kothari³

et al. 2006

Textile Progress

195

143

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Section: Methods Based On Goniometrymentioning

confidence: 99%

Wetting and Wicking in Fibrous Materials

Patnaik¹,

Rengasamy²,

Kothari³

et al. 2006

Textile Progress

195

143

View full text Add to dashboard Cite

“…The main differences in these measurement results lie in the diffèrent probe liquids and their properties. An apolar liquid with higher surface energy leads to a higher value for the dispersion component, and a polar liquid with high energy leads to a higher value ofthe polar component [25].…”

Section: Effect Of Surface Modificationmentioning

confidence: 99%

Experimental characterization of contact angle and surface energy on aramid fibers

Hao

Yao

et al. 2013

Journal of Adhesion Science and Technology

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In this paper, both contact angles and surface energy of aramid fibers are investigated using the liquid droplet method. First, the contact angles between matrix resin and aramid fibers are measured at different degrees of cure, which indicate that the contact angles increased initially and then decreased after the consolidation. Second, surface energy components of aramid fibers are determined from the contact angle using the geometric-mean equations. Finally, the influences of various surface treatments on the surface energy of aramid fibers are analyzed. These results play an important role for designing and evaluating the fiber/ matrix interfacial strength of aramid fiber-reinforced composites.

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“…Contact angles on single natural fibers can be measured either directly (Le et al 1996;Silva et al 1999) or indirectly, using the modified Wilhelmy technique (Aranberri-Askargorta et al 2003). However, in the case of natural fibers the Wilhelmy method is hardly applicable, owing to the wide variation in fiber perimeter and fiber shape (van Hazendonk et al 1993).…”

Section: Wetting Propertiesmentioning

confidence: 99%

Analysis of the effects of catalytic bleaching on cotton

et al. 2007

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Hydrogen peroxide can be catalyzed to bleach cotton fibers at temperatures as low as 308C by incorporating dinuclear tri-l-oxo bridged manganese(IV) complex of the ligand 1,4,7-trimethyl-1,4,7-triazacyclononane (MnTACN) as the catalyst in the bleaching solution. The catalytic system was found to be more selective under the conditions applied than the non-catalytic H 2 O 2 system, showing better bleaching performance while causing slightly lower decrease in degree of polymerization (DP) of cellulose. In order to gain fundamental knowledge of the bleach effect on cotton fibers and cellulose as its main component, especially after catalytic bleaching, X-ray Photoelectron Spectroscopy (XPS) was used to study surface chemical effects. The Washburn method was applied to investigate wetting properties, and liquid porosity was used to obtain pore volume distribution (PVD) plots. Parallel analyzes performed on model cotton fabric, i.e. ''clean'' cotton fabric stained with morin -a pigment regularly found in native cotton fiber, helped to differentiate between pigment oxidation and other bleaching effects produced on the (regular) industrially scoured cotton fabric. Bleaching was not limited to the chemical action but also affected cotton fiber capillary parameters most likely due to the removal of non-cellulosic materials as well as chain-shortened cellulose.

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Measuring the Contact Angles of Liquid Droplets on Wool Fibers and Determining Surface Energy Components

Cited by 33 publications

References 26 publications

Wetting and Wicking in Fibrous Materials

Wetting and Wicking in Fibrous Materials

Experimental characterization of contact angle and surface energy on aramid fibers

Analysis of the effects of catalytic bleaching on cotton

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