Equilibrium contact angle measurements of natural fibers by an acoustic vibration technique
(2014) Colloids and Surfaces A: Physicochemical and Engineering Aspects — Vol. 455, p. 164-173 (2014)
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- Abstract
- tSorption of fluids during typical wetting experiments on natural fibers produces a zero receding contactangle situation, leading to an incomplete analysis of their wetting behavior. An acoustic vibration methodwas used to measure “equilibrium” contact angles on natural bamboo fibers. The correctness of the tech-nique is verified by performing the experiment with polyethylene terephthalate (PET) fibers and films,and comparing these results with the average of the cosine functions of the advancing and receding anglesfor a given system. Surface energies and components of the surface energies of bamboo and PET fiberswere estimated using the “equilibrium” contact angle data of various test liquids by using the acid–baseapproach. The results are in general agreement with X-ray photoelectron spectroscopy (XPS) analysis ofthe fiber’s surface. The findings contribute to a better understanding of the complex phenomena occur-ring during wetting of natural fibers and suggest that the contact angle obtained by forcing relaxationthrough acoustic vibration is a reliable method for study the wetting behavior of natural fibers.
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Fuentes, C. A., Beckers, K., Pfeiffer, H., Tran, L. Q. N., Dupont, C., Verpoest, I., & Van Vuure, A. W. (2014). Equilibrium contact angle measurements of natural fibers by an acoustic vibration technique. Colloids and Surfaces A: Physicochemical and Engineering Aspects, 455, 164-173. https://doi.org/10.1016/j.colsurfa.2014.04.054 (Original work published 2014)