Modeling of the capillary wicking of flax fibers by considering the effects of fiber swelling and liquid absorption
Autor: | Guilherme Apolinario Testoni, Anurag Pisupati, Sihwan Kim, Chung Hae Park |
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Přispěvatelé: | Ecole nationale supérieure Mines-Télécom Lille Douai (IMT Lille Douai), Institut Mines-Télécom [Paris] (IMT) |
Rok vydání: | 2018 |
Předmět: |
Materials science
Capillary action Single fiber Physics::Optics 02 engineering and technology Free space 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Surfaces Coatings and Films Electronic Optical and Magnetic Materials Physics::Fluid Dynamics Condensed Matter::Soft Condensed Matter Biomaterials Flax fiber [SPI]Engineering Sciences [physics] Permeability (earth sciences) Colloid and Surface Chemistry Washburn's equation medicine Composite material Swelling medicine.symptom 0210 nano-technology |
Zdroj: | Journal of Colloid and Interface Science Journal of Colloid and Interface Science, Elsevier, 2018, 525, pp.166-176. ⟨10.1016/j.jcis.2018.04.064⟩ |
ISSN: | 0021-9797 1095-7103 |
Popis: | We propose a new model for the capillary rise of liquid in flax fibers whose diameter is changed by liquid absorption. Liquid absorption into the flax fibers is taken into account in a new modified Washburn equation by considering the mass of the liquid absorbed inside the fibers as well as that imbibed between the fibers. The change of permeability and hydraulic radius of pores in a fibrous medium due to the fiber swelling is modeled by a statistical approach considering a non-uniform distribution of flax fiber diameter. By comparisons between capillary rise test results and modeling results, we prove the validity of the proposed modified Washburn model to take into account the effects from fiber swelling and liquid absorption on the decrease of capillary rise velocity. The experimental observation of long-term capillary rise tests show that the swelling behavior of the fibers highly packed in a closed volume and its influence on the capillary wicking are different from those of an individual single fiber in a free space. The current approach was useful to characterize the swelling of fibers highly packed in a closed volume and its influence of the long-term behavior of capillary wicking. © 2018 Elsevier Inc. |
Databáze: | OpenAIRE |
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