Wetting and swelling in liquid penetration In the previous section, we showed that the Lucas-Washburn equation for inert liquids often cannot describe the penetration of water in paper. This suggests that surface chemistry and certain microscopic phenomena may complicate the penetration. The mechanisms that may affect the time dependence include wetting and dynamic contact angle,
Authors & references
Professor Jouni Paltakari, Aalto University
Based on: Kettle, J. Moisture and fluid transport (Chapter 7). In: Niskanen, K. (ed), Paper Physics, (Book 16), Papermaking Science and Technology. 2nd edition. Jyväskylä, 2008, Finnish Paper Engineers’ Association/Paperi ja Puu Oy. pp. 265 – 294.
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