Temperature effects on dynamic water absorption into paper

Joel Songok, Pekka Salminen, Martti Toivakka

    Research output: Contribution to journalArticleScientificpeer-review

    34 Citations (Scopus)


    Mechanisms controlling short time water absorption and the effect of temperature on water absorption into paper were investigated by analyzing previously published data. A dynamic contact angle effect caused by contact line friction explained the liquid uptake dynamics at short times. The water absorption rate increase with temperature is suggested to be controlled by the molecular processes occurring in front of the advancing liquid front. The increase in the non-equilibrium vapor pressure at air-liquid interface leads to higher water molecule adsorption onto fibers and associated lowering of the solid-gas interfacial tension, thereby increasing the wetting velocity and water absorption. The classical LucasWashburn equation was found to be inadequate for predicting water absorption into paper both at short times and as a function of temperature.
    Original languageUndefined/Unknown
    Pages (from-to)373–377
    Number of pages5
    JournalJournal of Colloid and Interface Science
    Publication statusPublished - 2014
    MoE publication typeA1 Journal article-refereed


    • Contact angle
    • Liquid penetration
    • Paper
    • Temperature dependence

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