Lightweight materials by tailoring foam-fiber interactions

    Research output: Chapter in Book/Report/Conference proceedingConference article in proceedingsScientificpeer-review

    Abstract

    We studied surface interactions in simplified fiber-foam systems with the captive bubble and fiber bed methods. The captive bubble technique was used to measure the bubble interaction with different cellulose model surfaces in sodium dodecyl sulfate (SDS) solution. The interaction of a single bubble with real fibers, submerged in SDS solution, was investigated using the fiber bed. Bubbles had clear adhesion to fiber surfaces in water, and the addition of SDS decreased this attraction. At high SDS concentration, the attraction was lost due to wetting transition. However, a smooth cellulose model surface did not attract bubbles even in the absence of surfactant. This suggests that the observed interaction with cellulose nanofibrils and fibers was caused by the presence of hydrophobic regions of the respective surface (e.g. lignin or nanobubbles).
    Original languageEnglish
    Title of host publicationProgress in Paper Physics Seminar
    Subtitle of host publicationAbstract book of the PPPS2020 seminar
    EditorsJarmo Kouko, Jani Lehto , Tero Tuovinen
    PublisherVTT Technical Research Centre of Finland
    Pages105-108
    ISBN (Electronic)978-951-38-8736-0
    ISBN (Print)978-951-38-8738-4
    DOIs
    Publication statusPublished - 1 Sep 2020
    MoE publication typeA4 Article in a conference publication
    EventProgress in Paper Physics Seminar, PPPS 2020 - Jyväskylä, Finland
    Duration: 1 Sep 20203 Sep 2020

    Publication series

    SeriesVTT Technology
    Number378
    ISSN2242-1211

    Seminar

    SeminarProgress in Paper Physics Seminar, PPPS 2020
    Abbreviated titlePPPS2020
    CountryFinland
    CityJyväskylä
    Period1/09/203/09/20

    Keywords

    • foam forming
    • cellulose
    • bubble-fibre interaction
    • model surface
    • captive bubble
    • wetting transition

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