Sonic disruption of wood pulp fibres aided by hydrophobic cavitation nuclei

Nicole Anderton, Craig S. Carlson, Albert T. Poortinga, Hu Xinyue, Nobuki Kudo, Michiel Postema

    Tutkimustuotos: ArtikkeliTieteellinenvertaisarvioitu

    2 Sitaatiot (Scopus)
    7 Lataukset (Pure)

    Abstrakti

    For paper manufacturing and biofuel production, the controlled deformation of wood pulp is of interest, provided that the integrity of the fibre structure remains intact. Conventional ultrasonic pretreatment in the near-audible range has been observed to cause uncontrolled inertial cavitation damage in the wood pulp fibres. To prevent internal damage, we proposed to subject wood pulp mixed with hydrophobic particles to 1-MHz short pulses above the nucleation threshold of the particles but below the Blake threshold, and to observe the interaction of pulsating cavities and wood pulp fibres assisted by high-speed photography. Our 1-MHz results showed the interaction of a collapsing bubble with a wood pulp fibre wall to form a liquid jet hitting the fibre, without apparent destruction of the structure, whilst our 20-kHz controls confirmed previously observed structural destruction. This study shows the feasibility of controlled wood fibre deformation at a high ultrasound frequency.
    AlkuperäiskieliEnglanti
    Artikkeli018001
    JulkaisuJapanese Journal of Applied Physics
    Vuosikerta62
    Numero1
    Varhainen verkossa julkaisun päivämäärä23 jouluk. 2022
    DOI - pysyväislinkit
    TilaJulkaistu - 2023
    OKM-julkaisutyyppiA1 Alkuperäisartikkeli tieteellisessä aikakauslehdessä

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