Wettability of sapwood and heartwood of thermally modified Norway spruce and Scots pine

Sini Metsä-Kortelainen (Corresponding Author), Hannu Viitanen

    Research output: Contribution to journalArticleScientificpeer-review

    21 Citations (Scopus)

    Abstract

    In this research, the effect of thermal modifications at 170°C, 190°C, 210°C and 230°C on the wettability of sapwood and heartwood of Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) was studied by measuring the static contact angles of distilled water on the surfaces as a function of time. The results were compared to industrially kiln-dried reference samples. The thermal modification at the lower temperatures of 170°C and 190°C increased the wettability of all wood materials with the exception of the heartwood of pine that had been thermally modified at 170°C, which was the most water-repellent material in the whole study. Thermal modification at the very high temperature of 230°C was needed to decrease the wettability of wood. The differences in water repellency between sapwood and heartwood were greater for pine than for spruce.
    Original languageEnglish
    Pages (from-to)135-139
    Number of pages5
    JournalEuropean Journal of Wood and Wood Products
    Volume70
    Issue number1-3
    DOIs
    Publication statusPublished - 2012
    MoE publication typeA1 Journal article-refereed

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    wettability
    heartwood
    sapwood
    Pinus sylvestris
    Picea abies
    Wetting
    heat
    Water
    Wood
    Pinus
    reference sample
    kilns
    contact angle
    water
    Kilns
    repellents
    Contact angle
    Picea
    temperature
    Temperature

    Cite this

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    title = "Wettability of sapwood and heartwood of thermally modified Norway spruce and Scots pine",
    abstract = "In this research, the effect of thermal modifications at 170°C, 190°C, 210°C and 230°C on the wettability of sapwood and heartwood of Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) was studied by measuring the static contact angles of distilled water on the surfaces as a function of time. The results were compared to industrially kiln-dried reference samples. The thermal modification at the lower temperatures of 170°C and 190°C increased the wettability of all wood materials with the exception of the heartwood of pine that had been thermally modified at 170°C, which was the most water-repellent material in the whole study. Thermal modification at the very high temperature of 230°C was needed to decrease the wettability of wood. The differences in water repellency between sapwood and heartwood were greater for pine than for spruce.",
    author = "Sini Mets{\"a}-Kortelainen and Hannu Viitanen",
    year = "2012",
    doi = "10.1007/s00107-011-0523-5",
    language = "English",
    volume = "70",
    pages = "135--139",
    journal = "European Journal of Wood and Wood Products",
    issn = "0018-3768",
    publisher = "Springer",
    number = "1-3",

    }

    Wettability of sapwood and heartwood of thermally modified Norway spruce and Scots pine. / Metsä-Kortelainen, Sini (Corresponding Author); Viitanen, Hannu.

    In: European Journal of Wood and Wood Products, Vol. 70, No. 1-3, 2012, p. 135-139.

    Research output: Contribution to journalArticleScientificpeer-review

    TY - JOUR

    T1 - Wettability of sapwood and heartwood of thermally modified Norway spruce and Scots pine

    AU - Metsä-Kortelainen, Sini

    AU - Viitanen, Hannu

    PY - 2012

    Y1 - 2012

    N2 - In this research, the effect of thermal modifications at 170°C, 190°C, 210°C and 230°C on the wettability of sapwood and heartwood of Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) was studied by measuring the static contact angles of distilled water on the surfaces as a function of time. The results were compared to industrially kiln-dried reference samples. The thermal modification at the lower temperatures of 170°C and 190°C increased the wettability of all wood materials with the exception of the heartwood of pine that had been thermally modified at 170°C, which was the most water-repellent material in the whole study. Thermal modification at the very high temperature of 230°C was needed to decrease the wettability of wood. The differences in water repellency between sapwood and heartwood were greater for pine than for spruce.

    AB - In this research, the effect of thermal modifications at 170°C, 190°C, 210°C and 230°C on the wettability of sapwood and heartwood of Scots pine (Pinus sylvestris) and Norway spruce (Picea abies) was studied by measuring the static contact angles of distilled water on the surfaces as a function of time. The results were compared to industrially kiln-dried reference samples. The thermal modification at the lower temperatures of 170°C and 190°C increased the wettability of all wood materials with the exception of the heartwood of pine that had been thermally modified at 170°C, which was the most water-repellent material in the whole study. Thermal modification at the very high temperature of 230°C was needed to decrease the wettability of wood. The differences in water repellency between sapwood and heartwood were greater for pine than for spruce.

    U2 - 10.1007/s00107-011-0523-5

    DO - 10.1007/s00107-011-0523-5

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    JO - European Journal of Wood and Wood Products

    JF - European Journal of Wood and Wood Products

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    ER -