Journal article Open Access

Assessment of the chemical change in heat treated pine wood by near infrared spectroscopy

Zuzana Vidholdová; Anna Sandak; Jakub Sandak


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    "description": "<p>Fourier-transform near-infrared spectroscopy (FT-NIR) was used as none-destructive&nbsp;method to determinate changes in the chemical structure of heat-treated wood. For this purpose,&nbsp;pine sapwood (Pinus sylvestris L.) was treated at different temperatures (from 100 &deg;C to 240 &deg;C)&nbsp;and for three durations(1, 3 or 5 hours). The effects of chemical changes on the FT-NIR spectra are linked to absorbance changes of functional groups (&ndash;OH, &ndash;CH, &ndash;CO and &ndash;CH2) of lignin,&nbsp;hemicelluloses and cellulose. Gradual degradation of amorphous portion of cellulose was&nbsp;caused by high temperature, while crystalline and semi-crystalline portions of cellulose&nbsp;seem to be less affected by the thermal treatment. The effect of various intensities of heat&nbsp;treatment on chemical changes of wood polymers varied depending on temperature and&nbsp;duration. Presentation of spectra in the form of the xylograms shows clear tendency of&nbsp;degradation kinetic. Evaluation of thermal stability of selected wood component and/or&nbsp;comparison of the influence of modification process parameters can be carried out.</p>", 
    "alternate_identifiers": [
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    "title": "Assessment of the chemical change in heat treated pine wood by near infrared spectroscopy", 
    "license": {
      "id": "CC-BY-4.0"
    }, 
    "journal": {
      "volume": "61", 
      "issue": "1", 
      "pages": "31-42", 
      "title": "Acta Facultatis Xylologiae Zvolen"
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    "keywords": [
      "Pine", 
      "Heat treatment", 
      "xylograms", 
      "FT-NIR"
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    "publication_date": "2019-04-10", 
    "creators": [
      {
        "affiliation": "Technical University in Zvolen", 
        "name": "Zuzana Vidholdov\u00e1"
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        "orcid": "0000-0002-2515-0991", 
        "affiliation": "InnoRenew CoE; University of Primorska; Trees and Timber Institute CNR-IVALSA", 
        "name": "Anna Sandak"
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        "affiliation": "InnoRenew CoE; University of Primorska; Trees and Timber Institute CNR-IVALSA", 
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