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Evaluation of Chemical and Morphological Properties of Spruce Wood Stored in the Natural Environment

Polymers, 2023-12, Vol.15 (24), p.4734 [Peer Reviewed Journal]

COPYRIGHT 2023 MDPI AG ;2023 by the authors. 2023 ;ISSN: 2073-4360 ;EISSN: 2073-4360 ;DOI: 10.3390/polym15244734 ;PMID: 38139985

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  • Title:
    Evaluation of Chemical and Morphological Properties of Spruce Wood Stored in the Natural Environment
  • Author: Čabalová, Iveta ; Bélik, Michal ; Kučerová, Viera ; Jurczyková, Tereza ; Bubeníková, Tatiana
  • Subjects: Analysis ; Cellulose ; cellulose polymerization degree ; chemical composition ; Formic acid ; Galactose ; High performance liquid chromatography ; Lignin ; Organic acids ; Polymerization ; saccharides ; spruce wood ; wood degradation
  • Is Part Of: Polymers, 2023-12, Vol.15 (24), p.4734
  • Description: This paper focuses on the changes in chemical structure and fiber morphological properties of spruce wood during 15 months of its storage in an open forest woodshed. From the chemical composition, the extractives, cellulose, holocellulose, and lignin content were determined. The pH value was measured on the wood surface using a contact electrode. Acetic and formic acid, saccharides (glucose, xylose, galactose, arabinose and mannose), and polymerization degree (PD) of cellulose were analyzed using the HPLC method. Fiber length and width were determined using a fiber tester analyzer. After 15 months of storage the content of both cellulose (determined by the Seifert method) and lignin did not change; the quantity of hemicelluloses decreased by 13.2%, due to its easier degradation and less stability compared to cellulose; and the pH value dropped by one degree. HPLC analyses showed a total decrease in the cellulose DP of 9.2% and in saccharides of 40.2%, while the largest decreases were recorded in the quantity of arabinose, by 72%, in the quantity of galactose, by 61%, and in the quantity of xylose, by 43%. Organic acids were not detected due to their high volatility during wood storage. The total decrease in average fiber length was 38.2% and in width was 4.8%. An increase in the proportion of shorter fibers, and a decrease in the proportion of longer fibers, was recorded. It can be concluded that fundamental changes occurred in the wood, which could affect the quality of further products (e.g., chips, pulp, paper, particleboards).
  • Publisher: Switzerland: MDPI AG
  • Language: English
  • Identifier: ISSN: 2073-4360
    EISSN: 2073-4360
    DOI: 10.3390/polym15244734
    PMID: 38139985
  • Source: GFMER Free Medical Journals
    PubMed Central
    ROAD: Directory of Open Access Scholarly Resources
    ProQuest Central
    DOAJ Directory of Open Access Journals
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