Characterization of thermally modified wood at different industrial conditions

• Autorzy: Herrera R. , Krystofiak T. , Labidi J. , Llano-Ponte R.

Identyfikatory

DOI

10.12841/wood.1644-3985.C05.15

• Języki publikacji: EN

Abstrakty

EN

In this study European ash wood (Fraxinus excelsior L.) was modified at 192ºC and 202ºC in Thermo-Drewno®, Poland; and at 212ºC in Termogenik®, Spain. After modification, samples were characterized by wet chemistry according to standard methods (TAPPI) and by instrumental methods (FT-IR); in addition, surface and physical properties were measured (density, acidity, moisture, water uptake, contact angle, colour) in order to quantify changes due to treatment and temperature. The results showed that chemical composition of modified wood presents a gradual variation according to the heating regime, regardless of the industrial process applied; the greatest differences were obtained in treatment at 212°C compared to untreated wood. Furthermore, the density (< 0.68 g·cm^-3) of modified wood decreased proportionally to treatment temperature. Colour measurements showed proportional changes to darker colours depending on the treatment temperature. On the other hand, some physical properties did not vary significantly between treatments, obtaining similar values of contact angle (97°-99°) and of moisture content (<7%).

Słowa kluczowe

EN

thermal modification; physicochemical properties; European ash wood

• Wydawca: Sieć Badawcza Łukasiewicz - Poznański Instytut Technologiczny
• Czasopismo: Drewno : prace naukowe, doniesienia, komunikaty
• Rocznik: 2016
• Tom: vol. 59, nr 197
• Strony: 151--164
• Opis fizyczny: Bibliogr. 40 poz., rys., tab.

Twórcy

autor

Herrera R.

• University of the Basque Country UPV/EHU, San Sebastian, Spain

autor

Krystofiak T.

• Poznan University of Life Sciences, Poznan, Poland

autor

Labidi J.

• University of the Basque Country UPV/EHU, San Sebastian, Spain

autor

Llano-Ponte R.

• University of the Basque Country UPV/EHU, San Sebastian, Spain

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• List of standards
• TAPPI T211 om-12 – Ash in wood, pulp, paper and paperboard: combustion at 525°
• TAPPI T264 cm-07 – Preparation of wood for chemical analysis
• TAPPI T222 om-02 – Acid-insoluble lignin in wood and Pulp

Uwagi

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę.