Učinci katalizatora na modul loma i kemijsku strukturu toplinski obrađenog drva
| Autor: | Günay Özbay, Nadir Ayrilmis, Suat Altun, Erkan Sami Kokten, Ayhan Özçifçi |
|---|---|
| Přispěvatelé: | [Ozcifci, Ayhan -- Ozbay, Gunay] Aksaray Univ, Fac Engn, Aksaray, Turkey -- [Kokten, Erkan Sami -- Altun, Suat] Karabuk Univ, Fac Engn, Karabuk, Turkey -- [Ayrilmis, Nadir] Istanbul Univ, Fac Forestry, Istanbul, Turkey, Ayrilmis, Nadir -- 0000-0002-9991-4800, ozbay, gunay -- 0000-0002-7951-8421, Mühendislik Fakültesi |
| Jazyk: | angličtina |
| Rok vydání: | 2018 |
| Předmět: |
Potassium hydroxide
heat treatment Scotch pine mechanical strength catalyst chemical properties Materials science Chemical structure chemistry.chemical_element Forestry Nitrogen Catalysis chemistry.chemical_compound chemistry Flexural strength Chemical engineering Sodium hydroxide Heat treated toplinska obrada obični bor mehanička čvrstoća katalizator kemijska svojstva |
| Zdroj: | Drvna industrija Volume 69 Issue 3 |
| ISSN: | 0012-6772 1847-1153 |
| Popis: | WOS: 000446345200001 Heat treatment process, which is widely used in the wood industry, has shown some negative effects on the mechanical strength of wood. The objective of this study was to investigate the effects of catalysts on the modulus of rupture (MOR), mass loss and chemical structure of heat-treated Scotch pine (Pinus sylvestris L.) samples. For this purpose, some catalysts (50 % NaOH and 47 % KOH solutions, solid KOH) were added to the heat treatment process. Heat treatment experiments were performed under the nitrogen atmosphere at the temperature of 212 degrees C for 2 h. The MOR and chemical changes monitored by FT-IR spectra were then examined for the test groups. According to the results of this study, the use of commercial solid potassium hydroxide (KOH) in heat treatment decreased the degree of strength loss and mass loss of heat-treated wood. The strength (MOR) loss of samples heat-treated in the presence of potassium hydroxide was found to be only 5.4 %, while the strength loss in non-catalytic treatment was found to be 12.5 %. TUBITAK (The Scientifi c and Technological Research Council of Turkey) [114O036] This study was supported by TUBITAK (The Scientifi c and Technological Research Council of Turkey) (Project grant number: 114O036). |
| Databáze: | OpenAIRE |
| Externí odkaz: |
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