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Effects of different energy intensities of microwave treatment on heartwood and sapwood microstructures in Norway spruce
ID Ganguly, Sauradipta (Avtor), ID Balzano, Angela (Avtor), ID Petrič, Marko (Avtor), ID Kržišnik, Davor (Avtor), ID Tripathi, Sadhna (Avtor), ID Žigon, Jure (Avtor), ID Merela, Maks (Avtor)

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Izvleček
Microwave modification can increase the permeability of wood by delaminating and rupturing its anatomical microstructures at their weak points. A high degree of intensity of microwave modification can cause significant structural damage to the microstructures of wood, resulting in poorer strength properties. The objective of this study was to evaluate the changes in the anatomical structure of Norway spruce (Picea abies (L.) Karst.) heartwood and sapwood after microwave modification in order to develop the most effective treatment in terms of applied energy without causing significant structural damage. Analysis with light and scanning electron microscopy were performed to evaluate the effect of microwave treatment for two different energy intensities, moderate and high intensity. The results indicated structural changes in the tracheid cells. Microscopy showed varying degrees of modification within the wood microstructure, with the heartwood samples showing a greater anatomical distortion compared to their sapwood counterparts. Furthermore, the samples were subjected to pycnometric density measurements, which indicated a reduction in skeletal and absolute density after microwave modification, for both high and moderate intensity treatment on sapwood and heartwood samples. With increasing microwave energy, a gradual increase in specific pore volume and porosity percentage of the samples were also detected.

Jezik:Angleški jezik
Ključne besede:Picea abies, microwave treatment, light microscopy, scanning electron microscopy, wood anatomy, wood properties, density, permeability, porosity
Vrsta gradiva:Članek v reviji
Tipologija:1.01 - Izvirni znanstveni članek
Organizacija:BF - Biotehniška fakulteta
Status publikacije:Objavljeno
Različica publikacije:Objavljena publikacija
Leto izida:2021
Št. strani:16 str.
Številčenje:Vol. 12, iss. 5, art. 598
PID:20.500.12556/RUL-127564 Povezava se odpre v novem oknu
UDK:630*8
ISSN pri članku:1999-4907
DOI:10.3390/f12050598 Povezava se odpre v novem oknu
COBISS.SI-ID:62577411 Povezava se odpre v novem oknu
Datum objave v RUL:15.06.2021
Število ogledov:1148
Število prenosov:272
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Gradivo je del revije

Naslov:Forests
Skrajšan naslov:Forests
Založnik:MDPI
ISSN:1999-4907
COBISS.SI-ID:3872166 Povezava se odpre v novem oknu

Licence

Licenca:CC BY 4.0, Creative Commons Priznanje avtorstva 4.0 Mednarodna
Povezava:http://creativecommons.org/licenses/by/4.0/deed.sl
Opis:To je standardna licenca Creative Commons, ki daje uporabnikom največ možnosti za nadaljnjo uporabo dela, pri čemer morajo navesti avtorja.
Začetek licenciranja:10.05.2021

Sekundarni jezik

Jezik:Slovenski jezik
Ključne besede:obdelava z mikrovalovi, svetlobna mikroskopija, elektronska vrstična mikroskopija, anatomija lesa, lastnosti lesa, gostota, permeabilnost

Projekti

Financer:ARRS - Agencija za raziskovalno dejavnost Republike Slovenije
Številka projekta:P4-0015
Naslov:Les in lignocelulozni kompoziti

Financer:Drugi - Drug financer ali več financerjev
Program financ.:Slovenia, CMEPIUS

Financer:Drugi - Drug financer ali več financerjev
Program financ.:India, UCOST

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