Preservative retention and penetration in Norway spruce wood as influenced by different microwave treatment energy levels

Ganguly, Sauradipta (avtor), Petrič, Marko (avtor), Balzano, Angela (avtor), Hom, Sanjeet Kumar (avtor), Sharma, Varun (avtor), Kržišnik, Davor (avtor)

Norway spruce (Picea abies) is often used in construction but is difficult to impregnate with wood preservatives due to pit aspiration, limiting its treatability. The low natural durability of spruce necessitates preservation treatments. Microwave treatment improves the permeability, increasing preservative retention and penetration. However, treatability assessment has often been conducted using visual methods, which can over - or underestimate success. This study used image processing to evaluate MW-treated spruce's treatability with two water-based preservatives. The effect of MW treatment at five energy levels was analysed for sapwood and heartwood. The results showed improved retention values and penetration percentages for the MW-treated sapwood and the heartwood. The retention values of both preservatives increased between 50% and 124% for different treatment combinations. Spruce heartwood MW-treated with 1260 MJ/m$^3$ improved treatability by 24% when analysed with ImageJ. The anatomical analysis showed that the effect of MW on heartwood was more pronounced than on sapwood, leading to the destruction of rays and parenchyma cells that facilitated the absorption and penetration of the preservatives. The study demonstrates the potential of ImageJ for more accurate treatability assessment and suggests that MW treatment if optimised, could improve the natural durability of spruce wood.

• Jezik: Angleški jezik
• Ključne besede: wood preservation, treatability, ImageJ analysis, anatomical analysis, pit aspiration
• Vrsta gradiva: Članek v reviji
• Tipologija: 1.01 - Izvirni znanstveni članek
• Organizacija: BF - Biotehniška fakulteta
• Status publikacije: Objavljeno
• Različica publikacije: Objavljena publikacija
• Leto izida: 2026
• Št. strani: Str. 1211–1223
• Številčenje: Vol. 21, no. 2
• PID: 20.500.12556/RUL-181949
• UDK: 630*8
• ISSN pri članku: 1748-0280
• DOI: 10.1080/17480272.2025.2471959
• COBISS.SI-ID: 229518595
• Datum objave v RUL: 20.04.2026

Gradivo je del revije

• Naslov: Wood material science & engineering
• Skrajšan naslov: Wood mater. sci. eng
• Založnik: Taylor & Francis
• ISSN: 1748-0280
• COBISS.SI-ID: 522172953

Licence

• Licenca: CC BY-NC-ND 4.0, Creative Commons Priznanje avtorstva-Nekomercialno-Brez predelav 4.0 Mednarodna
• Povezava: http://creativecommons.org/licenses/by-nc-nd/4.0/deed.sl
• Opis: Najbolj omejujoča licenca Creative Commons. Uporabniki lahko prenesejo in delijo delo v nekomercialne namene in ga ne smejo uporabiti za nobene druge namene.

Sekundarni jezik

• Jezik: Slovenski jezik
• Ključne besede: zaščita lesa, možnost obdelave, analiza ImageJ, anatomska analiza, aspiracija pikenj