Influence of thermal modification and impregnation with biocides on physical properties of Italian stone pine wood (Pinus pinea L.)

De Angelis, Marco (author), Humar, Miha (author), Kržišnik, Davor (author), Tamantini, Swati (author), Romagnoli, Manuela (author)

The sudden availability of Italian stone pine (Pinus pinea L.) wood due to the infestation of pathogenic fungi and insects highlighted the need to promote its use as a short supply chain resource in Italy and other Mediterranean countries. However, the durability of stone pine sapwood must be enhanced if outdoor use is to be considered. The impregnability of stone pine wood was studied following the standard EN 351-1:2008, using immersion, vacuum, and high-pressure methods with natural waxes and organic solvent-based and copper-amino-based preservative solutions. The efficacy of the impregnation was determined by calculating the kilos of preservative absorbed per cubic meter of wood and by measuring the penetration depth of the preservative. Thermal modifications were carried out using five different maximum temperatures, and their efficacy was determined by measuring the mass loss and color change. Subsequent to thermal treatments, the wood was exposed to a water-vapor-saturated atmosphere, and the increase in mass was calculated for different periods. Stone pine and Scots pine sapwoods showed similar response to the treatments with the exception of soaking impregnation methods where stone pine showed higher uptake, in particular when Silvanolin was used. Our investigation shows that stone pine can be a suitable short supply chain resource in Italy that, when impregnated, could be tested for outdoor use, exactly as is the case with Scots pine.

• Language: English
• Keywords: Pinus pinea wood, thermal treatments, impregnation, durability, short supply chain
• Work type: Article
• Typology: 1.01 - Original Scientific Article
• Organization: BF - Biotechnical Faculty
• Publication status: Published
• Publication version: Version of Record
• Publication date: 01.01.2022
• Year: 2022
• Number of pages: 13 str.
• Numbering: Vol. 12, iss. 8
• PID: 20.500.12556/RUL-136459
• UDC: 630*8
• ISSN on article: 2076-3417
• DOI: 10.3390/app12083801
• COBISS.SI-ID: 104385539
• Publication date in RUL: 05.05.2022

Record is a part of a journal

• Title: Applied sciences
• Shortened title: Appl. sci.
• Publisher: MDPI
• ISSN: 2076-3417
• COBISS.SI-ID: 522979353

Licences

• License: CC BY 4.0, Creative Commons Attribution 4.0 International
• Link: http://creativecommons.org/licenses/by/4.0/
• Description: This is the standard Creative Commons license that gives others maximum freedom to do what they want with the work as long as they credit the author.
• Licensing start date: 09.04.2022

Secondary language

• Language: Slovenian
• Keywords: pinja, les, termična modifikacija, impregnacija, odpornost, kratke dobavne verige

Projects

• Funder: ARRS - Slovenian Research Agency
• Project number: P4-0015
• Name: Les in lignocelulozni kompoziti

• Funder: Other - Other funder or multiple funders
• Funding programme: Ministry of Agriculture, Forestry and Food
• Project number: V4-2017