Variation in treatability of Scots pine sapwood: a survey of 25 different northern European locations

Zimmer, Katrin; Høibø, Olav; Vestøl, Geir I.; Larnøy, Erik

doi:10.1007/s00226-014-0660-1

Cited by 16 publications

(23 citation statements)

References 34 publications

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“…One reason could be that the FA solution enters the ray tracheids predominantly via the connecting pits of the EW tracheids. The variability in filled cell lumens in the axial and radial directions supports the findings of Lande et al (2010) or Zimmer et al (2014) and are manifestations of varying permeability in Scots pine sapwood. This seems to also apply for radiata pine sapwood.…”

Section: Light Microscopy and Semsupporting

confidence: 78%

“…Aspirated tracheid bordered pits are assumed to function as physical barriers in case of impregnation (Stamm 1946;Zimmer et al 2014). UMSP indicates a concentration decrement of polymerized FA from CML to S2.…”

Section: Light Microscopy and Semmentioning

confidence: 99%

“…The permeability of W untr may vary due to various physiological parameters in the living tree and also by the drying parameters (Booker 1990;Booker and Evans 1994;Zimmer et al 2009Zimmer et al , 2014Lande et al 2010). For successful wood protection system performance, a homogenous distribution of the treating solution in the wooden tissue is essential (Zimmer et al 2012).…”

Section: Light Microscopy and Semmentioning

confidence: 99%

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Topochemical analyses of furfuryl alcohol-modified radiata pine (Pinus radiata) by UMSP, light microscopy and SEM

et al. 2017

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Furfurylation is one of the wood modification techniques via catalytic polymerization of the monomeric furfuryl alcohol (FA) in the impregnated cell wall. Little is known about the topochemistry of this process. Brown rot degradation begins with lignin modification and therefore, the reactions between FA and lignin was one focus of this research. Furfurylated radiata pine (Pinus radiata) with three different weight percent gains (WPGs of 57%, 60% and 70%) after FA uptake was observed by cellular ultraviolet microspectrophotometry (UMSP) to analyze chemical alterations of the individual cell wall layers. Moreover, light microscopy (LM) and scanning electron microscopy (SEM) analyses were performed. The ultraviolet (UV) absorbance of the modified samples increased significantly compared to the untreated controls, indicating a strong polymerization of the aromatic compounds. Highest UV absorbances were found in areas with the highest lignin concentration. The UMSP images of individual cell wall layers support the hypothesis concerning condensation reactions between lignin and FA.

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Section: Light Microscopy and Semsupporting

confidence: 78%

Section: Light Microscopy and Semmentioning

confidence: 99%

Section: Light Microscopy and Semmentioning

confidence: 99%

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Topochemical analyses of furfuryl alcohol-modified radiata pine (Pinus radiata) by UMSP, light microscopy and SEM

et al. 2017

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“…With respect to anatomical characteristics, the main cause of the permeability difference in softwood is extent of closure of the bordered pit pair in heartwood and of the extract deposits accumulated on the pit membrane [32]. Increased permeability in sapwood is attributed to the size and frequency of resin canals and parenchyma rays [33].…”

Section: Introductionmentioning

confidence: 99%

An experimental study on change of gas permeability depending on pore structures in three species (hinoki, Douglas fir, and hemlock) of softwood

2020

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The purpose of this study is to analyze the pore structure for the heartwood, intermediate wood, and sapwood sections in three species of softwood (hinoki, Douglas fir, and hemlock) and to investigate the correlation of gas permeability depending on pore structure. For this study, gas permeability and pore size were measured by capillary flow porometry, and classification of a novel method was performed to determine the type of pores (through pores, blind pores, and closed pores) based on International Union of Pure and Applied Chemistry (IUPAC). Gas permeability, through pore porosity, and pore size increased from heartwood to sapwood. The results of multiple regression analysis showed that through pore porosity, mean pore size, and bulk density were significant factors affecting gas permeability.

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“…The values after reclassification are presented in Table II. The penetration of the solution depends on various factors of wood, for example, on porosity and growth increment [22,23]. In a previous study, better melamine penetration was achieved [13], which may have been due to the different viscosity of the solution.…”

Section: Resultsmentioning

confidence: 91%

The influence of melamine impregnation and heat treatment on the fire performance of Scots pine (Pinus sylvetris) wood

Lahtela

Kärki

2015

Fire and Materials

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Summary Wood, as a natural and renewable resource, is a popular material for construction, but its fire performance restricts its utilization. In addition, for example, the mechanical properties of wood have up till now been impaired by the most common fire retardants, and therefore, the investigation of wood modification with not‐weakening flame retardants is essential. This study investigates the effects of melamine impregnation and heat treatment on the fire performance of Scots pine (Pinus sylvetris L.). The treated samples were tested with a cone calorimeter, and the following features were studied: time to ignition, heat release, smoke production, and mass loss. The heat‐treated samples became more homogenous as regards the results of fire performance. Some of the examined fire behavior values decreased because of heat treatment, while the same values increased after the combination of melamine impregnation and heat treatment. The smoke production was reduced the most for the samples that were both impregnated and heat treated. Although the influence of treatment on the fire behavior properties of solid wood was relatively marginal, it was assumed that these treatments will not have a negative impact on the fire‐resistance properties of pine wood. Copyright © 2015 John Wiley & Sons, Ltd.

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Variation in treatability of Scots pine sapwood: a survey of 25 different northern European locations

Cited by 16 publications

References 34 publications

Topochemical analyses of furfuryl alcohol-modified radiata pine (Pinus radiata) by UMSP, light microscopy and SEM

Topochemical analyses of furfuryl alcohol-modified radiata pine (Pinus radiata) by UMSP, light microscopy and SEM

An experimental study on change of gas permeability depending on pore structures in three species (hinoki, Douglas fir, and hemlock) of softwood

The influence of melamine impregnation and heat treatment on the fire performance of Scots pine (Pinus sylvetris) wood

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