European Journal of Wood and Wood Products最新文献_第9页

Activated carbons prepared from stump wood of various tree species by chemical activation and their application for water purification 以不同树种残木为原料化学活化制备活性炭及其在水净化中的应用

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2024-10-12 DOI: 10.1007/s00107-024-02148-1

Beata Doczekalska, Natalia Ziemińska, Krzysztof Kuśmierek, Andrzej Świątkowski

{"title":"Activated carbons prepared from stump wood of various tree species by chemical activation and their application for water purification","authors":"Beata Doczekalska, Natalia Ziemińska, Krzysztof Kuśmierek, Andrzej Świątkowski","doi":"10.1007/s00107-024-02148-1","DOIUrl":"10.1007/s00107-024-02148-1","url":null,"abstract":"<div><p>Activated carbons (ACs) were produced from stump wood of different tree species, such as pine, bearded birch, and American black cherry using chemical activation with KOH and NaOH. The activated carbons were characterized and evaluated as adsorbents for eliminating bisphenol A (BPA) from aqueous solutions. The kinetics of adsorption and equilibrium adsorption, as well as the impact of solution pH and ionic strength, were examined. The kinetics were analyzed using the pseudo-first-order, pseudo-second-order, intra-particle diffusion, and Boyd kinetic models. The findings suggest that the adsorption kinetics followed the pseudo-second-order model. Additionally, the film diffusion was found to be the rate-determining step for the adsorption of BPA on all of the activated carbons. The data for adsorption equilibrium were tested using the Langmuir, Freundlich, and Sips equations, with results indicating that the Langmuir model was the most applicable. The capacity of activated carbons to adsorb BPA was dependent on their surface area. Higher BET surface areas resulted in increased adsorption. The birch-derived AC activated by NaOH had a monolayer adsorption capacity of 1.980 mmol/g, while the AC from black cherry activated with KOH had 2.195 mmol/g. The adsorption of BPA was pH-dependent, and no effect of ionic strength was observed. The activated carbons had very high adsorption capacities, indicating that stump wood is an excellent precursor for the production of highly effective adsorbents.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"82 6","pages":"2121 - 2135"},"PeriodicalIF":2.4,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-024-02148-1.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789335","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

The effect of the beech wood steaming condensate on curing behaviour of urea-formaldehyde adhesive 山毛榉木蒸凝液对脲醛胶固化性能的影响

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2024-10-12 DOI: 10.1007/s00107-024-02151-6

Milica Rančić, Mlađan Popović, Goran Milić, Nebojša Todorović, Marko Veizović, Ivana Gavrilović-Grmuša

{"title":"The effect of the beech wood steaming condensate on curing behaviour of urea-formaldehyde adhesive","authors":"Milica Rančić, Mlađan Popović, Goran Milić, Nebojša Todorović, Marko Veizović, Ivana Gavrilović-Grmuša","doi":"10.1007/s00107-024-02151-6","DOIUrl":"10.1007/s00107-024-02151-6","url":null,"abstract":"<div><p>This study explores the potential of using condensate generated during beech wood steaming (BSC) as an eco-friendly additive in urea-formaldehyde (UF) adhesives for wood-based panel (WBP) production. The research aimed to assess the hardening behavior of pure commercial UF resin and UF with added condensate (UF-BSC), investigating the potential catalytic effect of BSC on the hardening characteristics of UF adhesives. Changes in chemical structure after the curing process were observed with Fourier transform infrared spectroscopy (FTIR). The curing kinetics was studied by differential scanning calorimetry (DSC) under a dynamic scanning regime with heating rates of 5, 10, and 20 °C/min. Obtained data were analyzed using Kissinger-Akahira-Sunose (KAS) and Friedman (FR) kinetic iso-conversional methods to estimate the activation energy (E<sub>a</sub>) of the curing reaction in the investigated UF adhesive systems. The results of DSC analysis imply that BSC lowers the temperature of the curing reaction of UF adhesive along with the prolongation of the curing reaction. The obtained kinetic data supported by FTIR and chemical analysis suggest that phenolic compounds present in BSC interfere with the main curing reactions leading to lower peak temperatures but higher activation energy. Тhis suggests that BSC increased the number of active sites involved in the reaction and, consequently, the number of collisions. BSC, as wastewater of the wood processing industry, can be efficiently utilized as an environmentally friendly, inexpensive substitute for deionized water in UF adhesive formulations for WBP manufacturing.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"82 6","pages":"2137 - 2153"},"PeriodicalIF":2.4,"publicationDate":"2024-10-12","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789257","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Wood treatment by inorganic alumino-silicate polymers 无机铝硅酸盐聚合物处理木材

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2024-10-12 DOI: 10.1007/s00107-024-02150-7

Aitor Barbero-López, Paivo Kinnunen, Antti Haapala

引用次数: 0

Modification of nanolignin by deep eutectic solvent to improve the properties of phenol-formaldehyde resin 用深度共晶溶剂对纳米木质素进行改性以改善酚醛树脂的性能

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2024-10-10 DOI: 10.1007/s00107-024-02147-2

Hamed Younesi-Kordkheili, Antonio Pizzi

{"title":"Modification of nanolignin by deep eutectic solvent to improve the properties of phenol-formaldehyde resin","authors":"Hamed Younesi-Kordkheili, Antonio Pizzi","doi":"10.1007/s00107-024-02147-2","DOIUrl":"10.1007/s00107-024-02147-2","url":null,"abstract":"<div><p>To improve the reactive sites of lignin nanoparticles for use in phenol-formaldehyde resin (PF), a deep eutectic solvent (DES) composed of Choline Chloride–ZnCl<sub>2</sub> (ChCl-ZnCl<sub>2</sub>) was employed to pretreat nanolignin. The modified and unmodified lignin nanoparticles were used to replace high proportions of phenol (50%, 60%, and 70%) to prepare the lignin-phenol-formaldehyde (LPF) adhesive. FTIR spectroscopy was used to characterize the changes in the functional groups of nanolignin during DES treatment. The changes in glass transition temperature (T<sub>g</sub>) and the changes in curing temperature of the LPF resin were determined by Differential Scanning Calorimetry (DSC). The incorporation of modified nanolignin into the PF resin significantly increased the solid content, viscosity and accelerated the resin gel time. The phenolic hydroxyl content of DES-treated nanolignin increased and its methoxy content decreased moving away from the optimized experimental conditions. DSC curves show that DES-treated nanolignin has lower T<sub>g</sub> value (81 °C) than unmodified nanolignin and virgin lignin (84 °C; 92 °C), respectively. The LPF resin with DES-treated nanolignin showed a lower peak temperature compared to those prepared using unmodified nanolignin. The shear strength of the LPF adhesive prepared by DES-modified nanolignin was higher than that of the control samples. When the substitution degree of modified nanolignin for phenol reached 70%, the bond strength of the plywood prepared by the DES pretreated nanolignin was 2.3 MPa and the free formaldehyde content was 2.9 mg/100 g, thus meeting the requirements of international standards. Based on the findings of this research, a high proportion of phenol can be substituted by nanolignin in LPF resins without changing their properties when nanolignins are treated by DES.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"82 6","pages":"2099 - 2108"},"PeriodicalIF":2.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789253","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Effect of pH regulation on the properties of furfuryl alcohol-modified decorative veneer pH调节对糠醇改性装饰单板性能的影响

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2024-10-10 DOI: 10.1007/s00107-024-02122-x

Shuangshuang Wu, Ren Na, Stavros Avramidis, Wei Xu

{"title":"Effect of pH regulation on the properties of furfuryl alcohol-modified decorative veneer","authors":"Shuangshuang Wu, Ren Na, Stavros Avramidis, Wei Xu","doi":"10.1007/s00107-024-02122-x","DOIUrl":"10.1007/s00107-024-02122-x","url":null,"abstract":"<div><p>Combining decorative and functional elements is an essential trend in the value-added nature of fast-growing wood, which can promote its commercial application in wood-based boards, interior decoration, and furnishings. This study introduces a convenient method for preparing modified veneers that can replace the predominant market colors by adjusting the pH value and furfuryl alcohol (FA) concentration. The physical, mechanical, anti-mildew, and sound insulation properties were systematically evaluated. The results revealed that pH significantly affected color, and the surface bonding strength of all modified veneers met standard requirements. The shear strength, sound insulation properties, and dimensional stability of the plywood made from 70% FA-modified veneer at strong acid conditions were significantly improved, but the bending strength was reduced. Analysis of Variance revealed that pH values and FA concentration significantly affected the color changes. Combined with scanning electron microscopy (SEM), energy dispersive X-ray spectrometry (EDS), and Fourier-transform infrared spectroscopy (FTIR) results, it was shown that the distribution of the FA and the interaction between FA and cell wall chemical components were influenced by pH values and furfuryl alcohol concentration, which are likely responsible for the color and property changes.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"82 6","pages":"2085 - 2098"},"PeriodicalIF":2.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789251","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Crack size in coating and moisture problems comparing thermally modified and native spruce window frame profiles using hygrothermal simulations 使用湿热模拟比较热改性和原生云杉窗框型材的涂层裂纹尺寸和水分问题

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2024-10-10 DOI: 10.1007/s00107-024-02149-0

Gregor Vidmar, Rožle Repič, Boštjan Lesar, Miha Humar

{"title":"Crack size in coating and moisture problems comparing thermally modified and native spruce window frame profiles using hygrothermal simulations","authors":"Gregor Vidmar, Rožle Repič, Boštjan Lesar, Miha Humar","doi":"10.1007/s00107-024-02149-0","DOIUrl":"10.1007/s00107-024-02149-0","url":null,"abstract":"<div><p>Fungal growth and degradation of wood may be caused by damage in the surface coating. The larger the cracks, the greater in principle the possibility of moisture-induced problems. Measuring basic unknown material parameters and employing hygrothermal simulations, the suitability and the maximum acceptable vertical crack size in the surface coating for a given bottom window profile made of thermally modified (TM) spruce(wood) with that made of native spruce were compared for location Ljubljana. Validation with the field test data was the second objective of the respective research. The average calculated maximum moisture content in TM spruce is about 4% (kg/kg) lower than that of native spruce. The 3 mm wide crack in the surface coating of a window frame made of native spruce is of the highest concern, whereas a 9 mm wide crack in the coating of a TM spruce profile is still acceptable. As far as moisture content is concerned in our study the TM spruce window frames were proved to be significantly more suitable for installation than the corresponding frames made of native Norway spruce. It was shown that isopleth, VTT and biohygrothermal models for mould growth do not properly capture the comparison between both materials, mainly because they classify both in the same material class/substrate category and they do not consider the material moisture content.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"82 6","pages":"2109 - 2119"},"PeriodicalIF":2.4,"publicationDate":"2024-10-10","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-024-02149-0.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789252","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Structural health monitoring of glulam structures: analysis of durability and damage mechanisms 胶合层结构的结构健康监测：耐久性和损伤机制分析

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2024-10-05 DOI: 10.1007/s00107-024-02140-9

Guilhem Greffier, Luis Espinosa, Marianne Perrin, Florent Eyma

{"title":"Structural health monitoring of glulam structures: analysis of durability and damage mechanisms","authors":"Guilhem Greffier, Luis Espinosa, Marianne Perrin, Florent Eyma","doi":"10.1007/s00107-024-02140-9","DOIUrl":"10.1007/s00107-024-02140-9","url":null,"abstract":"<div><p>In today’s environmental context, the use of glulam or Glued Laminated Timber (GLT) as an alternative to conventional building materials could reduce the carbon footprint of engineering structures. However, this material is sensitive to outdoor exposure with moisture content variations inducing internal stresses and cracks and high moisture content increasing the risks of decay. This study therefore focuses on the development of a protocol to evaluate the effect of climatic conditions on the mechanical performance of the material. For this purpose, GLT samples were equipped with embedded sensors. Moisture and deformation sensors can accurately track wet-dry (W/D) cycles and their effects on deformation at adhesive joints. Samples are stored outdoors and mechanical tests are carried out after 6 months of aging. The results show an average reduction in flexural strength of about 10% compared to unaged specimens. Shear tests on the adhesive joints show a decrease in strength of more than 20%. The study of the fracture mechanisms also indicates a link between the type of fracture and the aging conditions of the specimens. These tests also validated a monitoring protocol that will allow, in the long term, to evaluate the impact of these cycles on the mechanical performance of GLT.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"82 6","pages":"2047 - 2063"},"PeriodicalIF":2.4,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-024-02140-9.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789292","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Alternated cross-laminated timber (aCLT) panels: development and mechanical characterization 交替交叉层压木材（aCLT）板：发展和力学特性

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2024-10-05 DOI: 10.1007/s00107-024-02142-7

P. Santos, L. Cardoso, A. M. P. G. Dias

{"title":"Alternated cross-laminated timber (aCLT) panels: development and mechanical characterization","authors":"P. Santos, L. Cardoso, A. M. P. G. Dias","doi":"10.1007/s00107-024-02142-7","DOIUrl":"10.1007/s00107-024-02142-7","url":null,"abstract":"<div><p>A novel type of wood-based panel for structural applications is presented. Such panel named as alternated cross-laminated timber (aCLT) is based on the cross-laminated timber (CLT) panel concept but with a modified internal architecture, in which the cross-layers are replaced by hybrid layers composed of the traditional cross-lamellas alternated with in-line lamellas—as in glued laminated timber (GLT). Such modification aims to improve stiffness and strength in the main direction of the panel in comparison to the traditional CLT concept. To study the referred panel concept and its behavior, a series of panel stripes specimens (beams) of the new panel concept, as well as of CLT and GLT, were produced with 3 and 5 layers. An experimental campaign was performed to determine: (i) the Young`s modulus of the lamellas; (ii) the shear modulus and strength of the cross/hybrid layers of the panels and; (iii) the force <i>vs.</i> deflection of the beams in bending for the determination of bending and shear stiffness and strength. The data obtained in (i) and (ii) was inputted into a developed finite element (FE) model and the results from (iii) were used to validate the models. The FE model was later used to compare the performance of CLT and aCLT of equivalent thickness for a practical case. The results revealed a slight reduction in deflection (between 2 and 11%) and normal stress (1–7%) and a more substantial reduction in shear stress (between 28 and 94%) against the CLT solutions.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"82 6","pages":"2065 - 2083"},"PeriodicalIF":2.4,"publicationDate":"2024-10-05","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-024-02142-7.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789291","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Developing polylactic acid (PLA)-based medium-density fiberboard: investigating three key manufacturing factors and their impact on physical and mechanical properties 聚乳酸（PLA）基中密度纤维板的研制：研究了制造中密度纤维板的三个关键因素及其对其物理力学性能的影响

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2024-09-23 DOI: 10.1007/s00107-024-02129-4

Balazs Bencsik, Levente Denes, Mariann Kollar, Tamas Szabo

{"title":"Developing polylactic acid (PLA)-based medium-density fiberboard: investigating three key manufacturing factors and their impact on physical and mechanical properties","authors":"Balazs Bencsik, Levente Denes, Mariann Kollar, Tamas Szabo","doi":"10.1007/s00107-024-02129-4","DOIUrl":"10.1007/s00107-024-02129-4","url":null,"abstract":"<div><p>The effect of particle size, weight% of polylactic-acid (PLA) powder, and clamping pressure on the physical and mechanical properties of medium-density fiberboard (MDF) manufactured from thermomechanical pulp were studied using the Taguchi experimental design method. According to the L9 type Taguchi experimental design array, the impact of the three factors was examined at three levels, with the target density of the MDF set at 750 kg/m³. The 4 mm thick MDF panels were prepared by applying pressure in the range of 4, 6, and 8 N/mm<sup>2</sup>, using powdered PLA with particle sizes of ⌀<0.1, 0.1<⌀<0.25, or 0.315<⌀<0.4 mm, at weight percentages of 10, 20, and 30. The results indicated that the optimal setup for achieving the highest modulus of rupture (MOR), modulus of elasticity (MOE), and the lowest thickness swelling (TS) was using 30% PLA (by weight%) with particle sizes between 0.1 and 0.25 mm, and applying a clamping pressure of 6 N/mm<sup>2</sup>. Applying the optimal factor setups and increasing the density to 840 kg/m³ resulted in an average MOR of 21.4 N/mm<sup>2</sup>, MOE of 8003 N/mm<sup>2</sup>, IB of 0.46 N/mm<sup>2</sup>, and a TS of 49.4% after 24 hours. The validation board’s dynamic mechanical analysis (DMA) graphs showed that the glass transition temperature (T<sub>g</sub>) of the PLA + fiber composite increased compared to the cold crystallized pure PLA, and a steep drop in storage modulus (E’) couldn’t be observed in the initial rubbery region. The absence of a steep drop in storage modulus (E’) in the initial rubbery region suggests that adding fibers enhances the material’s ability to withstand higher temperatures before transitioning to a rubbery state.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"82 6","pages":"2029 - 2045"},"PeriodicalIF":2.4,"publicationDate":"2024-09-23","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142789234","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0

Understanding the adhesion performance of glued laminated timber manufactured with Australian softwood and high-density hardwood species 了解使用澳大利亚软木和高密度硬木树种制造的胶合层压木材的粘合性能

IF 2.4 3区农林科学

European Journal of Wood and Wood Products Pub Date : 2024-09-13 DOI: 10.1007/s00107-024-02138-3

A. Faircloth, B. P. Gilbert, C. Kumar, W. Leggate, R. L. McGavin

{"title":"Understanding the adhesion performance of glued laminated timber manufactured with Australian softwood and high-density hardwood species","authors":"A. Faircloth, B. P. Gilbert, C. Kumar, W. Leggate, R. L. McGavin","doi":"10.1007/s00107-024-02138-3","DOIUrl":"10.1007/s00107-024-02138-3","url":null,"abstract":"<div><p>To be commercialised, glued laminated timber must typically conform to a strict bond integrity assessment. While the associated testing protocols vary slightly from standard to standard, the general method consists of a series of swelling (water immersion) and shrinkage (drying) cycles. The approach is independent of the species and adhesive type. Those cycles strain the gluelines to a level depending on the species’ moisture uptake, timber dimensional movement and modulus of elasticity, as well as adhesive layer elasticity. High density and high modulus of elasticity materials frequently fail within the glueline regions rather than within the timber and therefore fail the bond integrity assessment. To better understand the mechanisms that lead to glueline failure, glulam samples were manufactured using three prominent Australian commercial timbers of various densities (Radiata pine—<i>Pinus radiata</i>, Southern pine—<i>Pinus caribaea/Pinus elliottii</i>, and Spotted gum—<i>Corymbia citriodora</i>) and two structural adhesive types (resorcinol formaldehyde and polyurethane). Using advanced measurement techniques (digital image correlation and strain gauges), the response of the different species and adhesive types to moisture swelling and shrinkage, as well as times at which glueline separation occurs, were captured. A relationship was observed between moisture uptake and delamination percentages with spotted gum producing significantly higher levels of delamination and significantly lower moisture uptake values, compared to both Radiata pine and Southern pine. While the polyurethane glued samples on average produced higher levels of delamination, the digital image correlation data indicates that the time at which this delamination occurs is later than the samples glued with resorcinol formaldehyde.</p></div>","PeriodicalId":550,"journal":{"name":"European Journal of Wood and Wood Products","volume":"82 6","pages":"2013 - 2028"},"PeriodicalIF":2.4,"publicationDate":"2024-09-13","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"https://link.springer.com/content/pdf/10.1007/s00107-024-02138-3.pdf","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"142206375","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":3,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":"OA","EPubDate":null,"PubModel":null,"JCR":null,"JCRName":null,"Score":null,"Total":0}

引用次数: 0