Journal of Wood Chemistry and Technology最新文献_第7页

Chemical and morphological modification of softwood and hardwood surfaces by an oxygen glow discharge plasma 用氧辉光放电等离子体对软木和硬木表面进行化学和形态修饰

IF 2 4区农林科学

Journal of Wood Chemistry and Technology Pub Date : 2022-08-25 DOI: 10.1080/02773813.2022.2113539

A. Jamali, P. Evans

引用次数: 0

Preparation of superhydrophobic coatings with alkyltrichlorosilanes for Pinus kesiya wood 烷基三氯硅烷制备克夏松木超疏水涂料

IF 2 4区农林科学

Journal of Wood Chemistry and Technology Pub Date : 2022-08-25 DOI: 10.1080/02773813.2022.2114498

Yulan Jian, Shaowei Lu, Wei-Che Tang, Mingjun Shao, Fuhua San, Hui Wan, Linkun Xie

{"title":"Preparation of superhydrophobic coatings with alkyltrichlorosilanes for Pinus kesiya wood","authors":"Yulan Jian, Shaowei Lu, Wei-Che Tang, Mingjun Shao, Fuhua San, Hui Wan, Linkun Xie","doi":"10.1080/02773813.2022.2114498","DOIUrl":"https://doi.org/10.1080/02773813.2022.2114498","url":null,"abstract":"Abstract To explore the typical alkyltrichlorosilane and optimal volume ratio of the alkyltrichlorosilane-toluene solutions for preparing superhydrophobic Pinus kesiya wood, four alkyltrichlorosilanes: methyltrichlorosilane (MTCS), butyltrichlorosilane (BTCS), dodecyltrichlorosilane (DTCS), and octadecyltrichlorosilane (OTCS) were each used to modify the wood samples at different volume ratios of alkyltrichlorosilane-toluene solutions. The Pinus kesiya wood specimens were immersed in the solutions to fabricate superhydrophobic coatings on the wood surface. The wettability of the modified wood surfaces was characterized by water contact angle and water uptake values. The chemical composition of the wood samples was analyzed using X-ray photoelectron spectroscopy (XPS) and attenuated total reflection-Fourier transform infrared spectroscopy (ATR-FTIR), and the surface morphology of the modified wood samples was observed using scanning electron microscopy (SEM). The result showed that all types of alkyltrichlorosilane-modified wood changed from hydrophilic to hydrophobic. The wood specimens had the highest water contact angle of 151.8 ± 0.4° and lowest water uptake of 18 ± 0.6 wt.% when 0.25 vol.% MTCS and 0.25 vol.% OTCS solutions were applied, respectively.","PeriodicalId":17493,"journal":{"name":"Journal of Wood Chemistry and Technology","volume":"42 1","pages":"409 - 418"},"PeriodicalIF":2.0,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"44667147","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 2

Chemical analysis of CCA-C treated wood residues, charcoal and wood tar CCA-C处理的木材残留物、木炭和木焦油的化学分析

IF 2 4区农林科学

Journal of Wood Chemistry and Technology Pub Date : 2022-08-25 DOI: 10.1080/02773813.2022.2114497

Allan Ewerton Rezende Euflosino, J. Paes, Arlon Bastos da Rosa, Marina Donária Chaves Arantes, F. G. Gonçalves, Alexandre Florian da Costa, Fernanda Dalfiôr Maffioletti

{"title":"Chemical analysis of CCA-C treated wood residues, charcoal and wood tar","authors":"Allan Ewerton Rezende Euflosino, J. Paes, Arlon Bastos da Rosa, Marina Donária Chaves Arantes, F. G. Gonçalves, Alexandre Florian da Costa, Fernanda Dalfiôr Maffioletti","doi":"10.1080/02773813.2022.2114497","DOIUrl":"https://doi.org/10.1080/02773813.2022.2114497","url":null,"abstract":"Abstract After its useful life, treated wood residues can be toxic, and its disposal, often incorrect, and several countries have researched measures to reuse or recycle it. This study evaluated the potential for pre-extraction of chromated copper arsenate (CCA-C) treated wood for combustion, either direct landfilling or agricultural use (organic compost or biochar). Treated wood residues were transformed into 0.5 × 3 × 3 cm chips (tangential × radial × longitudinal). A portion of these were crushed in a Wiley mill and the other, charred. Charcoal, charring by-products, and sawdust were evaluated for the amount of CCA-C present in them. Sawdust and crushed charcoal were extracted by 0.1 mol L−1 sulfuric and acetic acid, and sodium and potassium hydroxide solutions for two, four, or six hours. The material was, then, washed and the amount of CCA-C analyzed. Sulfuric acid extraction for six-hour obtained the best results. The methodology used extracted more preservative from wood than charcoal and part of the oxides were released into the atmosphere during the carbonization of treated wood, since the wood tar obtained CCA-C. The results obtained for both wood and charcoal were insufficient to render the residues safe, after removing the CCA-C components. After extraction, we considered the resultant wood and charcoal effluents hazardous, demanding greater attention in their disposal.","PeriodicalId":17493,"journal":{"name":"Journal of Wood Chemistry and Technology","volume":"42 1","pages":"395 - 407"},"PeriodicalIF":2.0,"publicationDate":"2022-08-25","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42651094","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 1

Revisiting the condensation reaction of lignin in alkaline pulping with quantitativity. Part 2: evaluation of self-condensation of vanillyl alcohol compared with its condensation with creosol under soda cooking conditions 定量考察了木质素在碱性制浆中的缩合反应。第2部分：在苏打烹饪条件下，香草醛醇自缩合与杂酚油缩合的比较评价

IF 2 4区农林科学

Journal of Wood Chemistry and Technology Pub Date : 2022-07-15 DOI: 10.1080/02773813.2022.2096636

T. Komatsu, T. Yokoyama

{"title":"Revisiting the condensation reaction of lignin in alkaline pulping with quantitativity. Part 2: evaluation of self-condensation of vanillyl alcohol compared with its condensation with creosol under soda cooking conditions","authors":"T. Komatsu, T. Yokoyama","doi":"10.1080/02773813.2022.2096636","DOIUrl":"https://doi.org/10.1080/02773813.2022.2096636","url":null,"abstract":"Abstract Condensation of lignin is believed to interfere with delignification in alkaline pulping processes. The lack of clear evidence motivated us to quantitatively revisit it. This article evaluates the self-condensation of 4-hydroxymethyl-2-methoxyphenol (vanillyl alcohol, Va) in the simplest model system using Va and 2-methoxy-4-methylphenol (creosol, Cr) under the same soda cooking conditions employed in our previous paper. Dimeric and trimeric self-condensation products of Va consisting of the α-5 bond (VaVa, 2-(4-hydroxy-3-methoxybenzyl)-4-hydroxymethyl-6-methoxyphenol), α-1 bond (VaVa’, bis(4-hydroxy-3-methoxyphenyl)methane), and α-5 & α-1 bonds (VaVaVa’, 2,4-bis(4-hydroxy-3-methoxy-benzyl)-6-methoxyphenol) were identified and quantified. The formation rate of VaVa from Va was suggested to be about twice of that of VaVa’, and to be similar to that of the condensation product between the α-carbon of Va and the aromatic C5-carbon of Cr (VaCr), which was identified in the first paper. Among all these detected condensation products, only VaVa that can be converted to the corresponding quinone methide (QM) readily underwent further condensation to be VaVaVa’ and others. Only the monomers (Va and Cr) possessing the small steric factors condense with electrophilic QM’s as nucleophiles. These results suggest that condensation of lignin in actual soda cooking processes, with steric factors much larger than the model system, progresses much less frequently than generally believed.","PeriodicalId":17493,"journal":{"name":"Journal of Wood Chemistry and Technology","volume":"42 1","pages":"361 - 370"},"PeriodicalIF":2.0,"publicationDate":"2022-07-15","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42431755","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 3

Preparation of transparent wood containing carbon dots for application in the field of white-LED 含碳点透明木材在白光led领域应用的制备

IF 2 4区农林科学

Journal of Wood Chemistry and Technology Pub Date : 2022-07-12 DOI: 10.1080/02773813.2022.2085749

Cong Zhang, Tao Lin, X. Yin, Xiaoyu Wu, Xiaoyao Wei

引用次数: 6

Prediction of the extractives content of Eucalyptus globulus wood using NIR-based PLS-R models. Influence of spectral range and preprocessing on the percentage of outliers detected 基于nir的PLS-R模型预测蓝桉木材提取物含量。光谱范围和预处理对检测到的异常值百分比的影响

IF 2 4区农林科学

Journal of Wood Chemistry and Technology Pub Date : 2022-07-08 DOI: 10.1080/02773813.2022.2096072

R. Simões, A. Alves, P. Pathauer, D. A. Palazzini, S. N. Marcuci-Poltri, J. Rodrigues

{"title":"Prediction of the extractives content of Eucalyptus globulus wood using NIR-based PLS-R models. Influence of spectral range and preprocessing on the percentage of outliers detected","authors":"R. Simões, A. Alves, P. Pathauer, D. A. Palazzini, S. N. Marcuci-Poltri, J. Rodrigues","doi":"10.1080/02773813.2022.2096072","DOIUrl":"https://doi.org/10.1080/02773813.2022.2096072","url":null,"abstract":"Abstract Eucalyptus globulus is an important pulpwood source due to favorable wood characteristics, including low extractive content. However, there is significant tree-to-tree variation that can be exploited in breeding. This requires screening a large number of samples, which NIR and PLS-R make possible. Models are typically developed for a specific set of samples prepared in the same way. The question is: how well these models predict samples that are different from the ones used in the model. Models developed to determine the extractive content of Eucalyptus globulus wood from Australia were used to E. globulus wood from Argentina, which differed in age and sample preparation. The main difference between spectra of the two origins was in the OH combination band, despite the fact that samples were dried identically. Due to this difference, models that included the O-H band assigned above 73% of the spectra as outliers regardless of preprocessing, whereas models that did not include the O-H band assigned fewer spectra as outliers. The differences in the OH band were attributed primarily to differences in particle size and extractive content, rather than to differences in humidity content. However, all models predict similar results for all samples, including outliers.","PeriodicalId":17493,"journal":{"name":"Journal of Wood Chemistry and Technology","volume":"42 1","pages":"352 - 360"},"PeriodicalIF":2.0,"publicationDate":"2022-07-08","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42673899","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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

Properties and durability of wood impregnated with high melting point polyethylene wax for outdoor use 户外用高熔点聚乙烯蜡浸渍木材的性能和耐久性

IF 2 4区农林科学

Journal of Wood Chemistry and Technology Pub Date : 2022-07-06 DOI: 10.1080/02773813.2022.2095404

Lu Zhang, Xiaojun Yang, Zehua Chen, Haoran Dong, Y. Tan, Xinchun Bai

{"title":"Properties and durability of wood impregnated with high melting point polyethylene wax for outdoor use","authors":"Lu Zhang, Xiaojun Yang, Zehua Chen, Haoran Dong, Y. Tan, Xinchun Bai","doi":"10.1080/02773813.2022.2095404","DOIUrl":"https://doi.org/10.1080/02773813.2022.2095404","url":null,"abstract":"Abstract In order to develop a new wood product suitable for outdoor applications, a high melting point polyethylene wax was used for high-pressure impregnation treatment of wood. Properties of impregnated wood were studied. Wax in molten state was stable with low viscosity, good fluidity, and easily penetrate into the wood under high pressure. Full-cell process included vacuum (-0.06 MPa for 30 min), high-pressure impregnation (0.75 MPa for 3 h) and pressure release (30 min). Wax contents of treated lodgepole pine (Pinus contorta Douglas ex Loudon.) and eucalyptus (Eucalyptus saligna) were 0.205 g/cm3 and 0.321 g/cm3, respectively. Cell gaps and cell cavities of wood were filled with polyethylene wax. Nanoindentation tests showed that longitudinal mechanical properties of wood cell walls were weakened after impregnation. After a 3 h high-pressure impregnation, hardness of lodgepole pine wood cell walls was reduced by 35.1%, and the modulus of elasticity was reduced by 4.9%. Treated wood had a much lower water absorption and swelling rate than untreated wood, its weathering resistance as well as insect resistance were better.","PeriodicalId":17493,"journal":{"name":"Journal of Wood Chemistry and Technology","volume":"42 1","pages":"342 - 351"},"PeriodicalIF":2.0,"publicationDate":"2022-07-06","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49024132","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 3

Understanding the effects of ionic liquids and antisolvent addition on the extraction and recovery of Pinus radiata bark components 了解离子液体和抗溶剂添加对辐射松皮成分提取和回收的影响

IF 2 4区农林科学

Journal of Wood Chemistry and Technology Pub Date : 2022-06-24 DOI: 10.1080/02773813.2022.2088793

N. Brar, W. Grigsby, S. Hill, L. Raymond, C. C. Weber

引用次数: 0

Comparative metabolomic study of three clones of Eucommia ulmoides wood 杜仲三个无性系的代谢组学比较研究

IF 2 4区农林科学

Journal of Wood Chemistry and Technology Pub Date : 2022-06-20 DOI: 10.1080/02773813.2022.2088794

Shuan Ren, Manrong Zha, Youji Li, Ke Song, Jian He, Shima Liu, Jie Guo, Kegang Li, Xianwu Zhou

{"title":"Comparative metabolomic study of three clones of Eucommia ulmoides wood","authors":"Shuan Ren, Manrong Zha, Youji Li, Ke Song, Jian He, Shima Liu, Jie Guo, Kegang Li, Xianwu Zhou","doi":"10.1080/02773813.2022.2088794","DOIUrl":"https://doi.org/10.1080/02773813.2022.2088794","url":null,"abstract":"Abstract It is important to reveal the differences in the metabolites of different clones of Eucommia wood to explore the beneficial components of Eucommia wood and the selection of Eucommia wood. In this study, an extensive targeted metabolomic analysis was conducted on three different clones of Eucommia wood, Huazhong 12 Eucommia (HZ), Cili Eucommia (CL), and Miye Eucommia (MY), using UPLC-EI-MS/MS analysis. The results show that the Eucommia wood contains phenolic acids, lipids, amino acids and derivatives, organic acids, flavonoids, nucleotides and derivatives, terpenoids, lignans and coumarins, alkaloids, tannins, and other classes with a total of 854 metabolites. Among them, HZ and CL, HZ and MY, and MY and CL contain 99, 115, and 154 substantially different metabolites, respectively, enriched in 83, 128, and 199 metabolic pathways, mainly enriched in the metabolic pathways and biosynthesis of secondary metabolites. The metabolites in HZ with a relatively high content were sexangularetin-3-O-glucoside-7-O-rhamnoside, narcissin*, quercetin-3-O-sambubioside*, and quercetin-3-O-apiosyl(1→2)galactoside*; the metabolites in MY with a relatively high content were L-lysine and L-ornithine. The relatively more abundant metabolite in CL is 1,3,5-benzenetriol. The results of the study not only reveal that different clones of Eucommia wood have different metabolite components. This may provide not only different health functions to Eucommia wood, but also theoretical and technical support for the selection and breeding of good Eucommia species for timber and the enhancement of added value.","PeriodicalId":17493,"journal":{"name":"Journal of Wood Chemistry and Technology","volume":"42 1","pages":"318 - 329"},"PeriodicalIF":2.0,"publicationDate":"2022-06-20","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"49500537","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 2

Synergic flame-retardant effect of cellulose nanocrystals and magnesium hydroxide in polyurethane wood coating 纤维素纳米晶与氢氧化镁在聚氨酯木器涂料中的协同阻燃作用

IF 2 4区农林科学

Journal of Wood Chemistry and Technology Pub Date : 2022-06-17 DOI: 10.1080/02773813.2022.2085748

Liangsong Cheng, Shaobo Ren, N. Brosse, Zehui Ju, Suxia Li, Xiaoning Lu

{"title":"Synergic flame-retardant effect of cellulose nanocrystals and magnesium hydroxide in polyurethane wood coating","authors":"Liangsong Cheng, Shaobo Ren, N. Brosse, Zehui Ju, Suxia Li, Xiaoning Lu","doi":"10.1080/02773813.2022.2085748","DOIUrl":"https://doi.org/10.1080/02773813.2022.2085748","url":null,"abstract":"Abstract In this paper, a wood coating based on waterborne polyurethane (WPU)/nano-cellulose crystalline (CNC)/Magnesium hydroxide (MH) was prepared. Efficient dispersion of MH in WPU in presence of 5 wt% of CNCs was observed by biological microscope leading to a material with improved esthetic, thermal and fire-retardant properties and mechanical performance. By thermogravimetric analysis (TG/DTG) and comparison with WPU, the maximum weight loss rate (RTmax) of WPU/CNC/MH coating decreased dramatically from 13.2 to 6.63, and the residue increased sharply from 4.69% to 40.55%. The results of pyrolysis combustion flow calorimeter (PCFC) showed that the flame-retardant performance of the composite coating is also greatly improved, and the peak of heat rate release (pHRR) being reduced from 350 w/g to 121 w/g. When applied to the wood panels, according to the Limiting oxygen index (LOI) experiment, for MH < 40 wt%, the combustibility grade is B2 level (combustible material), whereas for MH > 40 wt% the grade is B1 level (flame retardant material).","PeriodicalId":17493,"journal":{"name":"Journal of Wood Chemistry and Technology","volume":"42 1","pages":"297 - 304"},"PeriodicalIF":2.0,"publicationDate":"2022-06-17","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":null,"resultStr":null,"platform":"Semanticscholar","paperid":"42326869","PeriodicalName":null,"FirstCategoryId":null,"ListUrlMain":null,"RegionNum":4,"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: 3