Article
Polymer Science
Chen Ding, Ning Li, Zhikang Chen, Yufei Zhang
Summary: In this study, no-formaldehyde wood adhesives were prepared using kraft lignin and epichlorohydrin (ECH). The physicochemical properties of the adhesives were improved by modifying the lignin with glyoxal and blending it with ECH. The adhesive showed comparable water resistance and shear strength to phenol-formaldehyde resins, indicating the potential of lignin as a replacement for formaldehyde-based adhesives.
Review
Chemistry, Multidisciplinary
Manggar Arum Aristri, Muhammad Adly Rahandi Lubis, Sumit Manohar Yadav, Petar Antov, Antonios N. Papadopoulos, Antonio Pizzi, Widya Fatriasari, Maya Ismayati, Apri Heri Iswanto
Summary: This review article summarizes the potential of using renewable resources like lignin and tannin for preparing non-isocyanate polyurethane (NIPU) wood adhesives. Research has shown that NIPUs based on lignin and tannin offer advantages such as improved strength, lower curing temperatures, shorter pressing times, and being isocyanate-free.
APPLIED SCIENCES-BASEL
(2021)
Review
Agricultural Engineering
Caoxing Huang, Zhenwen Peng, Jiongjiong Li, Xiaona Li, Xiao Jiang, Youming Dong
Summary: Adhesives traditionally made from fossil-based polymers have issues of toxicity, environmental pollution, and non-renewable raw materials. Therefore, research on environmentally friendly and renewable adhesives from bio-based materials has gained attention. Lignin, a natural and renewable phenolic polymer with various functional groups, has been extensively studied for its exploitation. Despite some progress, developing lignin-based adhesives with performances surpassing fossil-based adhesives remains challenging.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Agricultural Engineering
Katerina Hruzova, Leonidas Matsakas, Ulrika Rova, Paul Christakopoulos
Summary: The study evaluated the effect of hot water extraction followed by organosolv pretreatment on the enzymatic hydrolysability of spruce bark biomass. The cellulose content of pretreated biomass reached 49.6% w/w, with final hydrolysis yield up to 70.1% and release of 7.8 g/L of glucose. These results represent a significant improvement over existing steam pretreatment methods.
BIORESOURCE TECHNOLOGY
(2021)
Article
Forestry
Hamed Younesi-Kordkheili, Antonio Pizzi, Saeed Erfani, Mojtaba Amiri
Summary: This work presents the development of a cold-setting plywood adhesive using polyvinyl alcohol, maleated nanolignin, and hexamine. The study shows that the modification of nanolignin with maleic anhydride improves the gelation time, viscosity, and solids content of the resin, while reducing the curing temperature. The use of maleated nanolignin in the adhesive results in higher mechanical strength and dimensional stability.
EUROPEAN JOURNAL OF WOOD AND WOOD PRODUCTS
(2023)
Article
Polymer Science
Qianyu Zhang, Gaoxiang Xu, Antonio Pizzi, Hong Lei, Xuedong Xi, Guanben Du
Summary: Glyoxal is a promising substitute for formaldehyde in wood bonding. However, the performance of glyoxal-based resin is not satisfactory, particularly in terms of water resistance. This study presents a method to prepare an eco-friendly glyoxal-based adhesive with excellent bonding performance. The adhesive, named CHG resin, is synthesized by reacting citric acid and hexamethylene diamine with glyoxal. The plywood bonded with CHG resin shows superior dry and wet shear strength, surpassing the standard requirements. It also maintains high strength even after immersion in hot water. Consequently, CHG resin has the potential to replace UF and MUF adhesives for wood composites in industrial applications.
Article
Chemistry, Multidisciplinary
Mohsen Siahkamari, Sasha Emmanuel, David B. Hodge, Mojgan Nejad
Summary: In this study, a biobased phenolic adhesive was developed by replacing petroleum-based phenol and formaldehyde with unmodified corn stover biorefinery lignin and glyoxal. The synthesized lignin-glyoxal resin showed higher molecular weight than the starting lignin, indicating successful integration. The adhesive demonstrated high dry adhesion strength and stability in room temperature water.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Polymer Science
Robinson Rozas, Nicolas Aspee, Camila Negrete-Vergara, Diego Venegas-Yazigi, Marlen Gutierrez-Cutino, Sergio A. Moya, Cesar Zuniga, Plinio Cantero-Lopez, Jorge Luengo, Raul Gonzalez, Julio Romero, Mauricio Yanez-S
Summary: The present study aimed to investigate the impact of a solvent/water mixture on the structural characteristics of extracted lignin from Eucalyptus nitens, and to establish a connection between the functional groups and interunit linkages in lignin and the distribution of phenolic compounds obtained after alkaline oxidation.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Plant Sciences
Yulia A. Gismatulina, Vera V. Budaeva, Aleksey N. Kortusov, Ekaterina Kashcheyeva, Evgenia K. Gladysheva, Galina F. Mironova, Ekaterina A. Skiba, Nadezhda A. Shavyrkina, Anna A. Korchagina, Vladimir N. Zolotukhin, Gennady Sakovich
Summary: Miscanthus x giganteus is a lignocellulosic feedstock with high biomass productivity and low environmental impact. The chemical composition of Miscanthus is influenced by the habitat and environment, with the stem part being richer in cellulose. These findings have significant implications for the industrial conversion of Miscanthus into cellulosic products worldwide.
Article
Polymer Science
Sofia Goncalves, Joao Ferra, Nadia Paiva, Jorge Martins, Luisa H. Carvalho, Fernao D. Magalhaes
Summary: Lignin is a widely available renewable source of phenolic compounds, with only a small percentage used for value-added products, primarily in the form of lignosulphonates. Industrial attempts to use lignin in wood adhesives face challenges due to the low number of reactive sites in its aromatic ring and high polydispersity.
Article
Agricultural Engineering
Hana Auer Malinska, Martin Vanek, Diana Nebeska, David Subrt, Marian Brestic, Josef Trogl
Summary: The study aimed to explore simple ways to enhance the adaptability and productivity of Miscanthus x giganteus energy grass in response to climate changes. By applying specific doses of vitamins, metals, and different cultivation conditions, changes in plant physiology were studied, focusing on photosynthesis efficiency and cell wall composition. The results showed that physical and chemical primers can lead to significant physiological changes in Miscanthus x giganteus plants, affecting photosynthetic processes and lignin synthesis.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Engineering, Chemical
Norizaty Irman, Nur Hanis Abd Latif, Nicolas Brosse, Francois Gambier, Firda Aulya Syamani, M. Hazwan Hussin
Summary: This study investigates the possibility of using tannin as a formaldehyde-free wood adhesive. Tannins extracted from Mangrove bark were modified into tanninacetone-phenol-glyoxal (TAPG) and tannin-methanol-phenol-glyoxal (TMPG) adhesives. The properties of the extracted tannins were characterized using various techniques, and the physico-chemical and mechanical properties of TAPG and TMPG adhesives were determined. Results show that both TAPG and TMPG adhesives have superior tensile strength compared to the control adhesive containing formaldehyde.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2022)
Article
Chemistry, Applied
Dayong Ding, Jianquan Hu, Lanfeng Hui, Zhong Liu, Lupeng Shao
Summary: This study presents a two-step process for producing cellulosic residual, furfural, and lignin directly from Miscanthus x giganteus, offering a systematic and energy efficient approach for maximizing biomass utilization.
CARBOHYDRATE POLYMERS
(2021)
Article
Environmental Sciences
Anna Grzegorska, Natalia Czaplicka, Jacek Antonkiewicz, Piotr Rybarczyk, Agnieszka Baran, Krzysztof Dobrzynski, Dawid Zabrocki, Andrzej Rogala
Summary: Phytoremediation has gained attention as a cost-effective, highly efficient, environmentally friendly, and green approach to remove metals, including heavy metals, from contaminated soils. This study evaluated the potential of Miscanthus x giganteus for the removal of ten microelements and heavy metals from contaminated soil. The results showed that plants cultivated in soil with soil improver exhibited the highest yield, and the addition of soil improver increased the uptake of certain heavy metals by Miscanthus x giganteus.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2023)
Article
Forestry
Fanjun Yu, Ziyuan You, Yushen Ma, Haoyang Liu, Yonggui Wang, Zefang Xiao, Yanjun Xie
Summary: This study proposes a novel, environmentally friendly biomass-based modification technique using carboxymethylation-activated alkali lignin (CAAL) and glutaraldehyde (GA) to enhance the physical and mechanical properties of poplar and fir wood. The water-soluble CAAL was prepared through modification of alkali lignin with sodium chloroacetate. The successful preparation of CAAL was demonstrated by various techniques, and the structural changes were analyzed. The modified wood samples were investigated for various characteristics, and it was found that the CAAL/GA hybrid modifier significantly enhanced the properties of the wood.
WOOD SCIENCE AND TECHNOLOGY
(2023)
Article
Materials Science, Characterization & Testing
Haizhu Wu, Dongsen Liao, Xinyi Chen, Guanben Du, Taohong Li, Hisham Essawy, Antonio Pizzi, Xiaojian Zhou
Summary: In recent years, concerns over the shortcomings of conventional resin-bonded products have led researchers to develop a new generation of adhesives derived from natural renewable biomass resources. In this study, a novel epoxidized tannin-based non-isocyanate polyurea adhesive was prepared and its structure, molecular weight, and thermal degradation behavior were investigated. The mechanical properties and water resistance of the produced plywood were evaluated, showing that the adhesive possesses ideal bonding strength and excellent water resistance, making it suitable for potential applications under harsh conditions.
Article
Polymer Science
Bengang Zhang, Mathieu Petrissans, Anelie Petrissans, Antonio Pizzi, Baptiste Colin
Summary: The hydrophobicity of heat-treated beech and fir wood at different temperatures (120℃ to 300℃) was defined using the Whilhelmy method, wood thermal properties (TG/DTG), infrared spectroscopy, etc. The hydrophobic character obtained by the heat treatment remains constant even when exposed to wet conditions for 1 week. Heat-induced wood hydrophobation is mainly caused by furanic moieties produced from heat-induced degradation of hemicelluloses, which is triggered by the acid environment generated by the hydrolysis of hemicellulose acetyl groups.
Article
Engineering, Environmental
Xinyi Chen, Zhengyong Yang, Fuxian Yang, Jun Zhang, Antonio Pizzi, Hisham Essawy, Guanben Du, Xiaojian Zhou
Summary: This study proposes a convenient preparation method for wood adhesives derived from sustainable hydrolyzed wheat gluten protein (HWG) and furfuryl alcohol (FA). The interaction mechanism between HWG and FA is revealed through FT-IR, 13C NMR, and MALDI-TOF spectra analyses. The obtained wood adhesives show excellent bonding performance and retardation of water intrusion, surpassing the requirements for exterior-grade plywood type I according to China National Standard (GB/T 9846-2015, >= 0.7 MPa).
CHEMICAL ENGINEERING JOURNAL
(2023)
Review
Engineering, Chemical
Younes Shirmohammadli, Antonio Pizzi, Gary M. Raftery, Ashkan Hashemi
Summary: Wood is a sustainable and versatile construction material with a lower carbon footprint. One-component polyurethane (1C PUR) adhesives have gained popularity in the engineered wood products (EWPs) industry due to their formaldehyde-free nature, ability to bond wood at high moisture content, and invisible glue lines. However, they may have some drawbacks in certain environments, but overall, they exhibit good performance in bonding wood and composites.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Engineering, Chemical
Jean Jalin Eyinga Biwole, Achille Bernard Biwole, Joseph Zobo Mfomo, Antonio Pizzi, Cesar Segovia, Dieudonne Abessolo, Benoit Ndiwe, Evariste Fedoung Fongnzossie, Atangana Ateba, Pierre-Jean Meausoone
Summary: The objective of this study was to determine the factors affecting the cold water resistance of Iroko wood welded joints. The welding parameters considered were grain direction, welding time, pre-drilled-hole depth, and rotation speed. The pull-out resistance of the joints immersed in distilled water at different temperatures for various time periods was also tested. The results showed that the maximum welding temperatures and pull-out strength varied depending on the welding parameters and wood orientation. Some welded joints exhibited good water stability due to the presence of certain compounds that were insensitive to water. Overall, Iroko wood showed promise for wood welding technique.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2023)
Article
Biochemistry & Molecular Biology
Rim Gheribi, Yassine Taleb, Louise Perrin, Cesar Segovia, Nicolas Brosse, Stephane Desobry
Summary: This study aimed to develop novel chitosan-based packaging materials reinforced with hemp fibers. The addition of hemp fibers significantly improved the mechanical properties of chitosan composites, but had little effect on oxygen barrier properties. These improved biocomposites can be used in food packaging to promote sustainable development and a circular economy.
Article
Polymer Science
Bengang Zhang, Xinyi Chen, Antonio Pizzi, Mathieu Petrissans, Stephane Dumarcay, Anelie Petrissans, Xiaojian Zhou, Guanben Du, Baptiste Colin, Xuedong Xi
Summary: Condensed tannin copolymerized with hyperbranched tris(2-aminoethyl)amine-urea to form a particleboard thermosetting adhesive without aldehydes, meeting the relevant standards for internal bond strength. The adhesive can cure effectively at a low temperature of 180 degrees C and has zero formaldehyde emission. The tannin acts as a cross-linking agent, enhancing the overall bonding performance. The chemical analysis reveals that substitution and rare reaction occur between tannin and the amine and amide groups.
Article
Polymer Science
Pierre Delliere, Antonio Pizzi, Nathanael Guigo
Summary: Poly(furfuryl alcohol) is a thermostable biobased thermoset that can be modified through the opening of the furan ring and derivatization. This study compares the structural differences between PFA prepared in neat conditions and PFA prepared in aqueous conditions. The results show that the aqueous PFA has a more heterogeneous structure with the presence of ketonic derivatives, while the neat PFA exhibits terminal lactones instead of aldehydes.
Article
Environmental Sciences
Abderrezzaq Benalia, Walid Chaibraa, Sara Djeghar, Kerroum Derbal, Amel Khalfaoui, Asma Mahfouf, Raouf Bouchareb, Antonio Panico, Antonio Pizzi
Summary: This study reveals the potential of proteins extracted from oak leaves to treat drinking water and industrial oily wastewater. The analysis of oak leaves confirmed the presence of proteins acting as bio-coagulants. The experimental design identified the optimal operating parameters. The study demonstrated the effectiveness of oak leaves proteins in reducing turbidity and pollutants in both drinking water and industrial oily wastewater.
Article
Materials Science, Paper & Wood
Benoit Ndiwe, Noel Konai, Achille Desire Omgba Betene, Antonio Pizzi, Achille Gnassiri Wedaina, Fotio Nzogning, Armel Mewoli, Michel Mbere Taoga, Duval Tekam, Honore Bayangbe Kikmo, Paul Kah
Summary: In this study, the fibre of Grewia bicolor bark was extracted and used as reinforcement for fibreboards. Two extraction methods were used, biological retting and chemical extraction using a sodium hydroxide solution. The properties of the fibres were characterized using various methods, including ATF FTIR, mechanical tests, and thermogravimetric analysis. The results showed that the extracted fibres had a theoretical density of 1.30 g/cm³ and a 5% decrease in porosity from root to leaves. SEM analysis revealed the presence of fibrils with a honeycomb cell-like structure. The use of NaOH in the extraction method removed hemicellulose, pectin, wax, and lignin from the fibres. The untreated and treated fibres had average elasticity moduli of E = 35.18 ± 2.25 MPa and E = 33.47 ± 2.35 MPa, respectively, and the internal bond strength of the fibreboards was 0.98 ± 0.05 MPa and 1.06 ± 0.02 MPa.
INTERNATIONAL WOOD PRODUCTS JOURNAL
(2023)
Article
Agricultural Engineering
Roxane Limousin, Feriel Guendoul, Canelle Vibert, Karina Antoun, Cesar Segovia, Isabelle Ziegler-Devin, Nicolas Brosse
Summary: The valorization of hop stem, a co-product of hop cultivation, was investigated in this study. Steam explosion was found to be an efficient defibration method for producing high-quality fibers. It was also discovered that hop single cell fiber has characteristics similar to hemp and can be used for producing adhesive-free panels with good mechanical properties.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
Article
Chemistry, Multidisciplinary
Zhao Zhang, Arnaud Besserer, Christophe Rose, Nicolas Brosse, Vincent Terrasson, Erwann Guenin
Summary: Palladium (Pd) nanoparticles were synthesized in aqueous solution and immobilized in beech wood blocks as Pd@wood catalysts. The wood blocks were treated to improve their internal structure and provide attachment sites for the Pd nanoparticles. The catalytic performance of the Pd@wood catalyst was investigated and showed high activity in two model reactions. Furthermore, the integration of Pd nanoparticles into wood blocks by microwave-assisted synthesis is an effective method for wood functionalization, benefiting metal nanoparticle catalysis in fine chemical synthesis and industrial wastewater treatment.
Review
Forestry
Dominika Janiszewska-Latterini, Antonio Pizzi
Summary: This review aims to investigate the application of liquefied wood products in reducing the environmental impact of particleboard manufacturing. The findings reveal that the application of liquefied wood products does not significantly affect the mechanical properties and formaldehyde content of particleboards, and different feedstock types show similar effects on board properties. However, there is a limited number of studies in this field, and further research is needed to determine the outcomes and benefits of using liquefied wood products on an industrial scale.
CURRENT FORESTRY REPORTS
(2023)
Article
Materials Science, Paper & Wood
Godwin Fonyuy Banyuy, Antonio Pizzi, Jean Gaston Tamba, Achille Bernard Biwole, Benoit Ndiwe, Jean Jalin Eyinga Biwole, Fopah-Lele Armand, Evariste Fongnzossie Fedoung, Joseph Zobo Mfomo
Summary: This study aimed to determine the quantity, nature, and role of extracts during the sorption behavior of two Central African hardwood species. The results showed that acetone extracts had a significant effect on the hygroscopic nature of wood.
WOOD MATERIAL SCIENCE & ENGINEERING
(2023)
Article
Multidisciplinary Sciences
Armel Mewoli, Cesar Segovia, Anny Geraldo Soppie, Fabien Betene Ebanda, Abel Emmanuel Njom, Atangana Ateba, Nicolas Brosse
Summary: In order to increase biodiversity in natural plant fiber nonwovens, new sources of natural fibers must be discovered. This study aimed to compare different types of nonwovens based on commercial bast fibers with those based on the new Triumfetta cordifolia (TCF) fiber. The results showed that TCFs are competitive in terms of mechanical performance and availability compared to flax and hemp fibers. These findings suggest that non-woven fabrics based on TCFs from the tropical African region could create new value-added products and benefit these countries economically and ecologically.
