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
Saman Ghahri, Byung-Dae Park
Summary: This study presents a novel method of producing entirely bio-based and nontoxic wood adhesives by self-crosslinking of industrial hardwood kraft lignin (HKL). After acetone fractionation and glyoxalation, the hardwood kraft lignin exhibited improved crosslinking capacity and adhesion performance, making it a promising option for developing lignin-based bio-adhesives for wood bonding.
INDUSTRIAL CROPS AND PRODUCTS
(2023)
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
Polymer Science
Xianfeng Mo, Xinhao Zhang, Lu Fang, Yu Zhang
Summary: Thermoplastic adhesives can effectively solve the formaldehyde emission issue in the wood-based panel industry. Compared to conventional urea-formaldehyde resin-bonded panels, thermoplastic-bonded wood-based panels exhibit higher mechanical properties, better water resistance, and improved machinability.
Article
Chemistry, Multidisciplinary
Changle Jiang, Jianli Hu, Chao Zhang, Gangarao Hota, Jingxin Wang, Novruz G. Akhmedov
Summary: This paper reports the potential of lignin oligomers prepared with base-catalyzed depolymerization as phenolic blends for enhancing the tensile shear strength of soy protein adhesive. The study used kraft lignin as a model for lignin waste feedstock and tested the resulting lignin oligomers as phenolic blends for soy protein adhesive on plywood samples. The results showed that lignin oligomers prepared at 170°C enhanced bonding strength by 13.2%, indicating their promise for the soy protein adhesive system.
REACTION CHEMISTRY & ENGINEERING
(2023)
Article
Agricultural Engineering
Maryam Arefmanesh, Saeid Nikafshar, Emma R. Master, Mojgan Nejad
Summary: This study used acetone fractionation to increase the homogeneity of softwood kraft lignin and develop new products. The acetone soluble and insoluble fractions were analyzed for their elemental composition, chemical structure, and thermal properties. The acetone soluble fraction showed an increase of 24% in phenolic hydroxyl content. It was used to replace phenol in phenolic resin, resulting in a higher adhesion strength. The acetone insoluble fraction, on the other hand, was used to replace petroleum-based polyol in polyurethane resin, with the help of a bio-derived solvent. Tailoring the structure of kraft lignin through solvent fractionation allowed for the replacement of two major petrochemicals in resin formulations, which would otherwise be challenging due to the heterogeneity of softwood kraft lignin.
INDUSTRIAL CROPS AND PRODUCTS
(2022)
Article
Chemistry, Multidisciplinary
Guangxu Yang, Zhenggang Gong, Bei Zhou, Xiaolin Luo, Jing Liu, Guanben Du, Chengke Zhao, Li Shuai
Summary: This study presents a two-step strategy to produce lignin-based wood adhesives using industrially available technical lignins. The lignin-formaldehyde adhesive synthesized through hydrodeoxygenation and acid-mediated methylolation exhibits lighter color and superior adhesion performance compared to traditional LPF resins.
Article
Agricultural Engineering
Justin J. Bernhardt, Bjoern Roessiger, Thomas Hahn, Daniela Pufky-Heinrich
Summary: This study investigated the continuous hydrothermal base catalyzed depolymerization of kraft lignin to phenolic oligomers, establishing a model equation and proposing a three-lump kinetic model to determine rate constants of the reaction. It was found that activation energies for depolymerization varied based on sodium hydroxide concentration, highlighting the importance of temperature and NaOH concentration in the process.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Materials Science, Multidisciplinary
Archana Bansode, Lorena Alexandra Portilla Villarreal, Yuyang Wang, Osei Asafu-Adjaye, Brian K. Via, Ramsis Farag, Iris Beatriz Vega Erramuspe, Maria L. Auad
Summary: In this study, biobased novolacs phenol-formaldehyde (BNPF) resins were developed by partially replacing petroleum-derived phenol and formaldehyde with lignin derived from kraft biorefinery and modified kraft biorefinery-derived lignin, respectively. The lignin was chemically modified through the periodate oxidation process, and a series of BNPF resins were synthesized by replacing phenol and formaldehyde with lignin and oxidized lignin. The NPF resins exhibited the formation of methylene linkages in the phenolic rings. The bonding performance tests showed that BNPF resin adhesives have high adhesion strengths (>0.7 MPa). This research provides a promising perspective for utilizing natural polymers such as lignin for the synthesis of biobased wood adhesives.
ACS APPLIED POLYMER MATERIALS
(2023)
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
Polymer Science
Apri Heri Iswanto, Muhammad Adly Rahandi Lubis, Jajang Sutiawan, Syeed Saifulazry Osman Al-Edrus, Seng Hua Lee, Petar Antov, Lubos Kristak, Roman Reh, Efri Mardawati, Adi Santoso, Sukma Surya Kusumah
Summary: The depletion of natural resources and environmental concerns have led to the development of bio-based non-isocyanate polyurethane (NIPU) resins as sustainable substitutes for harmful isocyanates in the manufacturing of polyurethanes. This review provides a comprehensive analysis of the progress made in utilizing lignin and tannin to produce high-performance NIPU resins for wood adhesive applications. Studies have shown that NIPUs derived from lignin and tannin exhibit enhanced mechanical properties, decreased curing temperatures, and are devoid of isocyanates, making them promising alternatives for wood adhesives.
Article
Chemistry, Multidisciplinary
Pedro L. de Hoyos-Martinez, Hamed Issaoui, Rene Herrera, Jalel Labidi, Fatima Charrier-El Bouhtoury
Summary: Different formulations of phenolic resins based on lignin and tannins, with the addition of inorganic nanoparticles, were studied as biobased fireproofing coatings for wood. The structures and thermal properties of the coatings were characterized, and their fireproofing performance was evaluated against commercial coatings, showing significant reduction in heat release, improved wood integrity protection, and delayed flame propagation. The biobased coatings performed better on beechwood compared to maritime pinewood, with formulations R-A and R-B achieving results comparable to the commercial fireproofing coatings.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Review
Energy & Fuels
Zhiwen Gao, Xueling Lang, Shuang Chen, Chen Zhao
Summary: The use of biomass in phenolic resin can improve performance, reduce costs, and protect the environment. Modification or depolymerization of lignin to synthesize high-performance biophenolic resin polymer materials is an effective way to achieve these goals. Various lignin modification methods for preparing thermosetting or thermoplastic phenolic resins are compared, with future research directions in biomass-based phenolic resins being discussed.
Article
Engineering, Mechanical
A. Aniol, T. Grosse, F. Fischer, S. Bohm
Summary: The relevance of sustainable structural materials in automotive components is increasing, with wood as a sustainable material showing promising potential due to its good mechanical properties. By combining wood with modified epoxy adhesives, there can be a significant improvement in mechanical properties and manufacturing time for structural components in the automotive industry.
PROCEEDINGS OF THE INSTITUTION OF MECHANICAL ENGINEERS PART D-JOURNAL OF AUTOMOBILE ENGINEERING
(2021)
Article
Engineering, Chemical
Ren Wei, Yuya Sakai
Summary: Botanical concrete is a sustainable material that can recycle concrete and wood waste without cement. This study aims to improve its water resistance by changing forming conditions and adding hydrophobic kraft lignin. Experimental results show that adding up to 20% kraft lignin can significantly enhance the performance of botanical concrete.
Article
Engineering, Chemical
Fengze Dai, Yinjie Dai, Shu Huang, Xijun Hua
Summary: In this study, laser surface texturing (LST) was performed on the surface of 6061 aluminum alloy using a pulsed laser, and then SHF-2D zinc epoxy coating (SP) was applied. The results show that LST can effectively increase the adhesion strength, and the pattern of the spatter produced by laser irradiation determines the adhesion strength.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Leonardo Lamberti Miotti, Andressa Cargnelutti Follak, Luciano de Souza Goncalves, Eliseu Aldrighi Munchow, Alexandre Henrique Susin
Summary: The purpose of this in vitro study was to evaluate the immediate and long-term bond strength of self-adhesive and conventional resin luting agents with a new restorative material to dentin. The results showed that the conventional dual resin cement had better bond strength to dentin when using the etch-and-rinse strategy.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Ivan Argatov, Xiaoqing Jin, Gennady Mishuris
Summary: This study presents a fitting-based analysis of experimental force/displacement curves to propose an explanation method for adhesive contact based on Griffith's energy balance model, which is applicable for finite deformations between a polymer brush grafted onto a rigid substrate and an AFM probe.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Mitsuhiro Gonda, Toru Utsunomiya, Takashi Ichii, Hiroyuki Sugimura
Summary: The technique of surface photoactivation using VUV light has been used for adhesive-free bonding of POM plates. The POM surfaces were modified through VUV light irradiation, resulting in the formation of oxygen-containing functionalities. The bonds formed through thermocompression and the mechanical properties of the bonding interface were different from the bulk POM.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Review
Engineering, Chemical
Renally Bezerra Wanderley Lima, Juan Vitor Costa Leite, Joao Vitor do Nascimento Santos, Laryssa Mylenna Madruga Barbosa, Hermano Nobrega Macedo Neto, Joao Gabriel Regis da Silva, Isis de Araujo Ferreira Muniz, Debora e Silva Campos, Grace Mendonca De Souza
Summary: This systematic review compared the bond strength between zirconia and resin cements when different surface treatments were used. The findings indicated that tribochemical silica-coating/silane-based treatments are more effective than alumina blasting/zirconia primers in enhancing the bond strength to zirconia.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Review
Engineering, Chemical
Luisa Valente Gotardo Lara Alves, Nathalia Mancioppi Cerqueira, Amanda Pelegrin Candemil, Andre Luis Faria-e-Silva, Manoel Damiao Sousa-Neto, Aline Evangelista Souza-Gabriel
Summary: This systematic review and meta-analysis evaluated the effect of chitosan on resin-dentin bond strength. The results showed that chitosan can improve the immediate bond strength of self-etching adhesives and the long-term bond strength of etch-and-rinse adhesives.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Retraction
Engineering, Chemical
M. Soliman, S. Saadaldin, A. Aldegheishem, A. Abdull, S. Al-Shma, E. Eldwakhly
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Sabrina Mahnel, Franz Bannert, Johannes Zimmermann, Sergio Grunder, Martin Demmig, Silvia Lomolino, Guido Grundmeier
Summary: These studies present a new method for analyzing the maximum open time of cold curing adhesives, and investigate the curing reaction and bonding behavior of two cold curing polyurethane adhesives. The results show that the main problem for industrial applications is dimensional accuracy, and the manual spatula test is a suitable method for production environment with good reproducibility.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
J. Vanerek, R. Balkova, M. Smak, A. Betak, Z. Vejpustek
Summary: The paper focuses on the behavior of glued joints of wooden sections at elevated temperatures. The study found that the curing of PRF and PUR adhesives was insufficient at high temperatures. At 140℃, there was no significant reduction in strength for all tested adhesives, but a longer duration (1 day) led to a decrease in tensile shear strength. At 170℃, PRF and EPI showed a significant drop in strength, while PUR lost its strength completely after longer duration exposures.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Ryota Aoki, Toshiki Takamizawa, Yuta Kasahara, Munenori Yokoyama, Shunichi Suda, Rei Muto, Atsushi Kamimoto, Masashi Miyazaki
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Review
Engineering, Chemical
Isabel V. Souza, Nathalia S. Finck, Camila S. Rodrigues, Rafael R. Moraes
Summary: This systematic review summarizes the evidence from in vitro studies on the effect of different glass ceramic processing methods on the bond strength to resin-based luting agents. The findings suggest that ceramics processed by CAD-CAM method generally have higher bond strength to resin-based materials compared to heat-pressing or layering processing methods.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Chenglong Zhang, Huiqi Shao, Yue Zhang, Nanliang Chen, Jinhua Jiang
Summary: This study investigates the potential application of adhesive bonding techniques for connecting envelope composites in airships. Experimental results show that the mechanical performance of adhesively bonded joints is significantly influenced by structural parameters, while simulation results reveal the mechanism of the negative effect of stiffness mismatch on the failure strength of adhesively bonded joints.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Xinyi Chen, Hisham Essawy, Haizhu Wu, Antonio Pizzi, Emmanuel Fredon, Christine Gerardin, Guanben Du, Xiaojian Zhou
Summary: In this study, the performance of tannin-based non-isocyanate polyurethane adhesive was improved by using branched polyethylenimine/tannin mixtures instead of toxic hexamethylenediamine. By adding appropriate amounts of tannin/PEI mixtures, the viscosity and thermal stability of the adhesive were enhanced, and it achieved similar bonding performance to the traditional adhesive.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
M. K. Saravanan, A. V. S. Siva Prasad, Raguraman Munusamy
Summary: Polyurea coated structures have garnered significant attention due to their various applications. However, there is a lack of research on delamination in polyurea coated structures. This study aims to develop a rate-dependent traction-separation model and a numerical modeling framework to simulate the rate-dependent delamination process. The proposed approach successfully reproduced the fracture mechanisms and aided in understanding the interaction between different regions during delamination.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
Article
Engineering, Chemical
Jihyeon Hur, Minseok Kim, Jun Tae Kim, Eunyeong Yang, Seung Sang Hwang, Jongok Won
Summary: A multinetwork structured urushi organogel was created by using Fe3+ ions for both chemical and physical crosslinking. This gel exhibits reversible adhesive properties and consistent tensile strength, providing potential applications for natural urushi.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2024)
