Editorial Material
Chemistry, Multidisciplinary
Alexandra D. Easley, Alison Mangano, Brett P. Fors
Summary: Polyurethanes (PUs) are synthesized materials commonly made from isocyanates, diols, and water. Water plays a crucial role in the production of carbon dioxide (CO2) used for self-blowing of the foams. To address safety concerns, researchers have explored alternative chemistries, and cyclic carbonate systems have shown great promise. In a recent study, Bourguignon, Grignard, and Detrembleur demonstrated that a cyclic carbonate and diamine system can generate CO2 for self-blowing through hydrolysis, allowing for a wide range of physical and thermo-mechanical properties. This work represents a significant advancement towards safer and more environmentally friendly PUs.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Article
Chemistry, Multidisciplinary
Maxime Bourguignon, Bruno Grignard, Christophe Detrembleur
Summary: This article reports a simple and scalable process for preparing non-isocyanate polyurethane (NIPU) foams. The process replaces the previous use of toxic isocyanate-based chemistry with a more sustainable variant that forms CO2 through the hydrolysis of a comonomer. The process allows for the production of greener polyurethane foams using readily available low-cost starting materials.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2022)
Article
Polymer Science
Clara Amezua-Arranz, Mercedes Santiago-Calvo, Miguel-Angel Rodriguez-Perez
Summary: This study synthesizes isocyanate-free polyurethane foams from cyclic carbonates and diamines using sodium bicarbonate as the foaming agent, and achieves densities as low as 142 kg/m3.
EUROPEAN POLYMER JOURNAL
(2023)
Article
Engineering, Chemical
Sayli Devdas Bote, Ramani Narayan
Summary: Soybean meal is a byproduct of soybean processing that can be used to synthesize biobased polyols for the production of rigid polyurethane foams. The newly synthesized polyols exhibit excellent properties and are suitable for various industrial applications.
INDUSTRIAL & ENGINEERING CHEMISTRY RESEARCH
(2021)
Article
Polymer Science
Guilhem Coste, Dimitri Berne, Vincent Ladmiral, Claire Negrell, Sylvain Caillol
Summary: Polyurethane foams, currently dominating the global foam market, face the challenge of using toxic isocyanate reagents. A new tetrafunctional cyclic carbonate, TC6, has been synthesized, leading to the successful production of polyhydroxyurethane (PHU) foams. These PHU foams exhibit interesting properties and have the potential to be used in applications such as seating or insulation mattresses.
EUROPEAN POLYMER JOURNAL
(2022)
Article
Chemistry, Multidisciplinary
Dominik Wolosz, Aleksandra Marta Fage, Pawel Grzegorz Parzuchowski, Aleksandra Swiderska, Robert Bruell
Summary: This paper presents an innovative approach to avoiding toxic components in the preparation of rheology modifiers by obtaining a new class of water-soluble isocyanate-free hydrophobically modified ethoxylated poly(hydroxy-urethane)s (IFHEURs). The obtained IFHEURs have structural flexibility, allowing for tuneable thickening performance in aqueous solutions, which opens up new perspectives for eco-friendly coatings and paints.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Valentina Sessini, Cuong Nguyen Thai, Harvey Amorin, Ricardo Jimenez, Cedric Samuel, Sylvain Caillol, Jerome Cornil, Sebastien Hoyas, Sophie Barrau, Philippe Dubois, Philippe Leclere, Jean-Marie Raquez
Summary: This study demonstrates that fully biobased non-isocyanate polyurethane materials can serve as a sustainable platform for producing highly interesting piezoelectric materials. The results show that the ferroelectric properties of these materials depend on the nanophase separation inside the materials.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2021)
Article
Polymer Science
Dominik Wolosz, Pawel G. Parzuchowski, Karolina Rolinska
Summary: This work presents an eco-friendly synthetic pathway for the production of non-isocyanate poly(carbonate-urethane)s (NIPCUs) from carbon dioxide and organic carbonates. The obtained NIPCUs exhibit comparable mechanical properties to conventional polyurethane elastomers. The study also investigates the influence of polyurethane structure on the mechanical and thermal properties of the obtained polymers.
Article
Chemistry, Multidisciplinary
Jitpisut Poolwong, Vatcharaporn Aomchad, Silvano Del Gobbo, Arjan W. Kleij, Valerio D'Elia
Summary: The synthesis of glycerol carbonate (GC) can be promoted by bio-based and readily available organic salts, leading to quantitative GC formation under atmospheric CO2 pressure and moderate temperatures. Sodium citrate, as the most efficient catalyst, plays a crucial role in GC formation through its hydrogen bond donor and weakly basic sites. Furthermore, metal alginates can also be used as recoverable bio-based catalysts for similar reactions.
Review
Chemistry, Multidisciplinary
Rebecca Mort, Keith Vorst, Greg Curtzwiler, Shan Jiang
Summary: Research on biobased foams has shown promising thermal and mechanical properties compared to traditional foams. The trend is towards fully biobased and compostable foams, with partially biobased polyurethane foams currently being the most consistent performers. Challenges include model application and validation of performance in real biobased systems.
Article
Metallurgy & Metallurgical Engineering
M. Heidari Ghaleh, N. Ehsani, H. R. Baharvandi
Summary: Closed-cell A356 aluminum foams were successfully produced by adding calcium carbonate as a foaming agent, resulting in relative density ranges of 0.12-0.44 and cell sizes of 1.5-3.1 mm. The foaming stabilizing mechanism was investigated, along with the effects of foaming conditions on the resulting foam samples, such as the amount of foaming agent and casting holding time.
INTERNATIONAL JOURNAL OF METALCASTING
(2021)
Article
Chemistry, Multidisciplinary
Dinesh Kumar Chelike, Senthil A. Gurusamy A. Thangavelu
Summary: A facile synthesis of isocyanate free polyurethanes (PU) was achieved by reacting biodegradable cyclic carbonate with sustainable diamines via chemical modification. The resulting PU films showed high onset degradation temperature and were further characterized and studied for various properties and behaviors.
Article
Chemistry, Physical
Selim Kim, Dong Geun Kim, Minu Kim, Ki Jong Kim, Jae Min Lee, Joon Hyuk Lee, Hae-Won Cheong, Hyoung Seop Kim, Sunghak Lee
Summary: Various Al foams have been developed to meet the increasing demands for impact reduction in military, automotive, civil-engineering, and aerospace applications. Evaluating their energy-absorbing performance is challenging due to the rapid closure of interior pores. This study modified a split Hopkinson pressure bar (SHPB) to reliably evaluate the energy-absorbing performance of open- and closed-cell Al foams using the incident wave alone.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Green & Sustainable Science & Technology
Wissem Sahmim, Febrina Dellarose Boer, Hubert Chapuis, Firmin Obounou-Akong, Antonio Pizzi, Philippe Gerardin, Christine Gerardin-Charbonnier
Summary: This study examines the feasibility of synthesizing non-isocyanate urethane using cyclic carbonate modified catechin and amine. The results show that carbamate can be successfully obtained through a four-step synthesis, opening up possibilities for further research on the synthesis of polyurethanes using catechin and condensed tannins as starting materials.
JOURNAL OF RENEWABLE MATERIALS
(2022)
Article
Chemistry, Multidisciplinary
Nicholas D. J. Yates, Saeed Akkad, Amanda Noble, Tessa Keenan, Natasha E. Hatton, Nathalie Signoret, Martin A. Fascione
Summary: The bioconjugation of proteins to small molecules is crucial for studying biological mechanisms and developing biomaterials. This paper introduces a new method called spontaneous coupling via aldol ligation of proteins (SCALP), which is a catalyst-free, green, and site-selective protein ligation method. It demonstrates the utility of this method in targeting prostate cancer cells with functionalized nanobodies.
Article
Forestry
Xinyi Chen, Antonio Pizzi, Bengang Zhang, Xiaojian Zhou, Emmanuel Fredon, Christine Gerardin, Guanben Du
Summary: A new bio-sourced adhesive system based on urea crosslinked glyoxalated lignin and dialdehyde starch was developed, with acceptable results for producing particleboard according to European standards. Chemical crosslinking using partially bio-sourced glycerol glycidyl ether (GDE) improved bonding strength of the resins formed, with main crosslinking sites also determined.
WOOD SCIENCE AND TECHNOLOGY
(2022)
Article
Materials Science, Paper & Wood
Benoit Ndiwe, Noel Konai, Antonio Pizzi, Lionel Karga, Maxime D. Kaoutoing, Raidandi Danwe
Summary: This study utilizes bio-hardeners derived from plant exudates in the Far North region of Cameroon to manufacture particleboard, resulting in improved properties compared to synthetic hardeners.
WOOD MATERIAL SCIENCE & ENGINEERING
(2023)
Article
Nanoscience & Nanotechnology
Chunyin Li, Hong Lei, Zhigang Wu, Xuedong Xi, Guanben Du, Antonio Pizzi
Summary: A fully biomass-based citric acid-glucose (CAG) adhesive with excellent bonding strength and water resistance was successfully developed in this study. The properties of the adhesive were tuned by adjusting the reaction conditions. The CAG adhesive showed superior performance compared to traditional urea-formaldehyde (UF) resin adhesives in the application of plywood.
ACS APPLIED MATERIALS & INTERFACES
(2022)
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
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)
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
Chemistry, Multidisciplinary
Zakaria Laggoun, Amel Khalfaoui, Abderrezzaq Benalia, Amira Fadia Ghomrani, Raouf Bouchareb, Asma Mahfouf, Antonio Pizzi, Antonio Panico, Kerroum Derbal
Summary: This work optimizes the conditions for the removal of a textile dye by biosorption on seafood waste and demonstrates the acceptability of the quadratic regression model. The study also reveals the thermodynamic properties and adsorption mechanism of the process.
APPLIED SCIENCES-BASEL
(2023)
