Article
Materials Science, Multidisciplinary
Nathanael Chaussoy, Damien Brandt, Jean-Francois Gerard
Summary: Phenolic resins, widely used polymers, have an annual production of about 12 million tons. However, their synthesis requires highly toxic formaldehyde and phenol. This study proposes the substitution of these toxic compounds with less toxic phenolic analogues. The resulting resins show excellent thermomechanical properties and can be easily synthesized and scaled up.
ACS APPLIED POLYMER MATERIALS
(2023)
Review
Environmental Sciences
Amir Hossein Khoshakhlagh, Mahdiyeh Mohammadzadeh, Seyede Somayeh Manafi, Fatemeh Yousefian, Agnieszka Gruszecka-Kosowska
Summary: This study conducted a systematic review and found that there is potential health risk for employees due to occupational exposure to formaldehyde, with the highest concentrations observed in waterpipe cafes and anatomy and pathology laboratories. Carcinogenic and non-carcinogenic risks were reported to be exceeded in a significant percentage of the investigated studies. Therefore, targeted strategies should be adopted to reduce or eliminate exposure to formaldehyde from occupational usage.
ENVIRONMENTAL POLLUTION
(2023)
Article
Polymer Science
Menglu Dai, Jing Sun, Qiang Fang
Summary: A new fluorinated cross-linked polystyrene derived from vanillin, a renewable biomass, has been developed. It exhibits high thermostability, good dielectric properties, and hydrophobicity, making it suitable as a low dielectric encapsulation material for high frequency communication. This study provides a facile and efficient method for the conversion of renewable biomass into high-performance materials.
Article
Green & Sustainable Science & Technology
Orhan Kelleci, Suheyla Esin Koksal, Deniz Aydemir, Semih Sancar
Summary: This study aims to improve the efficiency of glue usage and reduce formaldehyde emission by foaming urea formaldehyde (UF). Egg white and blood flour were used as foaming agents to increase the resin volume. The foaming process improved the mechanical properties of the PBs and reduced formaldehyde emissions.
JOURNAL OF CLEANER PRODUCTION
(2022)
Article
Chemistry, Multidisciplinary
Ziteng Zhang, Jianyu Zhang, Zuping Xiong, Bo Chu, Chengjian Zhang, Jing Zhi Sun, Haoke Zhang, Xing-Hong Zhang, Ben Zhong Tang
Summary: This work presents the design and synthesis of six phenolic resins with clusteroluminescence (CL) property. By increasing the number of through-space interactions (TSIs) units and introducing electron-donating/-withdrawing groups, these non-conjugated polymers achieve near-infrared (NIR) emission with high absolute quantum yield. Through experiments and theoretical analysis, the crucial roles of through-space locally excited state and through-space charge transfer state in achieving CL from non-conjugated polymers are revealed.
ANGEWANDTE CHEMIE-INTERNATIONAL EDITION
(2023)
Review
Biochemistry & Molecular Biology
Justyna Chrobak, Jolanta Ilowska, Anna Chrobok
Summary: This review discusses modern alternatives for the production of wood-based panels, focusing on substitutes for formaldehyde in resin production and novel hardeners for formaldehyde-free wood adhesives. The use of formaldehyde substitutes can eliminate the problem of free formaldehyde emission. However, these substitutes may have lower reactivity and affect the mechanical and strength properties of the panels. Further research and development are needed for complete replacement of formaldehyde.
Article
Materials Science, Multidisciplinary
David Rubes, Jaromir Vinklarek, Lubos Prokupek, Stepan Podzimek, Jan Honzicek
Summary: A series of polyester prepolymers were synthesized from itaconic acid, phthalic anhydride, propane-1,2-diol, and diethylene glycol. The use of itaconic acid as a source of unsaturation enabled the replacement of styrene reactive diluent by methyl methacrylate. The curing of a model polyester resin at room temperature was initiated by butanone peroxide in combination with various cobalt-, iron-, and vanadium-based accelerators. Experimental data indicates that this styrene- and cobalt-free system is very promising for reducing health and ecological issues associated with unsaturated polyester resins.
JOURNAL OF MATERIALS SCIENCE
(2023)
Review
Multidisciplinary Sciences
Thomas M. Bennett, John F. Allan, Jennifer A. Garden, Michael P. Shaver
Summary: Insulating materials are crucial for energy efficiency in buildings, and mineral wool insulation (MWI) is the most commonly used type in Europe. However, the traditional phenol-formaldehyde-urea (PFU) binder used in MWI has raised concerns due to formaldehyde emissions. This review explores alternative binder technologies that aim to minimize or eliminate formaldehyde emissions.
Article
Engineering, Chemical
Vidula Ramdugwar, Hubert Fernandes, Pradeep Gadekar
Summary: The objective of this study was to identify and analyze suitable scavengers for reducing the free formaldehyde content in phenolic resins. The addition of sodium sulphite and sodium metabisulphite as scavengers was found to not affect the performance of adhesives.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2022)
Article
Materials Science, Characterization & Testing
Hui Wang, Hongyan Wang, Jingjing Liao, Xiaojian Zhou, Guanben Du
Summary: In order to improve the performance of low-molar-ratio urea-formaldehyde (UF) resin in wood bonding, a branched polymer-based functional agent (BPG) was synthesized as a crosslinker. The BPG-cured UF resin showed a lower curing temperature, faster curing rate, and superior wet bonding strength compared to traditional curing agents. Furthermore, the UF/BPG mixture exhibited excellent thermostability and compact microstructure, indicating improved bonding strength and water resistance.
Article
Engineering, Chemical
Eko Setio Wibowo, Muhammad Adly Rahandi Lubis, Byung-Dae Park
Summary: The study demonstrated that in-situ modified UF resins with CNFs showed superior performance compared to neat UF resins, with shorter gelation time, faster curing rates, higher TSS, and lower FE values. UF resins modified with CNFs synthesized using Synth 2 exhibited better performance than Synth 1.
JOURNAL OF ADHESION SCIENCE AND TECHNOLOGY
(2021)
Article
Engineering, Chemical
Peyman Pouresmaeel Selakjani, Ali Dorieh, Antonio Pizzi, Mohammad Hassan Shahavi, Amir Hasankhah, Sara Shekarsaraee, Marzieh Ashouri, Sogand Ghafari Movahed, Mohadese Niksefat Abatari
Summary: This study successfully reduced the free formaldehyde emission of medium density fiberboard by adding phenolic compounds to urea-formaldehyde polymer, resulting in improved water resistance and lower thickness swelling, thus showing potential benefits for the production industry.
INTERNATIONAL JOURNAL OF ADHESION AND ADHESIVES
(2021)
Article
Biochemistry & Molecular Biology
Adel Abdelrazek Abdelazim Mohdaly, Mohamed H. H. Roby, Seham Ahmed Rabea Sultan, Eberhard Gross, Iryna Smetanska
Summary: The study investigated the use of extracts from potato peels, olive leaves, lemon peels, and pomegranate peels as soaking pre-treatment to reduce acrylamide formation in fried potato chips. Lemon peels and potato peels showed strong antioxidant activity and were effective in reducing acrylamide levels.
Article
Chemistry, Applied
Kaiyan Yang, Xiaowu Gong, Lanli Bai, Yun Zhang, Na Zhou
Summary: This study aims to prepare a low-formaldehyde and environmentally friendly glucose-lignin-based phenolic resin. The authors directly used lignin to substitute formaldehyde to prepare lignin-based phenolic resin with urea as formaldehyde absorbent. The introduction of biobased glucose improved the performance of the wood adhesive and reduced free phenol content and curing temperature.
PIGMENT & RESIN TECHNOLOGY
(2023)
Article
Food Science & Technology
Jose A. Figueira, Priscilla Porto-Figueira, Jorge A. M. Pereira, Jose S. Camara
Summary: Uveira-da-serra is a native blueberry from Madeira Island, Portugal, with a rich composition of free low-molecular weight phenolic compounds. Its high antioxidant potential is beneficial for health, making it a useful bioresource with potential applications in the food, pharmaceutical, and cosmetic industries.
FOOD RESEARCH INTERNATIONAL
(2021)
Article
Chemistry, Organic
Damien Brandt, Aurelia Dittoo, Veronique Bellosta, Janine Cossy
Article
Chemistry, Organic
Aurelia Dittoo, Damien Brandt, Veronique Bellosta, Janine Cossy
Article
Chemistry, Organic
Damien Brandt, Veronique Bellosta, Janine Cossy
Article
Chemistry, Multidisciplinary
Gabriel Perli, Luke Wylie, Baris Demir, Jean-Francois Gerard, Agilio A. H. Padua, Margarida Costa Gomes, Jannick Duchet-Rumeau, Jerome Baudoux, Sebastien Livi
Summary: This study focuses on the design and development of multifunctional epoxy thermosets using new degradable epoxy monomers. Through rational design and synthesis, six different network structures were formed by curing the monomers with primary amine hardeners. The resulting epoxy-amine networks exhibited high thermal stability, excellent mechanical properties, shape memory behavior, wide range of glass transition temperatures, and complete degradability. Molecular dynamics simulations were also utilized to predict the properties of the networks.
ACS SUSTAINABLE CHEMISTRY & ENGINEERING
(2022)
Article
Chemistry, Multidisciplinary
Noureddine Boumdouha, Jannick Duchet-Rumeau, Jean-Francois Gerard, Djalel Eddine Tria, Amar Oukara
Summary: Based on existing models, researchers have manufactured six types of nonlethal projectiles and evaluated their performance and safety through experiments and analysis. They used CAD modeling and 3D printing techniques to create the projectiles and holders, and scanning electron microscopy to observe the characteristics of mineral fillers. The findings contribute to understanding the impact force and safety of nonlethal projectiles.
Article
Materials Science, Multidisciplinary
Ting Shi, Seibastien Livi, Jannick Duchet-Rumeau, Jean-Francois Gerard
Summary: An extrinsic self-healing mechanism based on microencapsulated healing agents was developed to produce self-healable thermosetting materials. Polymerizable diepoxidized ionic liquid monomer microcapsules were synthesized and incorporated into epoxy-amine networks to investigate their effects on morphology, thermal behavior, and mechanical properties. The self-healing performances of the networks were observed before and after curing process, showing promising results.
ACS APPLIED POLYMER MATERIALS
(2023)
Article
Polymer Science
Nathanael Chaussoy, Damien Brandt, Jean-Francois Gerad
Summary: Composite materials based on high-performance fibers and polymer matrices are widely used in the aerospace industry, thanks to their outstanding mechanical and thermal properties. However, finding temperature-resistant organic polymers is challenging. Phthalonitriles have recently gained attention due to their excellent thermostability and high char yield. In this study, liquid resins with high thermostability were successfully synthesized at room temperature, using a combination of phenolic and self-crosslinkable phthalonitrile chemistries.
POLYMER DEGRADATION AND STABILITY
(2023)
Article
Materials Science, Multidisciplinary
Nathanael Chaussoy, Damien Brandt, Jean-Francois Gerard
Summary: Phenolic resins, widely used polymers, have an annual production of about 12 million tons. However, their synthesis requires highly toxic formaldehyde and phenol. This study proposes the substitution of these toxic compounds with less toxic phenolic analogues. The resulting resins show excellent thermomechanical properties and can be easily synthesized and scaled up.
ACS APPLIED POLYMER MATERIALS
(2023)