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
Chemistry, Physical
Adrian Krzysztof Antosik, Karolina Mozelewska, Magdalena Zdanowicz, Konrad Gziut, Piotr Miadlicki
Summary: In this study, organophilized montmorillonites (OMMT) with different quaternary ammonium compounds (QAC) were used as fillers in modified silicone pressure-sensitive adhesives (Si-PSA). The chemical structure of QAC affected the d-spacing of OMMT, as analyzed by TGA and XRD techniques. The new self-adhesive materials based on the prepared Si-PSA compositions with OMMT showed improved thermal resistance up to 225 degrees C.
Article
Agricultural Engineering
Antonio M. Borrero-Lopez, Concepcion Valencia, Gabriela Dominguez, Maria E. Eugenio, Jose M. Franco
Summary: In this study, residual lignins from barley and wheat straws were modified through solid-state fermentation for eco-friendly castor oil-based polyurethane adhesive formulations. The addition of lignin enhanced the viscoelastic properties of the adhesives, with Streptomyces strains further increasing the values of linear viscoelastic functions. Wheat straw lignin-based polyurethane adhesives performed best in metal-textile peeling tests, while barley straw lignin showed superior shear strength in metal-metal and wood-wood joints. Overall, solid-state fermentation with Streptomyces proved to be an effective pretreatment for modifying and improving residual lignin fractions for use as binders in environmentally-friendly polyurethane adhesive formulations.
INDUSTRIAL CROPS AND PRODUCTS
(2021)
Article
Engineering, Environmental
Xinpeng Che, Meiyan Wu, Guang Yu, Chao Liu, Huanfei Xu, Bin Li, Chaoxu Li
Summary: In this study, a novel Janus film with multi-responses to humidity, near-infrared radiation, and electrical stimulation was successfully fabricated as a flexible actuator. The film exhibited excellent mechanical strength and durability, making it a promising candidate for various practical applications.
CHEMICAL ENGINEERING JOURNAL
(2022)
Article
Biochemistry & Molecular Biology
Yanping Hao, Chao Wang, Weikun Jiang, Chang Geun Yoo, Xingxiang Ji, Guihua Yang, Jiachuan Chen, Gaojin Lyu
Summary: In this study, a multifunctional nanocomposite hydrogel was prepared through radical polymerization in a few minutes. The hydrogel exhibited excellent stretchability, fatigue resistance, conductivity, UV resistance, and antibacterial activity, making it suitable for wearable devices and biological electrodes.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2022)
Article
Engineering, Environmental
Yanfan Yang, Hao Zhou, Xiaoqi Chen, Tingting Liu, Yong Zheng, Lin Dai, Chuanling Si
Summary: A polyphenol lignin-based adhesive with high strength, reusability, wide temperature adaptability, and solvent resistance was developed. The adhesive exhibited high strength even in extreme environments, and could be repaired by infrared laser irradiation while retaining a high level of strength.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Chemistry, Multidisciplinary
Feitian Bai, Tengteng Dong, Wei Chen, Jinlong Wang, Xusheng Li
Summary: A strong and water-stable lignin-cellulose composite (LCC) was developed using nanocellulose hybrid lignin complex (CHLC), significantly increasing the dry strength and wet strength compared to a typical lignin-free cellulose sheet. The LCC is an eco-friendly and biodegradable alternative to plastic, providing a solution for the mechanical properties' degradation and uncontrolled deformation challenges in cellulose as a replacement for plastic.
Article
Construction & Building Technology
Meltem Tanguler-Bayramtan, Burhan Alam, Melike Sucu, Tughan Delibas, Ismail Ozgur Yaman
Summary: Cellulose ethers are beneficial in improving the properties of cement-based ceramic adhesives. The combination of different cellulose ethers and cement types affects the performance of the adhesives. Not only the type of cellulose ether, but also the cement type and fineness contribute to the properties of the ceramic adhesives.
MATERIALS AND STRUCTURES
(2022)
Article
Chemistry, Multidisciplinary
Jinsheng Zhao, Xiangyu Li, Yu Tan, Xiaokun Liu, Taiping Lu, Mingxing Shi
Summary: In this study, a smart adhesive with dynamically tunable adhesion is developed using magnetic actuation. The adhesive has two working modes, selective pickup mode and pick-and-place mode, and may be of interest for practical applications demanding highly precise and swiftly controlled movements.
ADVANCED MATERIALS
(2022)
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
Materials Science, Multidisciplinary
Yi Sun Choi, Jihoon Jeon, Soohwan An, Mi Jeong Lee, Seung Yeop Han, Seung-Woo Cho
Summary: The control of bleeding is crucial in surgical treatments and wound healing. A study has developed adhesive hydrogels with high hemostatic ability by functionalizing carboxymethyl cellulose, which can rapidly seal wounds and effectively stop bleeding.
APPLIED MATERIALS TODAY
(2022)
Article
Thermodynamics
Adrian Krzysztof Antosik, Karolina Mozelewska, Marta Piatek-Hnat, Zbigniew Czech, Marcin Bartkowiak
Summary: The purpose of this work was to investigate the impact of kaolin on single-sided tapes' self-adhesive properties. Through testing and explanation, single-sided self-adhesive tapes with new properties such as increased temperature resistance, reduced shrinkage, and improved flammability resistance were obtained.
JOURNAL OF THERMAL ANALYSIS AND CALORIMETRY
(2022)
Review
Chemistry, Multidisciplinary
Mikhail Yu Balakshin, Ewellyn A. Capanema, Irina Sulaeva, Philipp Schlee, Zeen Huang, Martin Feng, Maryam Borghei, Orlando J. Rojas, Antje Potthast, Thomas Rosenau
Summary: Sugar-based biorefineries have faced economic challenges, with lignins often considered low-value products. However, recent research has shown that biorefinery lignins can be successfully used as high-value products, demonstrating beneficial synergistic effects in various applications.
Review
Chemistry, Multidisciplinary
Hailong Fan, Jian Ping Gong
Summary: Underwater adhesives are in high demand due to their specific challenges in development and performance on wet or submerged surfaces. Current strategies include different types of underwater adhesives and their development and performance based on various mechanisms and strategies. Possible research directions and prospects for underwater adhesives are also discussed.
ADVANCED MATERIALS
(2021)
Article
Materials Science, Multidisciplinary
Monika A. Jedrzejczyk, Panos D. Kouris, Michael D. Boot, Emiel J. M. Hensen, Katrien Bernaerts
Summary: This study demonstrates the development of lignin-based resins for wood adhesion applications. Lignin was functionalized with terminal alkyne groups and cross-linked with a multifunctional thiol to form polymeric networks. The curing conditions and reactive monomeric diluents were varied to study their influence on resin characteristics and performance. The lignin-based resins showed comparable performance to phenol-formaldehyde resins and have the advantages of higher lignin loadings and no volatile emissions.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Biochemistry & Molecular Biology
Alessandra R. Freitas, Antonio J. Ribeiro, Alessandra B. Ribeiro, Maria Del Mar Collado-Gonzalez, Luis R. Silva, Luis Alves, Elodie Melro, Filipe E. Antunes, Francisco Veiga, Alan I. S. Morais, Roosevelt D. S. Bezerra, Jose L. Soares-Sobrinho, Josy A. Osajima, Edson C. Silva-Filho
Summary: The present work aimed to modify the exuded gum of Sterculia striata tree through an amination reaction. The viscosity and zero potential of the chicha gum varied with pH. The modification was confirmed by various analytical techniques, and the modified gum showed increased mucoadhesive and inhibitory activity against Staphylococcus aureus, as well as antioxidant capacity and inhibitory effect against alpha-glucosidase.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Polymer Science
Andreia S. R. Oliveira, Patricia Pereira, Patricia V. Mendonca, Ana C. Fonseca, Sergio Simoes, Armenio C. Serra, Jorge F. J. Coelho
Summary: This work focuses on the controlled synthesis of amphiphilic biodegradable block copolymers (BCPs) and investigates their self-assembly behavior in aqueous solution. The BCPs demonstrated the ability to form micelles and degrade under physiological conditions, making them promising materials for drug/gene delivery.
Review
Polymer Science
Catarina Fernandes, Bruno Medronho, Luis Alves, Maria Graca Rasteiro
Summary: Hair is exposed to various external factors that damage its appearance, but hair conditioners can repair and restore its smooth effect. However, some current conditioning agents are harmful to the environment. This paper explores the use of natural-based derivatives as alternative conditioning agents in hair care products.
Article
Chemistry, Physical
Luis Alves, Ana Ramos, Eduardo Ferraz, Pedro Sanguino, Julio Santaren, Maria G. Rasteiro, Jose A. F. Gamelas
Summary: The dispersion state and efficiency of different components in a composite film have a significant impact on its mechanical and optical properties. This study evaluated the effects of different dispersion treatments on the dispersion state of fibrous clay particles in water and the properties of cellulose nanofiber (CNF)-based composite films. The results showed that adding different dispersants improved the dispersion state of mineral crystals, and using ultrasonic treatment for dispersion led to better optical and mechanical properties in composite films.
APPLIED CLAY SCIENCE
(2023)
Article
Biochemistry & Molecular Biology
Elodie Melro, Alexander Riddell, Diana Bernin, Ana M. Rosa da Costa, Artur J. M. Valente, Filipe E. E. Antunes, Anabela Romano, Magnus Norgren, Bruno Medronho
Summary: Levulinic acid was used as a green solvent to selectively extract high-quality lignin from pine wood sawdust. The addition of catalytic concentrations of inorganic acids significantly reduced the extraction temperature and time without compromising the purity of the lignin. This environmentally friendly procedure shows promise in replacing traditional less sustainable methodologies.
Article
Chemistry, Applied
B. Medronho, A. Pereira, H. Duarte, L. Gentile, A. M. Rosa da Costa, A. Romano, U. Olsson
Summary: The molecular self-diffusion coefficients of microcrystalline cellulose in different solvent systems were measured using pulsed field gradient stimulated echo NMR. The results showed that TBA+ ions can bind to cellulose within a certain range and the binding of DMSO, TBAH, and water to cellulose increases with cellulose concentration. This interaction between TBAH and cellulose leads to steric hindrance between cellulose chains.
CARBOHYDRATE POLYMERS
(2023)
Review
Biochemistry & Molecular Biology
Magnus Norgren, Carolina Costa, Luis Alves, Alireza Eivazi, Christina Dahlstrom, Ida Svanedal, Hakan Edlund, Bruno Medronho
Summary: This paper addresses the question of intermolecular interactions in cellulose and challenges the prevailing notion that hydrogen bonding is the predominant factor. The Lindman hypothesis, proposed by Professor Bjorn Lindman, emphasizes the importance of hydrophobic interactions and suggests that cellulose is an amphiphilic polymer. This theory has sparked a reevaluation of cellulose in the scientific community.
Review
Food Science & Technology
Amelia Delgado, Sandra Goncalves, Anabela Romano
Summary: Today's global food system fails to meet SDG2 and exacerbates climate change. However, the Mediterranean Diet (MD) offers a sustainable food culture rooted in biodiversity that is safe and healthy. The MD's wide variety of fruits, herbs, and vegetables contain bioactive compounds, predominantly phenolic compounds, which provide various health benefits. This study investigates the role of polyphenols in the MD for human and planetary health, emphasizing the need for a strategy to sustainably exploit Mediterranean plants and preserve endangered species.
Article
Multidisciplinary Sciences
Sofia Leao, Solange Magalhaes, Luis Alves, Jose A. F. Gamelas, Claudio Lima, Bruno Stein, Maria da Graca Rasteiro
Summary: This study proposes the use of cellulose obtained from sugarcane bagasse as a substitute for polyacrylamide-based anionic flocculants in sugar juice treatment. The cellulose-based flocculants showed good performance in purifying the sucrose compared to the commercial polyacrylamide. Additionally, this is the first time that sugarcane waste has been successfully used in the purification of sugar juice.
Review
Nutrition & Dietetics
Ouarda Djaoudene, Anabela Romano, Yasmine Djedjiga Bradai, Feriel Zebiri, Amina Ouchene, Yasmine Yousfi, Meriem Amrane-Abider, Yasmine Sahraoui-Remini, Khodir Madani
Summary: The use of dietary supplements (DS) has been increasing globally in recent years. Amidst the COVID-19 pandemic, there has been a surge in interest for DS as an alternative means of protection and treatment, and to boost the immune system. However, there is a lack of evidence to support their efficacy. This review aims to summarize the current evidence on the impact of dietary supplements on the incidence of COVID-19, as well as their regulation and market trends.
Review
Polymer Science
Solange Magalhaes, Catarina Fernandes, Jorge F. S. Pedrosa, Luis Alves, Bruno Medronho, Paulo J. T. Ferreira, Maria da Graca Rasteiro
Summary: Cellulose, the most abundant renewable polymer on Earth, can be obtained from various sources. Traditional fractionation methods involve harsh chemicals, but new sustainable processes have been developed. Cellulose and its derivatives have wide applications, particularly in textiles and packaging, as eco-friendly alternatives to synthetic materials. This review discusses cellulose's properties, green extraction methods, chemical modification, and applications of cellulose derivatives.
Article
Food Science & Technology
Hugo Duarte, Ceferino Carrera, Maria Jose Aliano-Gonzalez, Rocio Gutierrez-Escobar, Maria Jesus Jimenez-Hierro, Miguel Palma, Ludovina Galego, Anabela Romano, Bruno Medronho
Summary: This study explored two effective strategies for the valorisation of Arbutus unedo pomace: optimizing the extraction of polyphenols using ultrasound-assisted method and developing functional cookies with pomace. The results showed that the optimized extraction conditions yielded polyphenol-rich extracts with high antioxidant activity, and the incorporation of pomace in cookies was well-received by consumers.
Article
Chemistry, Analytical
Hugo Duarte, Maria Jose Aliano-Gonzalez, Emma Cantos-Villar, Leonor Faleiro, Anabela Romano, Bruno Medronho
Summary: In this study, deep eutectic solvents were used to extract phyto-chemicals from grapevine shoots. Levulinic acid-based deep eutectic solvents showed favorable eco-friendly properties and remarkable extraction performance of poly-phenols compared to traditional chemical solvents. Ultrasound-assisted extraction technique significantly increased the extraction rate, and genetic factors influenced the content of extracted polyphenols. The polyphenol-enriched extracts demonstrated antioxidant activity and antibacterial effects. This is the first time deep eutectic solvents have been used for extracting bioactive compounds from vine shoot residues.
