Article
Environmental Sciences
Jamie Page, Paul Whaley, Michelle Bellingham, Linda S. Birnbaum, Aleksandra Cavoski, Delyth Fetherston Dilke, Ruth Garside, Stuart Harrad, Frank Kelly, Andreas Kortenkamp, Olwenn Martin, Anna Stec, Tom Woolley
Summary: Flame retardants are chemical substances used to reduce fire safety risks in various goods. Concerns about their effectiveness and potential harm to health and the environment have prompted a roundtable of experts to convene and produce a Consensus Statement. The statement includes policy recommendations aimed at improving fire safety measures and reducing the risks posed by these potentially toxic chemicals to human and environmental health.
ENVIRONMENT INTERNATIONAL
(2023)
Article
Engineering, Environmental
Giovanni Francesco Cardamone, Filomena Ardolino, Umberto Arena
Summary: The huge increase of WEEE waste poses environmental concerns, particularly in the treatment and recycling of plastics. Compliance with European Directives is essential for reducing negative impacts, especially in the face of substandard treatment methods and exported waste.
Review
Green & Sustainable Science & Technology
Benjamin Tawiah, Emmanuel A. Ofori, Fei Bin
Summary: Fire safety is an important concern in various industries, and the development of sustainable and effective fire-resistant materials is necessary. Sustainable fire-resistant polysaccharide-based composite aerogels are considered innovative solutions in fire safety applications, and research in this field has been consistently increasing. This study utilizes a scientometric review to analyze global trends in sustainable fire-resistant polysaccharide-based composite aerogels research and provides important insights into research challenges, trends, and patterns worldwide.
Review
Biochemistry & Molecular Biology
Simeng Xiang, Jiao Feng, Hongyu Yang, Xiaming Feng
Summary: The development of different efficient flame retardants (FRs) to enhance polymer fire safety is a popular research topic. With the rising concept of green sustainability, it has become the focus of research in various fields. Therefore, it is urgent to explore environmentally friendly and simple methods to prepare FRs. The development of supramolecular chemistry in the field of flame retardancy is progressively expanding. It is worth noting that the synthesis of supramolecular flame retardants (SFRs) based on non-covalent bonds aligns with the current principles of environmental protection and multifunctionality. This paper introduces the different types of SFRs with various dimensions and their application in improving the flame retardancy of typical polymers. The impact on mechanical properties and other material properties under the premise of flame retardancy is also summarized.
Article
Environmental Sciences
M. B. Romero, P. S. Polizzi, L. Chiodi, A. Dolagaratz, M. Gerpe
Summary: Marine mammals are important indicators of ecosystem health, but they face significant threats from pollutants such as pesticides, microplastics, and pharmaceuticals. This review provides information on the occurrence of legacy and emerging contaminants in marine mammals inhabiting Argentine waters, identifies knowledge gaps, and suggests best practices for future research. The study reveals the presence of legacy contaminants in cetaceans and pinnipeds and highlights the need for updated information and continuous monitoring of pollutants. It also identifies a knowledge gap in the southern zone of the Argentine Sea and discusses global environmental pollutants that have not been studied in Argentina. The review emphasizes the importance of further studies to understand the relationships between pollutants and their effects on marine mammals, which will aid in conservation efforts.
SCIENCE OF THE TOTAL ENVIRONMENT
(2024)
Article
Engineering, Environmental
Layla Gripon, Imane Belyamani, Benoit Legros, Karine Seaudeau-Pirouley, Eric Lafranche, Laurent Cauret
Summary: This study investigates the extraction of brominated flame retardants from real waste electrical and electronic equipment using supercritical carbon dioxide. The results show that sc-CO2 extraction is an efficient technique, with no degradation effect on the polymer matrix observed.
Article
Engineering, Environmental
Filomena Ardolino, Giovanni Francesco Cardamone, Umberto Arena
Summary: The proposed new management scheme for plastics from waste of electrical and electronic equipment greatly enhances environmental sustainability by increasing polymer recycling, decreasing residues for combustion, and reducing potential impacts. However, the advantages substantially diminish if the improper treatments applied to exported wastes are taken into account.
Article
Polymer Science
Karina J. Reynolds, Moustafa M. Zagho, Mark Robertson, Zhe Qiang, Sergei Nazarenko
Summary: The increasing use of polymers requires functional additives that can reduce fire hazards. However, traditional flame-retardant additives have raised concerns regarding health and environmental safety. This perspective focuses on identifying the key components of successful flame-retardant additives, addressing existing material, environmental, and health issues. The legislation surrounding flame retardants and persistent organic pollutants is also discussed, along with future directions for nonreactive additives.
MACROMOLECULAR RAPID COMMUNICATIONS
(2022)
Article
Engineering, Environmental
Shengyong Lu, Xuanhao Guo, Hao He, Yaqi Peng, Jiamin Ding, Jinjian Ding, Huiping Zhu, Qureshi Muhammad, Ilkka Rytoluoto, Anna Tenhunen
Summary: Mechanochemical pretreatment technology was used to effectively degrade hexabromocyclododecane (HBCD) by adding silica and aluminium powders as additives. The optimized method was also applied to dispose brominated flame retardants (BFRs) contained waste plastics, and the smaller plastic particles accelerated the dehalogenation process. The study also proposed a possible reaction pathway for the mechanochemical degradation of HBCD.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2023)
Article
Materials Science, Multidisciplinary
Ilay C. Cetinkaya, Gamze Yuksel, Caner Macit, Mustafa E. Ureyen, Tarik Eren
Summary: A series of chalcone-based polyphosphonates and polyurethanes were synthesized and characterized, with their thermal stability tested under different atmospheres and decomposition mechanisms proposed based on residue analysis.
ACS APPLIED POLYMER MATERIALS
(2021)
Article
Chemistry, Applied
Zhengwei Yang, Guoqing Xiao, Chunlin Chen, Chunyan Chen, Fei Zhong, Min Cao, Mingtan Wang, Rui Zou, Ruili Li, Yuanyuan Li
Summary: A novel integrated green intumescent flame retardant, mBN@LDH@PATP, was designed and used as a filler to improve the fire safety of epoxy resins. It effectively promoted the longitudinal barrier and lateral diffusion of heat and successfully promoted the catalytic carbonization of pyrolytic volatiles and their adsorption.
PROGRESS IN ORGANIC COATINGS
(2023)
Article
Environmental Sciences
Zhongshi Hong, Yachen Li, Xian Deng, Mingliang Chen, Jianpeng Pan, Zhichuan Chen, Xu Zhang, Chunxiao Wang, Chengzhi Qiu
Summary: This study identified and analyzed OPFRs-related genes using the TCGA and CTD databases, and found that OPFRs may be closely related to colorectal cancer (CRC) and associated with a good prognosis. Further experiments demonstrated that one of the OPFRs, triphenyl phosphate, significantly increased the viability and proliferation of CRC cell lines. Additionally, the research found that melatonin had a significant impact on CRC cell proliferation and migration ability induced by TPP.
ECOTOXICOLOGY AND ENVIRONMENTAL SAFETY
(2022)
Article
Engineering, Environmental
Huijun Su, Shaobo Shi, Ming Zhu, Jianhua Li, Guanyong Su
Summary: A method to quantify liquid crystal monomers (LCMs) in sediment samples was developed and LCMs were found in samples from rivers, Taihu Lake, and e-waste recycling sites, providing initial evidence for their occurrence in sediment samples.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Engineering, Multidisciplinary
T. I. Zohdi
Summary: The work aims to model and simulate aerial drops of fire retardants in dangerous fire environments, developing a computational framework that includes a meshless discrete element and a machine learning algorithm to optimize aircraft dynamics for improved fire-retardant release effectiveness and enable digital twin technologies for real-time flight-path planning for aerial first-responders.
COMPUTER METHODS IN APPLIED MECHANICS AND ENGINEERING
(2021)
Article
Polymer Science
Cristian-Dragos Varganici, Liliana Rosu, Aurelio Bifulco, Dan Rosu, Fanica Mustata, Sabyasachi Gaan
Summary: Epoxy resins, widely used in industry for fire-safe materials, are often flammable and require flame retardant additives. DOPO derivatives have been shown to be the most researched flame retardants, enhancing epoxy resin performance by generating phosphorus-based flame-inhibiting species.
POLYMER DEGRADATION AND STABILITY
(2022)
Article
Multidisciplinary Sciences
Erfan Rezvani Ghomi, Saied Nouri Khorasani, Mohammad Sadegh Koochaki, Mohammad Dinari, Shahla Ataei, Mohammad Hossein Enayati, Oisik Das, Rasoul Esmaeely Neisiany
Summary: Organic coatings are effective in protecting steel from corrosion, but they are prone to damage and allow corrosive media to penetrate underlying substrates. This research aims to develop a self-healing coating by embedding titanium dioxide (TiO2) nanogel composite (NC) in a commercial epoxy.
JOURNAL OF ADVANCED RESEARCH
(2023)
Article
Chemistry, Multidisciplinary
Lijie Sun, Hongfei Huang, Qingbao Guan, Lei Yang, Luzhi Zhang, Benhui Hu, Rasoul Esmaeely Neisiany, Zhengwei You, Meifang Zhu
Summary: Covalent adaptable networks (CANs) combine the advantages of traditional thermosets and thermoplastics, and have attracted significant attention. The dynamics of reversible covalent bonds and polymer chain mobility in CANs are crucial for their self-healing and reprocessing properties. In this study, an ionic liquid was introduced into dimethylglyoxime-urethane (DOU)-based CANs to regulate reversible bond dynamics and polymer chain mobility. The ionic liquid catalyzed dynamic DOU bond exchange and increased the mobility of polymeric chains by breaking hydrogen bonds. This study also demonstrated the potential of using ionic CANs for high-performance multifunctional wearable electronics responsive to various stimuli.
Article
Materials Science, Multidisciplinary
Shuo Chen, Yifan Guo, Lijie Sun, Wei Sun, Rasoul Esmaeely Neisiany, Kris Chen, Qingbao Guan, Zhengwei You
Summary: This study develops completely sustainable triboelectric nanogenerators (TENGs) using bio-based materials, green synthesis, and recycling techniques. The TENGs are fabricated with hierarchical porous structures through a salt-assisted 3D printing strategy, resulting in excellent electrical output performance. The discarded TENGs can degrade under benign conditions without negative impact on the environment.
SCIENCE CHINA-MATERIALS
(2023)
Article
Engineering, Environmental
Qingbao Guan, Xiaoyuan Deng, Haiyang Zhang, Shuopu Zhong, Ping Liu, Yaozhong Zhuang, Xingqi Hu, Mingang Yao, Rasoul Esmaeely Neisiany, Zhengwei You
Summary: An intrinsic flame retardant copolyester based on PET and thermo-tropic liquid crystalline polymer (PET/TLCPx) was designed and prepared via a simple and efficient one-step melt copolymerization. PET/TLCPx exhibits excellent thermal stability, fire resistance, and non-dripping properties due to the formation of a denser char layer and the increase of complex viscosity and molecular weight during combustion. These high-performance copolyesters are highly valuable for high-end applications with strict requirements for fire safety and thermal stability.
CHEMICAL ENGINEERING JOURNAL
(2023)
Article
Materials Science, Multidisciplinary
Ellinor Sanned, Rhoda Afriyie Mensah, Michael Forsth, Oisik Das
Summary: The reasons behind the occurrence of a second/end peak heat release rate (PHRR) during wood combustion under radiative heating were investigated. The type of rear material, wood thickness, char progression, and its microstructure, as well as moisture content/transport in spruce wood, were found to affect the second/end PHRR. The intensity of the second/end PHRR with insulating Kaowool was significantly higher than with conducting steel, suggesting that the rear material boundary condition plays a role in determining the heat losses and temperature of the specimen, which in turn influences the pyrolysis rate and the occurrence of the second/end PHRR. The presence of cracks in char during the second/end PHRR resulted in wider char growth and affected the overall heat release.
FIRE AND MATERIALS
(2023)
Article
Engineering, Civil
Adrian Ulfberg, Jaime Gonzalez-Libreros, Oisik Das, Dipen Bista, Marie Westberg Wilde, Fredrik Johansson, Gabriel Sas
Summary: Common analytical assessment methods for concrete dams may not accurately predict material fracture in the dam body due to assumption of rigid body behavior and linear stress distribution along predetermined failure surface. Non-linear finite element analysis, calibrated from scale model tests, was implemented to study the impact of concrete material parameters on the ultimate capacity of scaled model dams. Results showed that material parameters and geometric variations in the rock-concrete interface can govern the load capacity and failure mechanism of the dam, which are often neglected in common assessment methods.
ARCHIVES OF CIVIL AND MECHANICAL ENGINEERING
(2023)
Article
Engineering, Manufacturing
Xueming Sun, Zhiwei Li, Oisik Das, Mikael S. Hedenqvist
Summary: In order to enhance the flame retardancy and smoke suppression of epoxy resin (EP), a novel inorganic-organic nanocomposite flame retardant, zinc ferrite@polyphosphazene (ZF@PZS) was developed. The combination of inorganic zinc ferrite and organic polyphosphazene improved the compatibility and flame retardant performance. The synergistic effects of ZF@PZS showed excellent flame retardant and smoke suppression properties in the EP matrix. Compared to neat EP, the EP with 5 phr ZF@PZS exhibited higher limiting oxygen index, lower heat release rate, smoke production rate, and carbon monoxide production. Furthermore, the addition of ZF@PZS resulted in the generation of denser, more stable, and rigid residues, leading to improved flame retardancy.
COMPOSITES PART A-APPLIED SCIENCE AND MANUFACTURING
(2023)
Review
Materials Science, Multidisciplinary
T. R. Vijaybabu, T. Ramesh, Suman Pandipati, Sujit Mishra, G. Sridevi, C. Pradeep Raja, Rhoda Afriyie Mensah, Oisik Das, Manjusri Misra, Amar Mohanty, N. B. Karthik Babu
Summary: High thermal conductivity nanocomposites play a significant role in improving the lifespan and performance of flexible electronic devices and components. This article reviews the impact of different particle reinforcements, such as single and hybrid forms, coated and uncoated particles, and chemically treated particles, on the thermal conductivity of various polymers, and discusses the mechanisms behind the enhancement of desired properties. Additionally, it details the role of manufacturing processes such as injection molding, compression molding, and 3D printing techniques in producing high thermal conductivity polymer composites. The potential for future research in enhancing the thermal properties of polymeric materials is also discussed.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2023)
Review
Materials Science, Multidisciplinary
Pradeep Raja, Vignesh Murugan, Sindhu Ravichandran, Laxmidhar Behera, Rhoda Afriyie Mensah, Satthiyaraju Mani, AnanthaKumar Kasi, Karthik Babu Nilagiri Balasubramanian, Gabriel Sas, Henri Vahabi, Oisik Das
Summary: The surge towards a sustainable future in the construction industry requires the use of bio-based insulation materials as an alternative to conventional ones for improving energy efficiency in structures. The features of bio-based insulation materials, including their thermal conductivities, moisture buffering value, fire performance, and life cycle evaluations are examined. It is clear that pre- and post-treatment of the bio-based materials used for insulation materials optimize their properties. Life cycle analysis reveals a significant reduction in global warming potential (GWP) compared to conventional foams, and producing bio-based insulation materials on a larger scale will further decrease the net GWP. The article proposes the implementation of policies that will promote the commercialization of bio-based insulation materials.
MACROMOLECULAR MATERIALS AND ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Bin Luo, Qiangqiang Zhou, Wenyi Chen, Lijie Sun, Lei Yang, Yifan Guo, Huijie Liu, Zekai Wu, Rasoul Esmaeely Neisiany, Xiaohong Qin, Jie Pan, Zhengwei You
Summary: In this study, we proposed a general strategy to facilitate tissue repair by modulating endogenous electric fields using nonadjacent wireless electrotherapy. We developed a 3D printed entirely soft and bioresorbable triboelectric nanogenerator-based stimulator which has biomimetic mechanical properties similar to those of soft tissue. The feasibility of constructing an electrical double layer with tissue for nonadjacent wireless electrotherapy was demonstrated and significant improvements in tissue repair were observed in the treated groups compared to the control group.
Article
Chemistry, Multidisciplinary
Hongfei Huang, Huijing Wang, Lijie Sun, Ruohan Zhang, Luzhi Zhang, Zekai Wu, Yaxuan Zheng, Yang Wang, Wei Fu, Youwei Zhang, Rasoul Esmaeely Neisiany, Zhengwei You
Summary: Poly(disulfide)s can be synthesized using a new method based on the long-range electronic effect, without the need for external stimuli or initiators. This method involves mixing thioctic acid and a deprotonation reagent, choline bicarbonate, in different ratios at room temperature to rapidly produce high molecular weight poly(disulfide)s with favorable properties for bioelectronics.
Editorial Material
Materials Science, Multidisciplinary
Ellinor Sanned, Rhoda A. Mensah, Michael Foersth, Oisik Das
FIRE AND MATERIALS
(2023)
Article
Biochemistry & Molecular Biology
Mahshid Hafezi, Saied Nouri Khorasani, Shahla Khalili, Rasoul Esmaeely Neisiany
Summary: In this study, a self-healing interpenetrating network (IPN) hydrogel made of GelMA/Algin/NC with balanced mechanical properties and biocompatibility was developed for joint regeneration. The synthesized nanocomposite IPN showed highly porous structures with dissimilar pore sizes. The incorporation of NC improved the porosity and mechanical strength of the hydrogel, while maintaining biocompatibility and reducing degradation, making it promising for cartilage tissue engineering.
INTERNATIONAL JOURNAL OF BIOLOGICAL MACROMOLECULES
(2023)
Article
Metallurgy & Metallurgical Engineering
Satthiyaraju Mani, Ananthakumar Kasi, Rajeshkumar Guruswamy, Karthik Babu Nilagiri Balasubramanian, Arvinda Pandian
Summary: The post-processing treatment of isostatic compression with interlayer bonding improves the mechanical properties of PLA samples. It enhances the tensile strength, percentage of strain, and elastic modulus, as well as the compressive and flexural strength of the post-processed PLA parts. This provides a new method for additive manufacturing of PLA components.
INTERNATIONAL JOURNAL OF MATERIALS RESEARCH
(2023)
Review
Chemistry, Applied
Parisa Panahi, Saied Nouri Khorasani, Rhoda Afriyie Mensah, Oisik Das, Rasoul Esmaeely Neisiany
Summary: Self-healing coatings have attracted significant attention due to their ability to prevent or control corrosion. However, there are currently no standard methods for evaluating their performance. This article reviews different characterization methods for assessing self-healing behavior in polymeric coatings, highlighting their benefits and drawbacks.
PROGRESS IN ORGANIC COATINGS
(2024)
