Article
Chemistry, Multidisciplinary
Carlos A. Navarro, Yijia Ma, Katelyn H. Michael, Hanna M. Breunig, Steven R. Nutt, Travis J. Williams
Summary: The presented catalytic, aerobic conditions enable depolymerization of amine-linked epoxy thermoset matrix polymers commonly found in high-performance CFRP materials. Unlike other recycling methods, this process retains the aligned and woven fibers in the same pattern as the parent material and recovers valuable materials from the thermoset matrix.
Article
Biochemistry & Molecular Biology
Dumitru Pascu, Aurelia Cristina Nechifor, Vlad-Alexandru Grosu, Ovidiu Cristian Oprea, Szidonia-Katalin Tanczos, Geani Teodor Man, Florina Dumitru, Alexandra Raluca Grosu, Gheorghe Nechifor
Summary: This paper presents the preparation and characterization of composite membranes based on chitosan, sulfonated ethylene-propylene-diene terpolymer, and polypropylene, and designed to capture hydrogen sulfide. The composite membranes were prepared through controlled evaporation of a toluene dispersion layer of Chi:sEPDM 1;1, w/w, deposited on a PPy hollow fiber support. The results indicated an efficient removal of hydrogen sulfide through the prepared composite membranes, as well as its immobilization as sulfides.
Article
Polymer Science
Chihaoui Belgacem, Ferran Serra-Parareda, Quim Tarres, Pere Mutje, Marc Delgado-Aguilar, Sami Boufi
Summary: Date palm waste (DPW) used as a reinforcing filler in polypropylene matrix showed improved mechanical properties when coupled with maleated polypropylene (MAPP), with the reinforcing potential strongly dependent on aspect ratio and interface quality. The change in the quality of the interface between DPW and polypropylene polymer chain was crucial in enhancing the strength and stiffness of the resulting composite.
Article
Multidisciplinary Sciences
Yuyang Kang, Zhenao Gu, Baiwen Ma, Wei Zhang, Jingqiu Sun, Xiaoyang Huang, Chengzhi Hu, Wonyong Choi, Jiuhui Qu
Summary: Electrocatalytic oxidation can be enhanced by reducing pore size, leading to improved reaction kinetics and electron transfer pathways. This study provides insights for the design of cost-effective electrochemical platforms.
NATURE COMMUNICATIONS
(2023)
Article
Engineering, Environmental
Sand Aldagari, Sk Faisal Kabir, Anthony Lamanna, Elham H. Fini
Summary: This paper evaluates the merits of using waste plastic granules made from functionalized PET to enhance bitumen's bond strength under extreme environmental conditions. Functionalized PET improved compatibility with bitumen, resulting in higher bond strength and resistance to moisture damage.
RESOURCES CONSERVATION AND RECYCLING
(2022)
Review
Construction & Building Technology
Cezar Augusto Casagrande, Jonathan Simoes Roque, Lidiane Fernanda Jochem, Janine Nicolosi Correa, Arthur Medeiros
Summary: Copper slag can be used as a partial substitute for sand and coarse aggregates in cementitious composites, improving their physical properties in both fresh and hardened states. This study evaluated the effects of adding copper slag in different proportions on cementitious composites by reviewing 96 manuscripts.
JOURNAL OF BUILDING ENGINEERING
(2023)
Article
Chemistry, Multidisciplinary
Tapas Debsharma, Virginia Amfilochiou, Aleksandra Alicja Wroblewska, Ives De Baere, Wim Van Paepegem, Filip E. Du Prez
Summary: By investigating different mechanistic pathways, a siloxane-containing vitrimer material with fast dynamic characteristics has been developed and shown to be effective in a specific temperature range. Using a new mechanistic approach, vitrimers with ultrafast stress-relaxation properties have been successfully prepared, and glass fiber-reinforced vitrimer composites have been produced using a low viscosity siloxane-containing vitrimer resin.
JOURNAL OF THE AMERICAN CHEMICAL SOCIETY
(2022)
Article
Multidisciplinary Sciences
K. S. Aina, A. O. Oladimeji, F. Z. Agboola, D. O. Oguntayo
Summary: This study investigates the preparation and properties of wood polymer-based composites. By adjusting the mixing proportions of polyethylene and wood, composites with different mechanical properties and dimensional stabilities are obtained. The results show that with an increase in polyethylene content, the dimensional stability and tensile strength of the composites improve.
SCIENTIFIC REPORTS
(2022)
Article
Engineering, Environmental
Kun Yang, Weiguang Zhu, Brian J. Riley, John D. Vienna, Dong Zhao, Jie Lian
Summary: The study explores innovative concept of using metal halide perovskites as advanced host phases to incorporate Cs and Cl with very high waste loadings for chemically durable waste forms. Waste forms using metal halide perovskite-silica composites exhibit exceptional chemical durability, with Cs and Cl release rates comparable to or outperforming state-of-the-art waste form materials, while allowing significantly higher waste loadings. The scalable synthesis of the metal halide perovskite from wet chemistry processes provides new opportunities for designing advanced waste forms for salt wastes with very high waste loadings and exceptional chemical durability.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2021)
Article
Materials Science, Ceramics
Xinfang Li, Sonja M. Gross-Barsnick, Thomas Koppitz, Stefan Baumann, Wilhelm A. Meulenberg, Ghaleb Natour
Summary: This study investigates new sealant materials for oxygen transport membranes (OTM) by adding different filler materials to a glass matrix. The results show that adding 40 wt% Ag (HAg40) and 30 wt% Ni-Cr (HNC30) to the matrix increases the thermal expansion coefficient (CTE) value. The study also demonstrates the good sealing performance of the composite samples.
JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
(2022)
Article
Construction & Building Technology
M. I. Romero-Gomez, R. V. Silva, I. Flores-Colen, J. de Brito
Summary: This study characterizes the residual physico-mechanical performance of gypsums with polypropylene and nylon plastic waste after exposure to high temperatures. Measurements of bulk density, ultrasonic pulse velocity, young's modulus, mechanical strength, fire reaction performance, and toxicity assessment were conducted. The results show that the residual properties are influenced more by reactions in the gypsum matrix than by the plastic waste content, and the plastic-containing composites can be classified as A2 non-combustible material.
CONSTRUCTION AND BUILDING MATERIALS
(2023)
Article
Materials Science, Ceramics
Kimbal T. Lu, Yingjie Zhang, Tao Wei, Gabriel L. Murphy, Aurpa Bhuiyan, Nicholas Scales, Rongkun Zheng
Summary: This study presents a comprehensive investigation on lanthanide monouranate-based glass-ceramic composites as potential waste forms for the immobilization of lanthanide actinide fraction waste. The results show that the crystalline LnUO(4) precursor can be well stabilized in a sodium aluminoborosilicate glass, while the in situ crystallization of EuUO4 from oxide precursors is robust under various processing conditions. Microscopic observations reveal different microstructures, and diffuse reflectance spectroscopy confirms the presence of pentavalent uranium.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2022)
Article
Environmental Sciences
Hamayun Khan, Anwar Baig, Mahtab Faisal, Adnan Khan, Kashif Gul, Nauman Ali, Nisar Ali, Muhammad Bilal
Summary: The problem of disposing and managing solid waste materials has become a major concern due to its impact on the environment, economy, and society. This study investigated the use of organic and inorganic solid waste materials in the production of sustainable cementitious composites (CC) and analyzed the effects of these waste materials on the physical and mechanical properties of the resulting CC. The incorporation of solid waste materials did not significantly affect the physical characteristics of the CC, but it did have a pronounced effect on the flexural strength, with the CC incorporating selected waste materials exhibiting higher strength compared to plain CC. Inorganic wastes showed higher flexural strength compared to organic wastes, with the maximum strength observed when granulated blast furnace slag was utilized. Overall, this study provides valuable insights into solid waste management and the conversion of waste materials into useful products for concrete manufacturing.
ENVIRONMENTAL SCIENCE AND POLLUTION RESEARCH
(2022)
Article
Engineering, Environmental
Georgy Lazorenko, Anton Kasprzhitskii, Vasilii Mischinenko
Summary: This article investigates the effects of various pre-treatment methods on crumb rubber, and finds that treatment with potassium permanganate solution can significantly improve the adhesion of rubber to the geopolymer matrix, thereby improving the mechanical properties of the composite materials.
JOURNAL OF ENVIRONMENTAL CHEMICAL ENGINEERING
(2021)
Article
Materials Science, Multidisciplinary
Yu Wang, Yunxiang He, Qin Wang, Xiaoling Wang, Blaise L. Tardy, Joseph J. Richardson, Orlando J. Rojas, Junling Guo
Summary: The overuse and misuse of antibiotics pose significant risks to human health, necessitating breakthrough technologies to eliminate antibiotics from water. This study explores the use of polyphenol-based nanoengineering to functionalize conventional microporous membranes, enabling ultrafast removal of multiple antibiotics in a flowthrough purification system. The nanocoatings exhibit high adsorption kinetics, resulting in record-high permeance and exceptional removal rate and efficiency at a relatively low energy cost. Molecular dynamics simulations provide insights into the interactions between polyphenol-based nano coatings and antibiotics. This work offers a promising and sustainable approach for engineering adsorption-based membranes for clean water production.
