Results 61 to 70 of about 77,675 (201)

Dual‐Function Electrocatalysis: Simultaneous Wastewater Remediation and Hydrogen Evolution—A Comprehensive Review

Carbon Energy, EarlyView.
Replacing the oxygen evolution reaction with the electro‐oxidation of pollutants and waste streams offers an energy‐efficient route for simultaneous hydrogen production and pollutant remediation. This review summarizes the reaction mechanisms, catalyst design principles, and emerging paired‐electrolysis strategies that govern activity, selectivity ...
Safa Al‐Yahyaey, Rashid Al‐Hajri, Ala'a H. Al‐Muhtaseb, Hussein A. Younus, Mohammed Al‐Abri   +4 more
wiley   +1 more source

Improving the Mechanical Properties of Biodegradable Polyhydroxyalkanoates via PHA–PHA Block‐Copolymer Synthesis

Chemistry – A European Journal, EarlyView.
Covalent linkage of a highly crystalline PHBV with a ductile P3HB4HB is shown to produce block copolymers with markedly enhanced extensibility and toughness, outperforming equivalent blends. The results demonstrate that polymer architecture, not composition alone, governs mechanical response, offering a route to biodegradable materials that combine ...
Katrin Blandine Kockler, Paul Lant, Steven Pratt, Bronwyn Laycock   +3 more
wiley   +1 more source

Industrial Byproducts as Adhesive Allies: Unraveling the Role of Proteins and Isocyanates in Polyurethane Wood Bonding

BioResources
Wooden structures are becoming increasingly popular in the construction world. However, these structures often rely on synthetic adhesives, raising concerns about the environmental risks associated with their chemical composition.
Alex Mary, Pierre Blanchet, Simon Pepin, Aurélien Hermann, Stéphane Charron, Véronic Landry   +5 more
doaj   +2 more sources

Theoretical Framework for Predicting Dynamic Covalent Exchange Based on Proton Affinities and Proton‐Transfer Assistance

Chemistry – A European Journal, EarlyView.
Proton‑transfer catalysis controls acylsemicarbazide dissociation, linking proton affinity to exchange kinetics and enabling predictive design of robust, tunable dynamic covalent networks. ABSTRACT We provide design principles for predicting bond exchange kinetics in acylsemicarbazide (ASC)‐based systems that can be applied to tuning the properties of ...
Siebe Lekanne Deprez, Stefan J. D. Maessen, Angelina N. van Dam, Celine Nieuwland, Pascal Vermeeren, Anja R. A. Palmans, Célia Fonseca Guerra   +6 more
wiley   +1 more source

Partially Biobased Polyurethanes With Reversibly Crosslinkable Furan Units Toward Recyclable Thermosetting Textile Fibres

Chemistry – A European Journal, EarlyView.
A molecular design strategy combines lignin‐derived aromatic units, sugar‐derived furan groups, and flexible glycol segments to create wet‐spinnable polyurethanes. Thermally reversible Diels–Alder crosslinking chemistry enables formation of crosslinked thermosetting fibers, repeated de‐crosslinking/re‐crosslinking cycles, and tunable fiber properties ...
Rafael N. L. Menezes, Fredrik Bäcklund, Tam T. Nguyen, Maria Maukonen, Zengwei Guo, Olga Gordivska, Cecilia Hansson, Baozhong Zhang   +7 more
wiley   +1 more source

Elimination kinetics of diisocyanates after specific inhalative challenges in humans: mass spectrometry analysis, as a basis for biomonitoring strategies

Journal of Occupational Medicine and Toxicology, 2011
Background Isocyanates are some of the leading occupational causes of respiratory disorders, predominantly asthma. Adequate exposure monitoring may recognize risk factors and help to prevent the onset or aggravation of these aliments.
Lemiere Catherine, Merget Rolf, Nowak Dennis, Budnik Lygia T, Baur Xaver   +4 more
doaj   +1 more source

Readily Accessible bTurea‐Derived Nitroxide Polarizing Agents for Dynamic Nuclear Polarization: bcTCOOKs and bcTmols

Chemistry – A European Journal, EarlyView.
Two families of bTurea‐derived biradicals, bcTmols and bcTCOOKs, were prepared as polarizing agents for dynamic nuclear polarization (DNP)‐enhanced NMR through short and efficient synthetic routes. The best‐performing biradical, bcTCOOK‐M2, containing two methyl groups on the urea bridge, provided signal enhancements of up to ∼220 at 14.1 T and 100 K ...
Ancy T. Wilson, Shubha S. Gunaga, Frederic Mentink‐Vigier, Snorri Th. Sigurdsson   +3 more
wiley   +1 more source

Synthesis of new derivatives of 1-[1-(2-pyridyl)-imidazolidine-2-ylidene]-3-aryl(arylakyl)ureas

Current Issues in Pharmacy and Medical Sciences, 2012
The synthesis and physicochemical properties of new 1-[1-(2-pirydyl)imidazoline-2-ylidene]-3-aryl(arylalkyl)ureas [I-VIII]. The title compounds were obtained by condensation of 1-(2-pirydyl)-2-aminoimidazoline-2 with aryl isocyanate or arylalkyl ...
Elżbieta Szacoń, Marzena Rządkowska, Dariusz Matosiuk   +2 more
doaj   +1 more source

Learning Strategies from Nature's Blueprint to Cyclic Carbonate Synthesis

ChemSusChem, Volume 18, Issue 6, March 15, 2025.
The development of sustainable synthetic methods for cyclic carbonates draws inspiration from nature, focusing on eco‐friendly processes and renewable resources like CO2 and biomass. This review explore various CO2 activation mechanisms, green chemistry principles, and green catalysts.
Erika Saccullo, Vincenzo Patamia, Chiara Zagni, Antonio Rescifina, Giuseppe Floresta   +4 more
wiley   +1 more source

Mitigating surcharge‐induced column‐head cracking in double‐deck shield tunnels using hyperelastic bearing joints

Deep Underground Science and Engineering, EarlyView.
A staged three‐dimensional nonlinear soil–structure interaction (SSI) model is established, in which the initial geostress state, tunnel excavation, lining installation, delayed activation of the internal frame, and subsequent surcharge loading are simulated sequentially.
Xinyu Liu, Xiang Ci, Weizhong Chen, Jianping Yang   +3 more
wiley   +1 more source