Results 141 to 150 of about 56,210 (306)

Migration solvents for free isocyanates in food contact materials using experimental design [PDF]

, 2011
Agglomerated cork stoppers are currently used for still wines, semi-sparkle and gaseous wines, beer and cider. Methylene diphenyl diisocyanate (MDI) is presently the adhesive in use due to its lowest toxicity comparing with toluene diisocyanate (TDI ...
André, Catarina, Castanheira, Isabel, Curvacho, Carina, Matos, Ana Sofia   +3 more
core  

Bio‐Based Polyurethanes: Mechanical Performance, Structure–Property Relationships, and Future Directions

Journal of Polymer Science, EarlyView.
This review examines bio‐based polyurethanes from renewable feedstocks, focusing on structure‐property relationships governing mechanical performance. It analyzes reinforcement strategies, benchmarks against petrochemical counterparts, and explores future directions, including non‐isocyanate routes and circular economy integration for sustainable high ...
Khaled Chawraba, Hussein Medlej, Mohamad Sakr, Akram Hijazi, Abrar Hussain   +4 more
wiley   +1 more source

Assessment of the Interaction between Ammonium Dinitramide and Isocyanurate Bonding Agents for Application on Technologies of Composite Solid Propellants

Propellants, Explosives, Pyrotechnics, EarlyView.
This work investigates the interaction of two isocyanurate‐based bonding agents with ammonium dinitramide: triallyl isocyanurate and 1,3,5‐tris(2‐hydroxyethyl) isocyanurate, which contain alkene and hydroxyl functional groups in their side chains, respectively.
Jessica O. Silva, Josiane R. C. Silva, Kamila P. Cardoso, Milton F. Diniz, Márcio Y. Nagamachi, Luiz F. A. Ferrão   +5 more
wiley   +1 more source

Foam, Foam-resin composite and method of making a foam-resin composite [PDF]

, 1995
This invention relates to a foam, a foam-resin composite and a method of making foam-resin composites. The foam set forth in this invention comprises a urethane modified polyisocyanurate derived from an aromatic amino polyol and a polyether polyol.
Cranston, John A., MacArthur, Doug E.
core   +1 more source

Ionogel Actuators: A Review

SmartBot, EarlyView.
Ionogels dynamically and functionally couple ionic liquids with polymer networks, enabling multiscale programmable deformation and motion under electrical, magnetic, optical, thermal, humidity, and chemical stimuli. This article systematically elucidates the constituent components, structural design, and multiscale actuation mechanisms of ionogel ...
Dezhou Cao, Dongqing He, Yuanxiang Zhao, Dongdong Jin, Jiaheng Zhang, Wei Wang   +5 more
wiley   +1 more source

Synthesis of mechanically strong waterborne poly(urethane-urea)s capable of self-healing at elevated temperatures [PDF]

, 2019
Although various chemistries have been introduced into polyurethanes in order to obtain self-healing abilities, implementing these materials in applications requiring high strength is challenging as strong materials imply a limited molecular motion, but ...
Asua González, José María, Ballard, Nicholas, Fernández San Martín, Mercedes, Nevejans, Sil, Reck, Bernd, Rivilla de la Cruz, Iván, Santamaría Ibarburu, Pedro Antonio   +6 more
core  

Anode‐Free Cell Concepts: Critical Analysis and Development of Practical Batteries

Small, EarlyView.
Anode‐free batteries (AFBs) are considered one of the most promising battery technologies due to their potential advantages in terms of energy density, manufacturing ease, and sustainability. This Perspective article provides a comprehensive overview of the latest advances in AFBs with liquid and solid electrolytes, a critical analysis of cell ...
Svetlana Menkin, Elixabete Ayerbe, Anna B. Gunnarsdóttir, Diego del Olmo, Pedro López‐Aranguren, Amna Rafique, Jokin Rikarte, Susana Chauque, Xiaorui Shi, Olivier Guillon, Robert Dominko, Philipp Schlee, Martin Finsterbusch, Andriy Kvasha, Dina Fattakhova‐Rohlfing   +14 more
wiley   +1 more source

Occupational Contact Urticaria, Protein Contact Dermatitis and Concomitant Airway Diseases in the Finnish Register of Occupational Diseases in 2005–2020: Main Causes and Occupations at Risk

Contact Dermatitis, EarlyView.
This Finnish registry study shows that concomitant occupational asthma and rhinitis are common in patients with occupational contact urticaria or protein contact dermatitis, often sharing the same exposure. When evaluating occupational immediate allergy, both skin and airway symptoms should be considered.
Ville Ojanen, Liisa Airaksinen, Hille Suojalehto, Kirsi Koskela, Maria Pesonen   +4 more
wiley   +1 more source

Effect of Matrix Properties on Quasi‐Static and Fatigue Properties of Thermosetting Polyurethane and Its GFRP Composites

Fatigue &Fracture of Engineering Materials &Structures, EarlyView.
ABSTRACT In this study, the influence of resin cross‐link density on thermomechanical properties and fatigue behavior of polyurethane resins and glass fiber‐reinforced polyurethane (PUR‐GFRP) composites was investigated. This material is a candidate for renewable energy applications like rotor blades in wind turbines.
Martin Demleitner, Daniel Raps, Sarah Mäker, Qi Chen, Alexander Brückner, Holger Ruckdäschel   +5 more
wiley   +1 more source

Triplet 4‐Nitrenemethyl‐Pyridine‐N‐Oxide: A Model Alkyl Nitrene Isolated in Cryogenic Matrices

Journal of Physical Organic Chemistry, Volume 39, Issue 5, May 2026.
The simplest triplet alkyl nitrene bearing a pyridine‐N‐oxide moiety was generated by direct irradiation (λ > 350 nm) of the corresponding azide in an Ar matrix at 15 K. Quantum tunneling 1,2‐H shift to the corresponding imine is thermodynamically favorable but does not occur due to a high‐energy barrier (~36 kcal mol−1).
Cláudio M. Nunes, A. J. Lopes Jesus, Tatiana Caneca, Gemma Aragay, Pablo Ballester, Rui Fausto   +5 more
wiley   +1 more source