Results 131 to 140 of about 23,225 (270)

Surface modified aerogel monoliths [PDF]

, 2013
This invention comprises reinforced aerogel monoliths such as silica aerogels having a polymer coating on its outer geometric surface boundary, and to the method of preparing said aerogel monoliths.
Johnston, James C., Kuczmarski, Maria A., Leventis, Nicholas, Meador, Mary Ann B.   +3 more
core   +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

Hydroxyl‐Terminated Polybutadiene‐Based Molding Powders as an Alternative Route for Manufacturing Pressed Polymer‐Bonded Explosives

Propellants, Explosives, Pyrotechnics, EarlyView.
This study presents an alternative method to manufacture polymer‐bonded explosives by partially curing an HTPB‐based molding powder prior to compaction. The study shows that the length of partial cure time before compaction directly influenced the geometric fidelity, homogeneity, compressive strength, density, and internal microstructure.
Ismar L. Chew, Cole Stephens, Ellen Ma, Julio Hernandez, Monique S. McClain   +4 more
wiley   +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

Depolymerization and Reuse of Polycarbonates: Emerging Classes, Mechanisms and Challenges

Angewandte Chemie, Volume 138, Issue 19, 4 May 2026.
This review collects the latest developments in the area of chemical and catalytic polycarbonate recycling strategies and includes the controlled degradation of similar types of macromolecules. Apart from the main strategies for deconstruction, the key mechanistic features of these depolymerization processes are also discussed together with the ...
Davide Rigo, David H. Lamparelli, Antonio Buonerba, Carmine Capacchione, Arjan W. Kleij   +4 more
wiley   +2 more sources

Controlled Triazine‐Based Covalent Functionalization of Black Phosphorus for Degradable Hybrid Materials

Small, EarlyView.
A scalable triazine‐based covalent functionalization strategy of black phosphorus nanosheets provides controlled P‐N surface chemistry with enhanced grafting density in the presence of a phase‐transfer catalyst. As a representative example, BP‐sulfated polymer conjugates exhibit strong in vitro antiviral activity against enveloped viruses and ...
Jasmin Er, Sreejita Ray, Enyu Xie, Robert Schusterbauer, Maik Rosentreter, Ranen Etouki, Na Xing, Anja Wiesner, Philip Nickl, Rameez Ahmed, Taylor Page, Ana Hočevar, Obida Bawadkji, Andreas Herrmann, Jörg Radnik, Vasile‐Dan Hodoroaba, Christian Sieben, Beate Paulus, Ievgen S. Donskyi   +18 more
wiley   +1 more source

Synthesis, Functionalization, and Reactivity of Vinyl Sulfondiimidamides

Angewandte Chemie, Volume 138, Issue 19, 4 May 2026.
Combining unsymmetrical sulfurdiimide reagents (R‐NSN‐R1) and Grignard reagents, followed by oxidative amination, delivers a series of vinyl sulfondiimidamides. Reactivity with cysteine and lysine derivatives is shown, and the cysteine reactivity is mapped in detail. Variation of the two imidic N‐substituents can be used to tune reactivity of these new
Katherine G. Rodden, Agamemnon E. Crumpton, Samuel E. Dalton, Michael A. Clegg, Michael C. Willis   +4 more
wiley   +2 more sources

Thermal Degradation Kinetics and Flame‐Retardant Synergy in Zinc Borate/Red Phosphorus‐Filled Thermoplastic Polyurethane Composites

Journal of Vinyl and Additive Technology, EarlyView.
The synergistic interaction between red phosphorus (RP) and zinc borate (ZnB) enhances the thermal stability and flame retardancy of TPU by forming a dense, stable protective char layer. Non‐isothermal kinetic analysis confirms a complex degradation mechanism governed by conversion‐dependent activation energy.
Volkan Murat Yılmaz
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

Skin Sensitisation and Dermatitis Among Epoxy‐Exposed Workers in a Wind Turbine Plant: Influence of Occupational Factors

Contact Dermatitis, EarlyView.
Epoxy resin sensitisation remains a relevant occupational risk in wind turbine blade manufacturing, confined to high‐exposure tasks and often presenting as hand dermatitis. Accurate diagnosis requires epoxy‐specific patch testing, and prevention must go beyond personal protective equipment.
Vítor Pinheiro, Gonçalo Botelho‐Rodrigues, Ricardo Batista da Silva, Vânia Pacheco, Andreia Marques, Cláudia Marques, Carolina Figueiredo, Alexandra Golabek Christiansen, Henrik Albert Kolstad, Margarida Gonçalo   +9 more
wiley   +1 more source