Results 131 to 140 of about 56,210 (306)

Quantification of Homopolymer Impurities in Structured Acrylate Copolymers Produced by High‐Temperature Semi‐Batch Radical Polymerization

Macromolecular Reaction Engineering, EarlyView.
Isobornyl acrylate macromonomer solutions are synthesized via high‐temperature radical polymerization using a starved‐feed semi‐batch operating policy. Through sequential feeding, the macromonomer solution functions as an addition‐fragmentation agent, facilitating the production of blocky and comb acrylate copolymers.
Elizabeth G. Bygott, Amaris J. Wilkins, Daniel C. Kraiter, Robin A. Hutchinson   +3 more
wiley   +1 more source

Synthesis of 1,4-Dihydropyridines Bearing a Carbamate Moiety on the 4-Position

Journal of Chemistry, 2013
A good range of 1,4-dihydropyridines bearing a carbamate moiety on the 4-position were synthesized from the primary reaction of different hydroxyaldehydes with phenyl isocyanates and the subsequent reaction of the obtained carbamates with methyl ...
Davood Habibi, Mohammad Ali Zolfigol, Maliheh Safaee   +2 more
doaj   +1 more source

Flexible composite film for printed circuit board [PDF]

A flexible printed circuit for a printed circuit board in which layers of reaction product composed of a combination of phenoxy resin - polyisocyanate - brominated epoxy resin, and in which the equivalent ratio of those functional groups is hydroxyl ...
Asakura, M., Soda, A., Tanaka, H., Yabe, K.   +3 more
core   +1 more source

Health Hazard Manual for Firefighters [PDF]

, 1990
[Excerpt] Firefighters, as well as victims, can be exposed to a variety of toxic substances during a fire. Some of these toxicants are particularly insidious because they are produced by thermal decomposition before smoke makes a fire ...
Brown, Nellie J.
core   +1 more source

Enhancement of Interfacial Strength and Corrosion Resistance of Adhesives via Synergistic Effect of Metallic Surface Treatment and α‐ZrP Nanosheets

Polymer Composites, EarlyView.
Synergistic enhancement of interfacial strength through α‐ZrP nanosheet reinforcement of polyurethane adhesive and aluminium anodization. ABSTRACT Polyurethane (PU) nanocomposites with enhanced mechanical performance and adhesive bonding are crucial for aerospace and automotive applications. This study investigates the reinforcing effect of α‐zirconium
Tomiris Zhumagaliyeva, Umut Bakhbergen, Sadyr Sabitov, Gulnur Kalimuldina, Aishuak Konarov, Fethi Abbassi, Sherif Araby   +6 more
wiley   +1 more source

Mechanical, Thermal, and Microstructural Evaluation of Bio‐Based Polyurethane Composites Reinforced With Woven Jute and Flax

Polymer Composites, EarlyView.
Graphical overview of the manufacturing and characterization of bio‐based polyurethane composites reinforced with woven jute and flax fibers produced by the VARTM process. Mechanical, thermal, and microstructural analyses reveal differences in stiffness, thermal stability, and interfacial behavior between the natural fiber composites.
Vanessa A. Santos, Kelvin M. K. Iwasaki, Felipe Ruivo Fuga, Ricardo De Medeiros   +3 more
wiley   +1 more source

Molecular Weight–Dependent Reinforcement of Biobased Aromatic Thermoplastic Polyurethanes Using Vegetable Oil Crosslinkers

Polymer Engineering &Science, EarlyView.
Strategy for biobased aromatic thermoplastic polyurethanes. ABSTRACT The transition toward sustainable thermoplastic polyurethanes (TPUs) is a key challenge for reducing the carbon footprint for a wide range of applications, from industrial to transportation, including advanced applications such as 3D‐printed sensors and soft actuators.
Héloïse Sauquet, Leonel Matias Chiacchiarelli, Edu Ruiz   +2 more
wiley   +1 more source

Diverse reactivity of maleimides in polymer science and beyond

Polymer International, Volume 74, Issue 4, Page 296-306, April 2025.
This mini‐review provides a thorough overview of maleimide chemistry, highlighting its diverse reactivity in polymer and materials science applications. Abstract Maleimides are remarkably versatile functional groups, capable of participating in homo‐ and copolymerizations, Diels–Alder and (photo)cycloadditions, Michael additions, and other reactions ...
Bruce E Kirkpatrick, Kristi S Anseth, Tayler S Hebner   +2 more
wiley   +1 more source

Green polyurethanes from bio-based building blocks: Recent advances and applications

Green Synthesis and Catalysis
Polyurethanes (PUs) are among the most studied, manufactured, and employed polymers due to their versatility and wide range of applications. However, their synthesis generally relies on toxic, non-renewable, and harmful petroleum-based chemicals.
Filippo Campana, Giulia Brufani, Francesco Mauriello, Rafael Luque, Luigi Vaccaro   +4 more
doaj   +1 more source

Results of GC-MS Analyses of 40 Extracts of Diabetes Devices. [PDF]

Contact Dermatitis
Forty acetone extracts of 27 diabetes devices were investigated by gas chromatography–mass spectrometry. Two hundred eighty four individual chemicals were identified. All 40 extracts contained one or more chemicals that were previously identified as allergens in diabetes devices causing allergic Contact Dermatitis.
van Oers EM, de Groot AC, Verolme P, Ipenburg NA, Rustemeyer T.   +4 more
europepmc   +2 more sources