Results 141 to 150 of about 48,553 (267)

Automation of the Azapeptide Submonomer Synthesis Method [PDF]

J Pept Sci
The solid phase submonomer azapeptide synthesis method was automated using a commercially available peptide synthesizer. Key findings for the successful automation included the use of stable isocyanate precursor for the semicarbazone installation step, elimination of all cooling steps, use of a heating block, and use of DMF as solvent.
Hobart T, Helton M, Bowles M, Proulx C.
europepmc   +2 more sources

Leucaena Oil Functionalized With Osmium Tetroxide as a Precursor for Polyol‐Based Polyurethane

Journal of Polymer Science, EarlyView.
Leucaena leucocephala seed oil is converted into a hydroxyl‐functional biopolyol through OsO4‐mediated dihydroxylation. The resulting biopolyol shows a hydroxyl number of 160–175 mg KOH g−1 and is successfully used to produce flexible, open‐cell polyurethane foams, highlighting a renewable route for converting underutilized biomass into value‐added ...
Giovanni Miraveti Carriello, Lucas Repecka Alves, Guilherme Manassés Pegoraro, Henrique Solowej Medeiros Lopes, Amanda Stefanie Jabur de Assis, Thaís de Agrella Janolla, David Rodrigues Gomes, Diego Aleixo da Silva, Beatriz Merillas, Fabiana Aparecida Lobo, Fabio Minoru Yamaji, Maira de Lourdes Rezende, Aparecido Junior de Menezes, Giovanni Pimenta Mambrini   +13 more
wiley   +1 more source

Effect of Hydroxyl‐Terminated Polybutadiene Grade on Rheology and Settling of High‐Solids Mixtures of Mock Propellants

Propellants, Explosives, Pyrotechnics, EarlyView.
ABSTRACT The most common binder used in composite rocket propellants is based on the pre‐polymer hydroxyl‐terminated polybutadiene (HTPB). It has been shown to have excellent mechanical properties and a long life once crosslinked, and studies have examined the kinetics of crosslinking and pot life of energetic formulations with HTPB.
Laurel Hilger, Alexandra A. Dobbs, Blair Brettmann   +2 more
wiley   +1 more source

Reaction of acyl(aroyl) isocyanates with dimedon

, 2020
The benzoyl and trichloroacetyl isocyanates react with dimedon to give the [4 + 2]-cycloadducts and the O- and C-addition products, whereas trifluoroacetyl isocyanate reacts to give the acid azomethine.
Arbuzov B., Dautova L., Zobova N.
core  

Transparent, solvent‐free, and pressure‐tolerant antifouling coatings via molecular nanocomposite engineering

Smart Molecules, EarlyView.
This work developed a solvent‐free, room temperature–curable transparent coating. Featuring an ultrasmall nanocomposite network, it achieves robust liquid‐repellent and anti‐fingerprint properties with eco‐friendly and scalable potential for multifunctional protection.
Jieran Li, Xiubin Xu, Yueyan Liang, Hongchun Mu, Yang Xue, Jianwei Liu, Daijiang Cai, Yue Lan, Jiahui Tang, Sizhe Wang, Zhenxuan Wei, Xu Wu   +11 more
wiley   +1 more source

Highly integrated, alignment healing, and full‐recyclable multifunctional flexible devices based on dynamic covalent bonds

Smart Molecules, EarlyView.
This study addresses stability, repair, and recycling in flexible devices using polymers with identical dynamic bonds but incompatible backbones. This enables robust integration, precise self‐healing, and full recyclability. We demonstrate optoelectronic sensors that, after damage, magnetically self‐assemble and heal upon heating.
Xianfei Cao, Yong Qi, Wenbin Niu, Bingtao Tang, Shufen Zhang   +4 more
wiley   +1 more source

In Situ Construction of Phosphorus‐Containing Crosslinked Urethane Network Combined With Ammonium Polyphosphate via Reactive Blending for Enhancing Flame Retardancy and Anti‐Dripping Performance of Polylactic Acid Composites

Safety Science and Technology, EarlyView.
By in situ reaction blending, DOPO‐HQ and THEIC were added to PLA with MDI to construct a phosphorus containing polyurethane network, which significantly improved the flame retardant and anti‐dripping properties of polylactic acid composites. ABSTRACT Polylactic acid (PLA) is highly flammable and prone to severe melt dripping during combustion, which ...
Chiyuan Chen, Sadiqa Khan, Hongyu Yang, Xiaming Feng, Chaojun Wan   +4 more
wiley   +1 more source

Oxaziridines: Versatile Reagents in Modern Organic Synthesis

The Chemical Record, EarlyView.
Being capable of transferring an O atom and N‐group/atom, oxaziridines are considered multitasking agents. These are employed for diverse organic transformations, such as epoxidation of olefins, α‐ and γ‐hydroxylation/amination of carbonyl compounds, oxidation of sulfides, [3+2]cycloaddition with unsaturated systems.
Ajeet Chandra, Subba Rao Cheekatla, Keshaba Nanda Parida   +2 more
wiley   +1 more source

Exploring Microencapsulated Magnesium Tetraborate: A Promising Flame‐Retardant Additive for Polyurethane‐Based Composites

Journal of Vinyl and Additive Technology, EarlyView.
Flame‐retardant polyurethane composites were synthesized by in situ polymerization. Fire performance and thermal decomposition of boron‐bearing compounds in PU were examined. ABSTRACT Boron compounds exhibit low toxicity and diverse molecular structures, rendering them effective flame‐retardant additives in polymer‐based materials through various ...
Muzaffer Gencay Çelik, Ümit Tayfun, Mehmet Doğan, Ayşen Yılmaz   +3 more
wiley   +1 more source

Responsible Innovation: The Impact of Major Industrial Disasters and Gender in a Global South Context

Journal of Product Innovation Management, EarlyView.
ABSTRACT Responsible innovation (RI) dynamics remain underexplored in Global South contexts, which have a high prevalence of micro‐ and small enterprises and are vulnerable to the devastating effects of industrial disasters. Only a few studies examine RI within such settings, where it is arguably needed most.
Afreen Choudhury, Magda Hassan, Jarrod P. Vassallo, Chinmay Pattnaik   +3 more
wiley   +1 more source