Results 41 to 50 of about 173,183 (235)

Acetoacetates Derived From Vegetable Oils: A Platform for Tailor‐Made Vinylogous Urethane Foams

Advanced Functional Materials, EarlyView.
A renewable vegetable oil is converted into acetoacetate‐functionalized precursors for the preparation of catalyst‐free vinylogous urethane foams. Room‐temperature foaming with n‐pentane generates lightweight cellular materials, while the choice of amine enables control over foam structure and mechanical properties.
Krzysztof Polaczek, Priscilla de Souza Lima, Olga Gotkiewicz, Ondrej Kopilec, Radka Hobzova, Lívia Kanizsová, Mikelis Kirpluks, Ondrej Sedlacek, Hynek Beneš   +8 more
wiley   +1 more source

The effect of iodo substituents in bis(phenoxyimine) zirconium complexes on the catalytic performance of homogeneous ethylene polymerization reactions [PDF]

Polyolefins Journal, 2018
Eight different zirconium phenoxyimine complexes were synthesized, characterized and tested as catalysts for ethylene polymerization. The phenoxyimine compounds were prepared by condensation of substituted salicylaldehydes with aliphatic and aromatic ...
Andrea Rimkus, Helmut Alt
doaj   +1 more source

Photo‐Switchable Molecular Module Programming PET Biodegradation in Aquatic Environments

Advanced Functional Materials, EarlyView.
We address the plastic durability paradox by integrating an itaconic acid–derived pyrrolidone module into polymer backbones. Sunlight in water triggers Norrish Type I ring‐opening and hydrophilization, enabling rapid biodegradation into nontoxic minerals.
Mohammad Asif Ali, Jixin Zheng, Satoshi Wakai, Jie Liu, Hidetaka Nomaki, Misato Tsukatani, Noriyuki Isobe, Jingcheng Sang, Yuriko Aoki, Hideo Okamura, Daisuke Sasaki, Chiaki Ogino, Yuzo Yamazaki, Takashi Nishikaze, Kenji Takada, Maiko K. Okajima, Tatsuo Kaneko   +16 more
wiley   +1 more source

Quantifying the Molecular Structural Effects on the Reaction Kinetics and Equilibrium Between Organic Amines and CO₂: Insights from Theoretical Calculations

Separations
Understanding how molecular structure governs the reactivity of organic amines with CO2 is essential for the rational design of next-generation carbon-capture solvents.
Yupeng Cui, Qiyue Zhao, Yousheng Zhou, Chuanlei Liu, Hui Sun   +4 more
doaj   +1 more source

Trimethylamine emissions in animal husbandry [PDF]

Biogeosciences, 2014
Degradation of plant material by animals is an important transformation pathway in the nitrogen (N) cycle. During the involved processes, volatile reduced alkaline nitrogen compounds, mainly ammonia (NH3) and aliphatic amines such as trimethylamine ...
J. Sintermann, S. Schallhart, M. Kajos, M. Jocher, A. Bracher, A. Münger, D. Johnson, A. Neftel, T. Ruuskanen   +8 more
doaj   +1 more source

Luminescent complexes of iridium(iii) with aliphatic amines and detection of biogenic amines [PDF]

, 2020
The straightforward reaction of [Ir2(ppy)4(µ-Cl)2] with an excess of aliphatic amines yields luminescent iridium complexes of general formula [IrCl(ppy)2(amine)] [amine = n-octylamine (1), t-butylamine (2), piperidine (3)].
Torroba Pérez, Tomás, García Calvo, José, Rodríguez Rodríguez, Mª Teresa, García Calvo, Víctor, Rojo Cámara, Mª Josefa, Cuevas Vicario, José Vicente, Carbayo Martín, Mª Aránzazu, García Herbosa, Gabriel, Fernández Espinosa, Iván   +8 more
core   +1 more source

Photo‐Degradable Polyester Networks and Multi‐Photon Printed Objects Based on Cyclic Ketene Acetals

Advanced Functional Materials, EarlyView.
The current work introduces a photoreversible polyester network derived from radical ring‐opening polymerization of cyclic ketene acetals. It combines photoreversible cross‐linking with initiator‐free multi‐photon printing. Reversible network formation, tunable mechanical properties, and selective degradation highlight its potential as a versatile ...
Till Meissner, Julian Fanelli, Vinh Xuan Truong, Rob Jones, Jens Gaitzsch, Christopher Barner‐Kowollik   +5 more
wiley   +1 more source

Copper-Catalyzed Three- Five- or Seven-Component Coupling Reactions: The Selective Synthesis of Cyanomethylamines, N,N-Bis(Cyanomethyl)Amines and N,N'-Bis(Cyanomethyl)Methylenediamines Based on a Strecker-Type Synthesis

Molecules, 2013
We have demonstrated that a cooperative catalytic system comprised of CuCl and Cu(OTf)2 could be used to effectively catalyse the three-, five- and seven-component coupling reactions of aliphatic or aromatic amines, formaldehyde, and trimethylsilyl ...
Takeo Konakahara, Reiko Ikeda, Norio Sakai, Daiki Inoda, Nobuaki Takahashi   +4 more
doaj   +1 more source

Thermal oxidation kinetics of additive free polyamide 6-6 [PDF]

, 2013
Thermal aging of an additive free PA 6-6 has been elucidated at 90, 100, 120, 140, 150 and 160 C in airventiled ovens by Fourier transform infrared spectrophotometry, viscosimetry in molten state and uniaxial tensile testing.
BEN HASSINE, Mouna, COLIN, Xavier, EL MAZRY, Chaker, CORREC, Olivier   +3 more
core   +1 more source

Photocatalytic hydrogen atom transfer-induced Arbuzov-type -C(sp3)-H phosphonylation of aliphatic amines [PDF]

, 2023
Despite remarkable progress in photocatalytic hydrogen atom transfer (HAT)-induced C(sp3)-H functionalization, achieving C(sp3)-H to C(sp3)-P transformation by the HAT process remains highly challenging due to P-reagents’ compatibility issues.
Weigang, Zhang, Jie, Wu, Zhexuan, Lei
core   +2 more sources