نتایج جستجو برای: ethylene carbonate

تعداد نتایج: 53462  

Journal: :European cells & materials 2008
H J Sung K M Sakala Labazzo D Bolikal M J Weiner R Zimnisky J Kohn

Synthetic biomaterials can be used as instructive biological milieus to guide cellular behaviour and function. To further realize this application, we synthesized a series of structurally similar hydrogels and tested their ability to modulate angiogenesis. Hydrogels were synthesized from poly(DTE-co-x% DT carbonate) crosslinked by y% poly(ethylene glycol) (PEG). Hydrogel desaminotyrosyl tyrosin...

2001
Xuerong Zhang James K. Pugh Philip N. Ross

It is now generally agreed that the electrochemical reduction of ethylene carbonate ~EC! plays an important role in the formation of an effective solid electrolyte interface layer on the carbon anode in lithium-ion cells. However, neither the composition of this layer nor the reaction pathways involved in its formation have been clearly established. We report reflectance infrared spectra from a...

Journal: :Batteries & supercaps 2023

In this study, the formation of dicarbonate degradation products ethylene carbonate‐based carbonate mixtures containing dimethyl carbonate, ethyl methyl or diethyl that were combined with lithium potassium metal, is investigated. It shown by NMR and GCMS dioxahexane dioate, dioate are formed from reactants to different extents and, in particular, surface initiates fast corresponding products. E...

Journal: :The Journal of chemical physics 2014
Sandra Luber

We describe a novel approach for the calculation of local electric dipole moments for periodic systems. Since the position operator is ill-defined in periodic systems, maximally localized Wannier functions based on the Berry-phase approach are usually employed for the evaluation of local contributions to the total electric dipole moment of the system. We propose an alternative approach: within ...

Journal: :Green Chemistry 2023

The carbonatation of semi-crystalline [ethylene – glycidyl methacrylate]-based polymers (Lotader® grades) was achieved using carbon dioxide as reagent and quaternary ammonium salts organocatalysts to form cyclic carbonate moieties on...

Journal: :Green Chemistry 2023

A versatile way of recycling molecular catalysts is presented by using ethylene carbonate (EC) as a solvent in multiphase system. EC liquid at reaction temperature and solid room temperature, trapping the catalyst to enable easy separation.

Journal: :Physical chemistry chemical physics : PCCP 2012
Elena Groppo Adriano Zecchina Caterina Barzan Jenny G Vitillo

A new heterogeneous catalyst for CO(2) activation was identified in the Cr(II)/SiO(2) Phillips catalyst, one of the most important catalysts used industrially for olefin polymerization. Interestingly, it was found that Cr(II)/SiO(2) strongly activates CO(2) already at room temperature, making it available for chemicals synthesis. A preliminary attempt in this direction was done by following the...

Journal: :Molecules 2016
Bassam Nohra Laure Candy Jean-François Blanco Yann Raoul Zéphirin Mouloungui

Glycerol carbonate acrylate is a 5-membered cyclic carbonate synthesized from glycerol that is used as a chemical coupling agent and has proven highly suitable for use in the synthesis of multifunctional polyhydroxyurethanes (PHUs). The multifunctionality of the structure of PHUs is determined by the density of the carbon-amine groups generated by the Aza-Michael reaction and that of the uretha...

2016
Andreas Hofmann Matthias Migeot Lukas Arens Thomas Hanemann

Temperature-dependent viscosity, conductivity and density data of ternary mixtures containing 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)azanide (EMIM-TFSA), ethylene carbonate (EC), and lithium bis(trifluoromethanesulfonyl)azanide (Li-TFSA) were determined at atmospheric pressure in the temperature range of 20 to 80 °C. Differential scanning calorimetry (DSC) measurements were pe...

Journal: :Journal of the Ceramic Society of Japan 2009

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