نتایج جستجو برای: liquids

تعداد نتایج: 21511  

2017
Alpha-Oumar Diallo Benjamin Truchot Guy Marlair Christophe Len

This study is a consolidated overview on explosion and fire safety issues pertaining to ionic liquids. Indeed safety performance of ionic liquids relating to physico-chemical hazards is very rarely investigated as it is often perceived as a non-existing issue due to the lack of traditional flashpoint for these liquids. It focuses on the experimental evaluation of the fire hazard of imidazolium,...

Journal: :Physical chemistry chemical physics : PCCP 2013
Haiying Li Yunxiang Lu Weihong Wu Yingtao Liu Changjun Peng Honglai Liu Weiliang Zhu

In recent years, several specific imidazolium-based ionic liquids with halogen substituents on the imidazole ring as well as on the alkyl chains have been reported. In this work, noncovalent interactions in four halogenated ionic liquids, i.e. 2-bromo-/iodo- and 4,5-dibromo-/diiodo-1,3-dimethylimidazolium trifluoromethanesulfonates, were systematically investigated using density functional theo...

2016
Chong Wang

The MIT Faculty has made this article openly available. Please share how this access benefits you. Your story matters. We study possible quantum Uð1Þ spin liquids in three dimensions with time-reversal symmetry. We find a total of seven families of such Uð1Þ spin liquids, distinguished by the properties of their emergent electric or magnetic charges. We show how these spin liquids are related t...

2005
Andrew P. Abbott Thomas J. Bell Sandeep Handa Barry Stoddart

The application of ionic liquids as environmentally benign reaction solvents for synthesis and catalysis has received extensive recent attention. In this regard we have developed ionic liquids based on the cheap and readily available components choline chloride (ChCl; HOCH2CH2N(Me)3?Cl) and zinc chloride as alternatives to the more commonly employed alkyl imidazolium-aluminium chloride mixtures...

Journal: :Chemistry and physics of lipids 2016
Inkeri Kontro Kirsi Svedström Filip Duša Patrik Ahvenainen Suvi-Katriina Ruokonen Joanna Witos Susanne K Wiedmer

The effects of ionic liquids on model phospholipid membranes were studied by small-angle X-ray scattering, dynamic light scattering (DLS) and zeta potential measurements. Multilamellar 1-palmitoyl-2-oleoyl-sn-glycero-3-phosphocholine liposomes and large unilamellar vesicles composed of l-α-phosphatidylcholine (eggPC) and l-α-phosphatidylglycerol (eggPG) (80:20mol%) or eggPC, eggPG, and choleste...

2005
Matt Bennett Donald Leo

Ionic liquids have shown promise as replacements for water in ionic polymer transducers. Ionic liquids are non-volatile and have a larger electrochemical stability window than water. Therefore, transducers employing ionic liquids can be operated for long periods of time in air and can be actuated with higher voltages. Furthermore, transducers based on ionic liquids do not exhibit the characteri...

2016
Toru Kanbayashi Hisashi Miyafuji

The morphological and topochemical changes in wood tissues in compression wood of Japanese cedar (Cryptomeria japonica) upon treated with two types of ionic liquids, 1-ethyl-3-methylimidazolium chloride ([C2mim][Cl]) and 1-ethylpyridinium bromide ([EtPy][Br]) were investigated. Compression wood tracheids were swollen by both ionic liquids but their swelling behaviors were different in the types...

2015
Marco Heinen Simon K. Schnyder John F. Brady Hartmut Löwen

We introduce fractal liquids by generalizing classical liquids of integer dimensions d = 1, 2, 3 to a fractal dimension df . The particles composing the liquid are fractal objects and their configuration space is also fractal, with the same non-integer dimension. Realizations of our generic model system include microphase separated binary liquids in porous media, and highly branched liquid drop...

Journal: :Molecules 2009
Ichiro Minami

Current research on room-temperature ionic liquids as lubricants is described. Ionic liquids possess excellent properties such as non-volatility, non-flammability, and thermo-oxidative stability. The potential use of ionic liquids as lubricants was first proposed in 2001 and approximately 70 articles pertaining to fundamental research on ionic liquids have been published through May 2009. A lar...

Journal: :Physical review. E, Statistical physics, plasmas, fluids, and related interdisciplinary topics 1999
L Fabbian A Latz R Schilling F Sciortino P Tartaglia C Theis

We present mode-coupling equations for the description of the slow dynamics observed in supercooled molecular liquids close to the glass transition. The mode-coupling theory (MCT) originally formulated to study the slow relaxation in simple atomic liquids, and then extended to the analysis of liquids composed by linear molecules, is here generalized to systems of arbitrarily shaped, rigid molec...

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