Materials Literature
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Frustrated magnets often display spin-lattice coupled exotic ordered states in order to lift the degeneracy of their ground states. This implies the possibility that the magnetic ordering in the frustrated magnets can be controlled by application of uniaxial stress, which directly and anisotropically affects the latti…
Carbon nanotubes have shown great promise as a new class of electronic materials owing to the change in their properties with chirality of the nanotube. On one hand, they can rival the best metal and on the other, a semiconducting nanotube can work as a channel in a nano Field effect transistor. Carbon nanotube (CNT)…
In the present paper, attention is paid to synthesis and evolution swelling behaviour of a superabsorbent hydrogel based on pectin (Pec) and polyacrylonitrile (PAN) carriers for the controlled delivery of ephedrine. The physical mixture of pectin and polyacrylonitrile was hydrolyzed by NaOH solution to yield pectin-po…
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space grou…
Neutron crystallography for biomacromolecules was reborn in 1990’s, because a new neutron detector Neutron Imaging Plate (NIP) was successfully developed and installed at diffractoeters ; BIX-3, BIX-4 and others at reactor neutron sources in Japan and France, and it was found that NIP is so effective to collect Bragg…
Chromatographic separation of mixture leads to the isolation of molybdenum-tungsten mixed-metal clusters [MoW2S4(H2O)9] 4+ and [WMo2S4(H2O)9] 4+ . From the aqua ion the corresponding oxalato-derivatives as [MoW2S4(C2O4)3(H2O)3] 2-and [WMo2S4(C2O4)3(H2O)3] 2- were isolated. The peak positions of the two big bands in ea…
A new modulated structure consisting of periodic (11 (2) over bar0) stacking faults (SFs) in the alpha-Fe2O3 nanowires (NWs) formed by the thermal oxidation of Fe foils is reported, using a combination of high-resolution transmission electron microscopy (HRTEM) observations and HRTEM image simulations. The periodicity…
Neutron scattering study and measurements of magnetic and dielectric properties have been studied for quasi one-dimensional spin 1/2 systems which are formed of edge-sharing CuO4 square planes called CuO2 ribbon chains. Due to the geometrical characteristic of the crystal structure of these systems, the nearest-neighb…
We review polarized neutron scattering techniques using triple-axis spectrometers.
Spin-lattice coupling plays an important role in selecting the ground state in the geometrically frustrated magnets, since a small amount of structural distortion is sufficient to lift the ground state degeneracy and stabilize a long-range magnetic order. Ag2CrO2 consists of insulating triangular lattice planes of CrO…
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space grou…
Poly(vinyl pyrrolidone)/sodium dodecyl sulfate complex was applied as a probe to study the effect of benzyl alcohol on micellization behaviour of sodium dodecyl sulfate. It has been found that a critical concentration (cs), exists in the relative viscosity versus benzyl alcohol concentration plot. As the benzyl alcoho…
Decorative concrete floor coatings Toledo. Epoxy and Polyaspartic coatings for garage floors and concrete commercial properties.
Hyperbranched polyurethane (HBPU) samples are synthesized by two different methods from isophorone diisocyanate, 1,4-dihydroxybutane and diethanolamine generation by generation.And two series of samples are marked HBPU1s and HBPU2s.FTIR measurement is used to characterize the structure of the samples.DSC and TG measur…
This thesis focuses on the effect of nanofillers on the physical and electrochemical properties of polymer electrolytes. 30% PMMA-g-natural rubber (MG30) is doped with lithium triflate (LiTf) salt and composited with silicon dioxide (SiO₂) or aluminum oxide (A1₂O₃ ) nanofiller. The conductivity of the samples is measu…
We report our recent structural study on the polymer in room-temperature ionic liquid (IL) solutions by using neutron/X-ray scattering. Small-angle neutron scattering (SANS) measurement was made on poly(benzyl methaceyrate) (PBnMA) in fully deuterated 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide ([C2…
Polyrotaxane (PR) is a typical supramolecule, in which cyclic molecules are threaded onto a linear polymer chain. The cyclic molecules in PR can slide and rotate on the polymer chain. PR has been applied to a novel kind of polymer network, called “slide-ring (SR) gel”, which is prepared by cross-linking cyclic molecul…
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The results of the rate of cementation of Cu 2+ in CuSO4 solution and in presence of different concentration of amino acids at different ppm of Cu 2+ , different temperatures and different rpm are given. The energy of activation as well as thermodynamic parameters H * , G * and S * are discussed. It is found that the…
An entry from the Cambridge Structural Database, the world’s repository for small molecule crystal structures. The entry contains experimental data from a crystal diffraction study. The deposited dataset for this entry is freely available from the CCDC and typically includes 3D coordinates, cell parameters, space grou…