Materials Literature
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Abstract The effects of an organic phosphorus nucleating agent on the crystallization behavior and mechanical properties of poly(propylene) were investigated. As the concentration of nucleating agent increased from 0 to 0.8%, the tensile and flexural strengths of the nucleated poly(propylene) resin increased by 15%, t…
Zinc oxide nanoparticles coated with zinc aluminate have been prepared by performing Al2O3 precipitation on the precursor basic carbonate of zinc (BCZ) of zinc oxide. TEM shows that a homogeneous layer is formed on the surface of the zinc oxide nanoparticles, and the coated particle size is about 50–60 nm. The thickne…
Two molecule-based magnets, [Mn(2)(tea)Mo(CN)(7)].H(2)O, 1, and [Mn(2)(tea)Mo(CN)(7)], 2 (tea stands for triethanolamine), formed with the 4d ion building block, [Mo(CN)(7)](4)(-), Mn(II) ions, and an additional ligand, tea, have been prepared and structurally characterized by single-crystal X-ray analyses. Whereas 1…
Miscible blends of perdeuteriopoly(ethylene oxide) (d 4 PEO) and poly(methyl methacrylate) (PMMA) were studied using deuterium NMR over the concentration range of 0.5−30% d 4 PEO using 2−4 Larmor frequencies ranging from 31 to 76 MHz. Spin−lattice relaxation times and line widths were measured from 300 to 475 K. Over…
Abstract The interfacial adhesion between a wood fiber and a plastic matrix strongly influences the performance of wood‐fiber‐reinforced thermoplastic composites. Fiber surface modification with coupling agents is generally needed to induce bond formation between the fiber and polymer matrix. This study investigated t…
Abstract This article describes the preparation of novolac‐type phenolic resin/silica hybrid organic–inorganic nanocomposite, with a sol–gel process. The coupling agent was used to improve the interface between the organic and inorganic phases. The effect of the structure of the nanocomposite on its physical and chemi…
High refractive index optical thin films of nano-ZnS/polythiourethane (PTU) composites have been prepared via immobilization of thiophenol (PhSH)/mercaptoethanol (ME)-capped ZnS nanoparticles into a PTU matrix. PhSH/ME-capped ZnS particles with a diameter of 2–6 nm were synthesized by reacting zinc acetate with H2S in…
The conformation and melting of both hexadecylammonium ion, n -CH 3 (CH 2 ) 15 NH 3 +, and neutral hexadecylamine, n -CH 3 (CH 2 ) 15 NH 2, within the clay silicate galleries have been studied by Fourier transform infrared spectroscopy (FTIR). The conformational ordering of the alkyl tail in the confined system shows…
We present a study of p-type doping of CdTe and Cd$_{1-x}$Mn$_x$Te quantum wells from surface states. We show that this method is as efficient as usual modulation doping with nitrogen acceptors, and leads to hole densities exceeding $2 \times 10^{11}$ cm$^{-2}$. Surface doping was successfully applied to obtain carrie…
We present a new method of ab-initio electronic-structure calculation including the spin-fluctuation (SF) self-consistently. We start from the Luttinger-Ward functional given as the sum of the LDA functional plus the temperature-dependent part of the SF energy functional. The size of interactions used in it are determ…
Tri- and nonaferrocenyl thiol dendrons have been synthesized and used to assemble dendronized gold nanoparticles either by the ligand-substitution method from dodecanethiolate-gold nanoparticles (AB(3) units) or Brust-type direct synthesis from a 1:1 mixture of dodecanethiol and dendronized thiol (AB(9) units). The de…
Glasses containing mixtures of cations and anions of nominal compositions [Sb 2 O 3 ] x – [ZnCl 2 ] 1− x where x = 0.25, 0.50, 0.75, and 1.00, have been studied by means of neutron diffraction and Raman and Mössbauer spectroscopy. There is preferential bonding within the system with the absence of Sb–Cl bonds. Antimon…
(Pb, Nb)(Zr, Sn, Ti)O 3 antiferroelectric (AFE) thin films have been fabricated on LaNiO 3 /Pt/Ti/SiO 2 /Si wafers using a sol–gel process. The electric field-induced antiferroelectric-to-ferroelectric (AFE–FE) phase transformation behaviour and its dependence on the temperature were examined by investigating the diel…
The self-assembly of [W(CN)8]4− with cis-[CoIII(N4)Cl(OH2)]2+ {N4 = trien = triethylenetetraamine and tren = tris(2-aminoethylene)amine} in aqueous solution generates supramolecular assemblies: K2[CoIII(trien)]2[WIV(CN)8]2·8H2O·EtOH (1) and K2[CoIII(tren)]2[WIV(CN)8]2·9H2O (2). The crystal structure of 2 has been dete…
This study focuses on modelling the behaviour of single crystal tantalum in Stage 0 characterized by the large activity of edge dislocations and relative inactivity of screw dislocations. The multiplication of dislocation density is investigated using dislocation dynamics (DD) simulations and a dislocation density bas…
The optical properties of the antiperovskite superconductor MgCNi 3 have been calculated using the full-potential linearized augmented-plane-wave method within the generalized gradient approximation scheme for the exchange–correlation potential. In order to fully elucidate the optical properties of MgCNi 3 , the diele…
We discuss in this paper the magnetic and structural parameters of Fe/V and Fe/Co multilayers. The electronic structure, magnetic moments (spin and orbital) and Curie temperatures as well as the magneto-crystalline anisotropy are calculated using first principles theory. Although theory is fairly successful in reprodu…
Polarized Raman spectra of the calcium vanadium oxide bronze β-Ca 0.33 V 2 O 5 are measured in the temperature range between 300 and 20 K. The charge ordering phase transition at about 150 K is characterized by the appearance of new Raman-active modes in the spectra, and by anomalies in the electronic background scatt…
The increase of the curvature of the interface between the rigid mesogenic core and the aliphatic chains in the hexacatenar tridentate ligand L3 overcomes the considerable expansion brought by the complexation of bulky metallic cores, thus leading to organized cubic mesophases for monometallic zincII and lanthanideIII…
Molecular dynamics simulations have been performed for a large-scale system consisting of 400 000 atoms of liquid metal Al. To describe the complex microstructural evolutions in the liquid system during the rapid cooling processes, the tracing atom method and cluster bond-type index method have been used. It is demons…