Materials Literature
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Abstract In this work, the compatibility of poly(methyl methacrylate) (PMMA) and polystyrene (PS) polymers with their polyhedral oligomeric silsesquioxane (POSS) copolymers combined by solution blending is investigated, to determine the effect of incorporation of the POSS unit on polymer compatibility. The morphology…
Abstract Chemical modification of a chloromethylated polysulfone (CMPS) was performed by reacting the chlorometyl group with PH bond of 9,10‐dihydro‐oxa‐10‐phosphophenanthrene‐10‐oxide (DOPO). A kinetic study of phosphorylation of CMPS with different chlorine content was reported. The obtained polymers bearing cyclic…
Abstract Magnesium salt (M‐HOS) whisker and β‐nucleating agent were introduced into polypropylene and their effects on the crystalline structures, morphologies, mechanical properties, and thermal resistance of polypropylene (PP) were investigated. The results of wide angle X‐ray diffraction (WAXD), differential scanni…
Molybdenum (0–1 at. %) doped indium oxide thin films with high near-infrared (NIR) transparency and high carrier mobility were deposited on Corning-1737 glass substrates at 400 °C by a spray pyrolysis experimental technique. X-ray diffraction (XRD) analysis confirmed the cubic bixbyite structure of indium oxide. The p…
Arrays of highly ordered ZnO nanowires have been synthesized on polycrystalline Al-doped ZnO (AZO) buffer layers prepared on p-Si substrates (7–13 Ω cm) with assistance of a thermal deposition method. The diameter and interspacing of the nanowires have been controlled by the growth conditions and properties of AZO fil…
A series of gold catalysts supported on Fe 2 O 3 −TiO 2 with various iron contents were prepared. A FeO x −TiO 2 support was prepared via incipient-wetness impregnation with aqueous solution of Fe(NO 3 ) 3 on TiO 2 . A gold catalyst with a nominal loading of 1 wt % was prepared by deposition−precipitation at pH 7 and…
The solid solution of lead zirconate [PbZrO3 (PZ)] and lead magnesium tungstate [Pb(Mg1/2W1/2)O3 (PMW)] has been synthesized by the wolframite precursor method. The crystal structure, phase transformations, dielectric and thermal properties of (1−x)PZ-xPMW, where x=0.00–0.10, were investigated. The crystal structure o…
Abstract Nanocrystalline Mn‐doped zinc oxides Zn 1− x Mn x O ( x = 0–0.10) were synthesized by the sol–gel technique at low temperature. The calcination temperature of the as‐prepared powder was found at 350 °C using differential thermal analysis. A thermogravimetric analysis showed that there is a mass loss in the as…
The growth of silicon oxide on bare and SF6-etched silicon nanocrystals (Si-NCs), which were synthesized by an all gas phase approach, was investigated by examining the surface chemistry and optical properties of the NCs over time. Consistent with previous work in the low temperature oxidation of silicon, the oxidatio…
Abstract The mechanical, thermal, and morphological properties of polycaprolactone (PCL) and green coconut fiber (GCF) composites were evaluated. Blends containing acrylic acid‐grafted PCL (PCL‐ g ‐AA/GCF) exhibited noticeably better mechanical properties due to better compatibility between the two components. The dis…
A family of planar disc-like hexa-, octa- and decametallic Ni(II) complexes exhibit dominant ferromagnetic exchange. The deca- and octametallic clusters [Ni(II) (10)(tmp)(2)(N(3))(8)(acac)(6)(MeOH)(6)] (1, H(3)tmp=1,1,1-tris(hydroxymethyl)propane; acac=acetylacetonate) and [Ni(II) (8)(thme)(2)(O(2)CPh)(4)(Cl)(6)(MeCN)…
We discuss the properties of the transmission function in the k-space for a generic multi-layered structure. In particular we analytically demonstrate that a transmission greater than one in the evanescent spectrum (amplification of the evanescent modes) can be directly linked to the guided modes supported by the stru…
Free vibrations of zigzag single-wall carbon nanotubes (SWCNTs) of aspect ratio (length/diameter) ∼6 and with ends traction-free have been studied using molecular mechanics (MM) simulations with the MM3 potential. It is found that the frequencies of inextensional (the Love and the Rayleigh) modes of an (n, 0) SWCNT sa…
DOI: 10.1002/adma.200803726 The first entry of the affiliation in the above article is incorrect. The correct representation of the first part of the affiliation is as follows: Prof. Q.-H. Yang, Prof. Y. G. Yang, C. M. Chen, Y. F. Wen, Prof. M. Z. Wang Key Laboratory of Carbon Materials Institute of Coal Chemistry Chi…
Well-dressed: A new method was developed to produce thermosensitive nanocrystals (NCs) by coating the NCs with an amphiphilic copolymer consisting of poly(maleic anhydride-alt-1-octadecene) (PMAO) and poly(N-isopropylacrylamide) (PNIPAAm; see photograph of coated Fe3O4 NCs at 20 °C and 40 °C). The method is general fo…
Abstract The effect of nanoclay additive on the structure, morphology, and mechanical properties of polypropylene meltblown webs is reported here for the first time. Effect of nanoclay on the meltblown processing, resultant fiber web structure, and properties are discussed. Combination of wide‐angle x‐ray diffraction,…
We use a recently proposed method (Berthier, L.; Biroli, G.; Bouchaud, J.P.; Cipelletti, L.; El Masri, D.; L'Hote, D.; Ladieu, F.; Pierno, M. Science 2005, 310, 1797) to obtain an approximation to the four-point dynamic correlation function from derivatives of the linear dielectric response function. For four liquids…
Optical emission spectra of nanocrystalline zinc gallate (ZnGa2O4) and trivalent chromium ion doped zinc gallate (ZnGa2O4:Cr3+) are reported for different concentrations of the dopant ion. The measurements have been carried out over the temperature range between 77 and 296 K. The emission spectrum of nanocrystalline Z…
The stoichiometric tritungsten oxide cluster (W 3 O 9 ) deposited on the TiO 2 (110) surface has been investigated using first-principles density functional theory calculations. Various possible configurations mainly derived from molecular dynamics simulations have been considered. On the basis of the comparisons of t…
First principles electronic structure calculations on a free ${\text{CrSi}}_{12}$ cluster, a ${({\text{CrSi}}_{12})}_{2}$ dimer, and ${\text{CrSi}}_{12}$ clusters supported on Si(111) surfaces have been carried out within a gradient corrected density functional formalism using a supercell approach. The ground state of…