Materials Literature
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Abstract The crystallization of poly(ethylene oxide) (PEO) in the presence of silica nanoparticles (SiO2 NPs) was investigated in terms of heterogeneous nucleation of SiO2 NPs using polarizing optical microscopy and differential scanning calorimetry. The content and surface functionality of SiO2 NPs were considered as…
The solubility of gypsum (CaSO 4 ·2H 2 O) in ammonium solutions plays a significant role to prevent gypsum scaling on the heater and tower in the treatment of ammonium-N wastewater bearing sulfate ions by the steam stripping process. In this work solubilities of calcium sulfate dihydrate in NH 4 Cl, NH 4 NO 3, and mix…
Graphene/NiO-MnO 2 nanocomposite was formed by a simple chemical precipitation method using a chelating agent and Ni and Mn hydroxides on graphene. The graphene/NiO-MnO 2 was pretreated by ultrasonication followed by thermal annealing at 300°C for 2 h. The capacitive behavior of the graphene/NiO-MnO 2 electrode was in…
Reported here is the low-temperature growth of multiple-stack high-density ZnO nanoflower/nanorod structures on polyethylene naphthalate (PEN) substrates derived from the surface modification of ZnO seed layers using an atmospheric-pressure plasma jet (APPJ) treatment. The plasma treatment could provide several advant…
The vibrational and structural properties of modified double-wall carbon nanotubes (DWNTs) were investigated by high-pressure resonance Raman scattering. We studied bromine-intercalated DWNTs grown by chemical vapor deposition (CVD) and ${}^{13}$C${}_{60}$ peapod-derived DWNTs in comparison with pristine CVD-grown DWN…
Sterically unprotected thiophene/phenylene co-oligomer radical cation salts BPnT(·+) [Al(OR(F))(4)](-) (OR(F)=OC(CF(3))(3), n=1-3) have been successfully synthesized. These newly synthesized salts have been characterized by UV/Vis-NIR absorption and EPR spectroscopy, and single-crystal X-ray diffraction analysis. Thei…
Abstract Acrylic copolymers are prepared by radical polymerization of 2‐ethylhexyl acrylate, ethyl acrylate, and acrylic acid followed by crosslinking to manufacture the pressure‐sensitive adhesives (PSAs) for silicon wafer protection. Both higher reliability and wettability are required for the protective acrylic PSA…
Abstract Submicrometer core‐shell polybutadiene‐graft‐polystyrene (PB‐g‐PS) copolymers were synthesized by emulsion grafting polymerization with 1,2‐azobisisobutyronitrile as an initiator. Then, PB‐g‐PS copolymers were blended with high‐impact polystyrene (HIPS) and PS to prepare HIPS/PS/PB‐g‐PS. It is generally accep…
The applications of ferroelectric thin films such as the sensitivity of nonvolatile ferroelectric random access memories are closely linked with large remnant polarization. The high-T(C) (1-x)Bi(Zn(1/2)Zr(1/2))O(3)-xPbTiO(3) (x = 0.7-0.9) thin films with high (100) orientation were fabricated on Pt(111)/Ti/SiO(2)/Si s…
We report a catalytic eight-cobalt-capped α-Keggin polyoxoazocobaltite with a highly symmetric structure completely constructed from the late transition-metal Co(II) as a poly atom, [Co(20)(OH)(24)(MMT)(12)(SO(4))](NO(3))(2)·6H(2)O (1) (MMT: 2-mercapto-5-methyl-1,3,4-thiadiazole). To the best of our knowledge, this is…
Abstract Degradable polyurethane/soybean protein (PU/SP) shape‐memory polymer blends are synthesized using an environmentally‐friendly aqueous dispersion technique. The effects of SP concentration on the blend miscibility, thermal properties, hydrolytic degradation, and shape‐memory behavior are investigated. The shap…
A series of calcium complexes containing oxalamidinate ligands is described. Reactions of oxalamidinate ligand precursors, [PhN=C{NH(CH2)2OMe}-C{NH(CH2)2OMe}=NPh] (1), [PhN=C{NH(CH2)2NMe2}-C{NH(CH2)2NMe2}=NPh] (2), [Ph(TriMe)N=C{NH(CH2)2OMe}-C{NH(CH2)2OMe}=NPh(TriMe)] (3), [Ph(TriMe)N=C{NH(CH2)2SMe}-C{NH(CH2)2SMe}=NPh…
Herein we demonstrate that graphene production could be implemented through the chemical reduction of an exfoliated graphite oxide (GO) suspension using a sodium hypophosphite–hydrochloric acid mixture. The structure and composition of the resultant reduced GO (RGO) were confirmed by XRD, XPS and Raman spectra. The RG…
A new route is described that enables the design of polar materials using racemic basic building units (BBUs). Λ- and Δ-[Cu(H 2 O)(bpy) 2 ] 2+ complexes in noncentrosymmetric [Cu(H 2 O)(bpy) 2 ] 2 [HfF 6 ] 2 ·3H 2 O and centrosymmetric [Cu(H 2 O)(bpy) 2 ][BF 4 ] 2 reveal that racemic BBUs in the solid state can lead d…
While amorphous calcium carbonate (ACC) has been widely exploited as a precursor to crystalline calcium carbonate in solution, the synthetic potential of crystallising ACC in the solid state has received little attention. Building on our recent results which demonstrate that additives occluded within ACC can facilitat…
Irradiation effects in polyethylene and cellulose were examined using molecular dynamics simulations. The governing reactions in both materials were chain scissioning and generation of small hydrocarbon and peroxy radicals. Recombination of chain fragments and cross-linking between polymer chains were found to occur l…
Using scanning tunneling microscopy and density functional theory (DFT), we have analyzed the local electronic properties of (111)-oriented MgO nanoislands on Au(111). Conductance and barrier-height measurements revealed substantial modulations in the electronic structure and electrostatic potential across the islands…
Abstract Transparent cast films of linear low density polyethylene (LLDPE) with nanoclay up to 10 wt % were prepared in one step process using an ultrasonically assisted compounding extruder operating at various ultrasonic amplitudes combined with film casting machine operating at various take up speeds. Thermal, rheo…
The influence of symmetry breaking in a planar metamaterial on transparency effect is numerically investigated. The planar metamaterial's cell is formed by three parallel metal wires. From numerical simulation results, we can see that the transparency effect results from the asymmetric coupling between the cut wires.…
A novel thermotropic liquid-crystalline (LC) biocopolymer, poly{trans-3-methoxyl-4-hydroxycinnamic acid (MHCA: ferulic acid)-co-trans-3,4-dihydroxycinnamic acid (DHCA: caffeic acid)}, was synthesized by a thermal acidolysis-polycondensation of MHCA and DHCA, efficiently catalyzed by Na2HPO4. When the MHCA composition…