Materials Literature
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Polymers are often blended with additives (e.g., polymers, clays) to produce composite materials having desirable physical properties that reflect synergy between the blend constituents. Though polymer blends with small-molecule nematic liquid crystal phases have been investigated (primarily for displays), related mat…
A systematic study based on an ab initio calculation within a local spin density approximation is applied to material design of GaAs- and GaP-base doped by 3 d transition metals. It is found that the ferromagnetic (FM) state is ready to achieve by V-, Cr- and Mn-doped GaP and GaAs. (Ga, Cr)P and (Ga, Cr)As are the mos…
To date, a number of ceramic oxides with the perovskite structure have been proposed as membrane materials for the selective separation of oxygen and the partial oxidation of hydrocarbons due to their high oxygen permeation fluxes. In contrast, their instability under an oxygen pressure gradient and consequent lattice…
Abstract A series of odd‐odd polyamides were prepared through step‐heating melt‐polycondensation of undecanedioic acid with various diamines. The synthesized nylons were characterized comprehensively by means of elemental analysis, fourier‐transform infrared (FTIR) spectroscopy, nuclear magnetic resonance (NMR), Raman…
Abstract Poly(ethylene terephthalate) (PET) and poly(ethylene glycol) (PEG) copolymers crosslinked with glycerol and sulfoisophthalate (SP) were prepared to investigate the feasibility of fabricating smart vibration‐controlling composite laminate. The composition of glycerol and SP was varied to get a copolymer with t…
The hydrogen motion in poly(vinyl ethylene) (1,2-polybutadiene) in the alpha-relaxation regime has been studied by combining neutron spin echo (NSE) measurements on a fully protonated sample and fully atomistic molecular dynamics simulations. The almost perfect agreement between experiment and simulation results valid…
Abstract We present the dynamics of the composition fluctuations and pattern formation of two‐component systems in both single‐phase and two‐phase states as studied by time‐resolved small‐angle neutron scattering and light scattering. Two‐component systems to be covered here include not only dynamically symmetric syst…
We report the growth of oriented nanowires of manganites within the pores of anodic alumina (AAO) templates. The processing of stoichiometric nanowires of La 0.67 Sr 0.33 MnO 3 (LSMO) at relatively low temperatures (870 K) is greatly aided by the linear chain polymer cation complex formed by ethylene glycol. The nanow…
Abstract The temperature‐dependent conformational change of poly( N ‐isopropylacrylamide) (PNIPAM) brushes in D 2 O was investigated as a function of the molecular weight ( M ) at a high grafting density with neutron reflection. PNIPAM chains with three different M values were grafted at the same high surface density…
Abstract Addition of organic fillers to post‐consumer recycled plastics can give rise to several advantages. First of all, the cost of these fillers is usually very low, the organic fillers are biodegradable contributing to an improved environmental impact and, last but not least, some mechanical and thermomechanical…
Peptide LYS (11-36), derived from the beta-sheet region of T4 lysozyme, forms an amyloid fibril in aqueous trifluoroethanol (TFE) at elevated temperature. The peptide has a moderate alpha-helix content in 20 and 50% (v/v) TFE solution; large quantities of fibrils were formed after incubation at 55 degrees C for 2 week…
We consider anisotropic colloidal particles with dumbbell or lens shapes that are immersed in a critical binary fluid mixture. The orientation-dependent long-ranged universal interactions mediated by the critical solvent between a particle and a wall or between two particles are investigated for mesoscopic particle si…
We have studied the structures of single-wall carbon nanotube bundles with and without hydrostatic pressure by using constant pressure molecular dynamics methods. The structure is found to be strongly dependent on the symmetry of the tubes, and only $(6n,\phantom{\rule{0.3em}{0ex}}6n)$ tubes could be assembled into an…
Abstract A series of sol‐gel derived organic–inorganic hybrid materials consisting of organic poly(methyl methacrylate) (PMMA) and inorganic titania (TiO 2 ) were successfully synthesized by using 2‐hydroxyethyl methacrylate (HEMA) as coupling agent. In this work, HEMA is first copolymerized with methyl methacrylate m…
Solubilities of CaCrO 4 in water from 110 °C to 160 °C and aqueous sodium chromate solution from 25 °C to 80 °C were measured. From these data, activity coefficients were calculated and compared with Bromley's method. The results agree. The standard enthalpy of formation and standard Gibbs free energy of formation of…
Abstract Recycled low density polyethylene (R‐LDPE) has been reactively compatibilized with butadiene rubber (BR) by using small additions of reactive polyethylene copolymers and reactive BRs to produce thermoplastic elastomers (TPEs). TPEs were characterized by thermogravimetric analysis (TGA), differential scanning…
Solubilities of calcium sulfate hemihydrate in the low-concentration range from (0 to 3.5) mol·kg -1 (equivalent to mol·kg -1 H 2 O) of sulfuric acid solutions at 100 °C (373 K) were measured. The measured solubilities were compared with available literature studies and simulated with empirical equations.
Oil sludge is one of the major industrial wastes that needs to be treated for the refinery or petrochemical industry. Efforts have been made to convert the oil sludge into available resources such as lower molecular weight organic compounds and carbonaceous residues. In this study, the oil sludge from the oil storage…
Low-acceleration-voltage electron irradiation effects on single-walled carbon nanotubes were studied by resonant Raman spectroscopy. The irradiation at acceleration voltages of 0.5 to 25 kV was found to extinguish the characteristic optical property of the nanotubes and reduce their tolerance against annealing in air,…
Large-scale and uniform Dy(OH) 3 nanorods have been successfully prepared by a simple hydrothermal method. Subsequent thermal decomposition of the as-prepared Dy(OH) 3 nanorods produced Dy 2 O 3 nanorods. X-ray diffraction (XRD), field-emission scanning electron microscopy (FESEM), transmission electron microscopy (TE…