Materials Literature
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Hydroxyapatite (Ca 10 (PO 4 ) 6 (OH) 2 , HA) fibers were prepared by electrospinning a precursor mixture of Ca(NO 3 ) 2 ·4H 2 O and (C 2 H 5 O) 3 PO with a polymer additive, followed by a thermal treatment. The X‐ray diffraction (XRD) analysis of the annealed composite fibers revealed that pure HA phase could be obtai…
Abstract The effect of accelerated UV‐aging on properties of PP/wood‐fiber composites has been studied. Plates containing 0, 25 and 50 wt% wood‐fibers were subjected to accelerated UV‐aging in a QUV weatherometer for up to 8 weeks. Stabilization against UV‐degradation was made by adding 3% of a UV stabilizer. The resu…
A new ceramic freeze‐casting technique capable of manufacturing near room temperature with a sublimable vehicle was accomplished. Fluid‐concentrated slurries of Al 2 O 3 powder in molten camphene (C 10 H 16 ) were prepared at 55°C. These slurries were quickly solidified (frozen) at room temperature to yield rigid soli…
When a water droplet spreads on a vertically aligned nanorod surface, the nanorod array will deform into statistically percolated patterns. This nanocarpet effect has been investigated for Si nanorods. Three distinct morphologies were found: a center region due to the water droplet impact, a tilting region due to grav…
Abstract The solubility and diffusivity of supercritical carbon dioxide (sc‐CO 2 ) in low‐density polyethylene (LDPE), high‐density polyethylene (HDPE), polypropylene (PP), ethylene‐ethylacrylate copolymer (EEA) and polystyrene (PS) were measured at temperatures from 150°C to 200°C and pressures up to 12 MPa by using…
We present a Raman and surface-enhanced Raman scattering (SERS) study of the following proteins containing S-S group(s): alpha chymotrypsin (alpha-CHT), insulin, lysozyme, oxytocin (OXT), Streptomyces subtilisin inhibitor (SSI), and trypsin inhibitor (STI). The SERS study is performed in order to understand the adsorp…
We present a multiscale modeling approach to study oxygen diffusion in cubic yttria‐stabilized zirconia. In this approach, we employ density functional theory methods to calculate activation energies for oxygen migration in different cation environments. These are used in a kinetic Monte Carlo framework to calculate l…
An orifice flowmeter was used to measure the extensional viscosity of several non-pigmented fluids and paper coating colors containing calcium carbonate as pigment in the context of a jet coating application. The orifice flowmeter was first calibrated in terms of a dimensionless Euler number versus Reynolds number cur…
Particle fluid separation is studied in the case of slow squeezing flow of dense clay suspensions. The fluid pressure gradient generated by the test induces heterogeneity in the sample. Experimental water content measurements at different time points through the test allow the quantification of this separation phenome…
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The determination of flow curves and the apparent viscosity curves at 28°C of creams containing human leukocyte alpha interferon as active principle is presented in this paper. These creams are used for the treatment of papiloma virus and herpes simplex. It is demonstrated that their behaviour corresponds to a thixotr…
Associating the well known advantages of hybrid materials to the wide potential of nanomaterials, the new and featuring class of polymer nanocomposites turned into one of the most intensively researched areas. This review highlights recent developments in the field of the synthesis of polymer based nanocomposites. Imp…
The Si 3 N 4 thin film is prepared by MWECR-PECVD at different deposition temperature and the structure of the Si 3 N 4 thin film is investigated. The results indicate that the structure of the Si 3 N 4 thin film prepared at low deposition temperature is in the amorphous phase. However, when the deposition temperature…
In an unprecedented transformation, amide ligands are found to attack the imine carbon centers of tridentate Schiff base ligands attached to tin. The process is reversible, and the resultant (masked) amide species can be exploited as latent single-site initiators for the controlled polymerization of rac-lactide.
The structural, magnetic, and electrotransport properties of La 1− x Sr x MnO 3− x /2 (0≤ x ≤0.30) manganites with perovskite structure are investigated experimentally as a function of oxygen deficiency. In the solid solutions La 1− x Sr x MnO 3 , a change in the type of symmetry of the unit cell is observed at x =0.1…
We investigate the linear and nonlinear electric polarizabilities of small Al 4 M 4 (M = Li, Na, and K) clusters. Quantum chemical calculations reveal that these compounds exhibit an exceptionally high magnitude of linear and nonlinear optical (NLO) coefficients which are orders of magnitude higher than the convention…