This paper reports the influence of post-melt impeller speed, post-melt processing time, binder concentration and particle size of bulk material on the sphericity of pellets produced by melt pelletization in a high shear mixer. Lactose was used as the bulk material with polyethylene glycol 3000 as a meltable binder. The sphericity of pellets was found to be affected by post-melt impeller speed ...

A study utilizing isotactic poly(4-methyl-1-pentene) (PMP) was undertaken to investigate a three stage process (melt-extrusion/annealing/uniaxial-stretching) (MEAUS) employed to produce microporous films. The results of this study will be reported in the course of two papers. In this first part, three PMP resins were melt-extruded into tubular films (blowup ratio; BUR = 1), where the resins eac...

In laser powder bed fusion (LPBF), the stability of melt pool dynamics determines overall quality a manufactured component. this work, numerical model LPBF process was developed in order to study and fully understand behavior dynamics. The takes into account most manufacturing parameters, thermophysical properties, an enhanced thermal conductivity approach, volumetric heat source precisely simu...

Abstract Additive manufacturing (AM) offers unique possibilities in comparison to conventional processes. For example, complex parts can be manufactured without tools. metals, the most commonly used AM process is laser-powder bed fusion (L-PBF). The L-PBF prone disturbances, hence maintaining a consistent part quality remains an important subject within current research. An established indicato...

aluminum is very sensitive to oxidation reactions. if a fresh surface of melt is exposed to air, it oxidizes quickly and an oxide layer covers the melt surface. new oxide films formed in a very short time during casting are thin and folded. the metal surface can be folded and create a double-oxide film as a result of the melt turbulence. the entrance of this double-oxide film into the melt is o...

It is well established in literature that, when processing intermetallic γ-TiAl components by electron beam powder bed fusion, a banded microstructure frequently formed because of an inhomogeneous Al distribution since more pronounced evaporation occurs at the top melt pool. This feature particularly promoted highly energetic process parameters (high currents, slow speeds, narrow line offsets) ...

Abstract: Solid dispersion (SD) is one of the oldest and widely utilized techniques to improve solubility slowly dissolving drugs. A variety pharmaceutically compatible additives using different emerging technology used for preparing SDs. Multiple approaches were designed prepare SDs by such as kneading, co-milling, fusion, solvent evaporation various solvent-associated methods. The selection a...

In this paper, we present the results of dispersion thermodynamically immiscible polypropylene (PP) and ethylene-propylene triple synthetic rubber (EPTSR) polymer blends using Solution-Enhanced Dispersion by Supercritical Fluid (SEDS) technique at operation conditions in pressure range (8 to 25) MPa temperatures t = 40 °C 60 °C. The kinetics crystallization phase transformation obtained convent...