hot-melt extrusion is one of the most widely applied processing technologies in the plastic, rubber and food industry. today this technology has found its place in the array of pharmaceutical manufacturing operations. melt extrusion process are currently applied in the pharmaceutical field for the manufacture of a variety of dosage forms and formulations such as granules, pellets, tablets, supp...

Capillary rheometry simulates polymer extrusion in a simplified way. It allows the characterisation of polymers by means of determination of the viscosity function and extrudate swell. As regards viscous properties, there is still a lack of constitutive characterisation of rubber blends. In this contribution new concepts are presented how the viscous properties are computed without using common...

A mathematical model was developed to simulate fluid flow, heat transfer, and melting kinetics of starch in a co-rotating intermeshing twin-screw extruder (TSE). The partial differential equations governing the transport phenomena of the biomaterial in the extruder were solved by a finite element scheme. For validating the model, the predicted product pressure, bulk temperature at the entrance ...

Modeling of complex systems requires large and expensive computational systems. Costs processing time can be reduced by more than half in a well-managed cloud environment. the flow ethylene propylene diene monomer (EPDM) through Garvey die was achieved employing latest computer technology commercially available at modest cost. The description stress–strain behavior for EPDM done using Otswald-d...

Zein, the predominant protein in corn, may be used as an alternative to various commercial plastics. Plastics produced from zein tend to be brittle, so plasticizers such as triethylene glycol (TEG) and water were used in this study to alleviate brittleness. When zein is blended with water and subjected to heat and shear in a torque rheometer, zein readily generates aggregates that produce a rap...