Natural fibers are a material that is easily obtained from nature, both animals and plants. Using natural has been commercially applied in various fields, such as automotive construction, by mixing PPHI (Polypropylene High Impact) with injection molding forming plastic pellets. Pellets extruded pineapple fiber for composite, which requires composite pellet-making machine, combines two materials...

The effects of glycerol and moisture contents on the thermal transitions of whey protein isolate (WPI) powder-glycerol-water mixtures were studied. Mixtures with ratios of 100:0, 70:30, 60:40, and 50:50 WPI:glycerol on a dry basis (db) were preconditioned to 0.34 +/- 0.01 (25.4 +/- 0.4 degrees C) and 0.48 +/- 0.02 (25.9 +/- 2.2 degrees C) water activity. Differential scanning calorimetry (DSC) ...

This paper investigates new approaches for the blending and plastification of ceramic powder with a binder to form fused deposition (FDC) feedstock. The fabrication highly filled filaments was accomplished using granulation by agitation technique, followed twin-screw extruder homogenization single-screw filament extrusion. feedstocks are based on alumina (Al2O3) powders, which were prepared an ...

drawbacks, such as increasing the dosage, the administration frequency and the resultant occurrence of side effects. Furthermore, as the rate-limiting step in the absorption process for poorly water-soluble drugs is the dissolution rate of such drugs in the gastrointestinal fluids rather than the rapidity of their diffusion across the gut wall, it is important to improve the oral bioavailabilit...

Mathematical models of polymer melt flow in co-rotating twin-screw extruders are crucial to screw design and predict processing characteristics, such as pressure distribution, back-pressure lengths, degree filling, melt-temperature increase, drive power. Twin-screw modeling focuses predominantly on conveying elements, kneading blocks commonly represented with fictitious continuous flights, whic...

Extrusion is a continuous process and successful economic production depends on maintaining stable output and melt quality at an accurately controlled rate. Current screw design technology, the use of DC drives, computerized controllers and raw material testing help to deliver the melt to the extrusion die at relatively constant temperature, pressure and viscosity. However, even the slightest v...