The Natural rubber is a renewable source material widely used in the manufacture of automotive tire tread. The vulcanization results in a high thermodynamic stability and wide working range materials. However, after the ...

Polytetrafluoroethylene (PTFE) has excellent properties such as chemical inertness and useful mechanical properties at high and low temperatures. After melt, the PTFE viscosity is so high that the extrusion and injection ...

This work shows the development, construction, validation and application of an in-line colorimeter used for real time color quantification of the melted flow during polymer processing in the extruder. The device uses a ...

In the present work a prototype of a low angle laser light scattering was developed and installed in an extruder in order to operate in real time. The equipment was built by the research group of which the author is member, ...

In this work, we sought to modify PHB, processing it in the melted state, and to evaluate the effect of the modifications on its mechanical properties and biodegradation characteristics. The following systems were therefore ...

Nanocomposites of Plasticized PVC with organoclays have a large potential to improve the thermal resistance of PVC as well as its flame retardancy. However, a great problem in the production of PVC nanocomposites is the ...

Polymer profiles extrusion shows some peculiarity due to the flow behavior of these materials during the processing. On the other hand, the profile die design and tooling has been more a result of professional s expertise ...

One of the ways to follow the polymer degradation has been to calculate the average number of chain scissions (ns) that occurred during its thermomechanical history. The average can be extended for each molecular weight ...

The aim of this work is to monitor in-line, using an optical detector fitted at the extruder die exit, the formation of PP/MMT nanocomposites during polymer melt compounding. The intensity of the detector´s signal is ...

The objective of this work was to study the influence of the use of carbon black as infrared absorber to improve the PET resin heat-up during the stretching blow molding of bottles. It was investigated the correlation ...