Figure 2 - uploaded by Seyed Pooyan Sajjadi
Content may be subject to copyright.
Die swell of polymer, change in velocity profile.  

Die swell of polymer, change in velocity profile.  

Context in source publication

Context 1
... the acceleration of the molten polymer will be the cause of adhesion failure and finally the sharkskin as it was mentioned before. Moreover, exiting the die, the polymer chains will have the opportu- nity to relax and hence, die swell will occur as well ( Figure 2). ...

Similar publications

Article
Full-text available
This study reports on the development of a novel polymer processing approach that combines low-temperature (LT) processing and fibre direct compounding (FDC) to reduce the thermal stress on thermosensitive components that occurs during compounding and subsequent injection moulding (IM). Composites based on polyamide 6 (PA6) and cellulose fibres (Ce...
Article
Full-text available
Because final properties of nanoscale polymeric structures are largely determined by the solid-state microstructure of the confined polymer, it is imperative not only to understand how the microstructure of polymers develops under nanoscale confinement but also to establish means to manipulate it. Here we present a series of processing strategies,...

Citations

Article
We present the results of experimental studies into the computer-controlled fabrication of polylactic-co-glycolic acid (PLGA) scaffolds under conditions of diffusion and antisolvent phase separation of PLGA/tetraglycol (TG) solutions in aqueous media. The effect of the initial concentrations of the polymer solutions and the 3D printing process parameters on the type of the fiber structures formed was studied. The resultant scaffolds were found to be produced in the form of either fractal-like or spongy polymeric microstructures. The specific type of the structures formed was shown to depend on the intensity of the diffusion processes in the ternary system PLGA–TG–antisolvent. This approach can be used for highly efficient 3D printing of both microporous and hollow fiber biocompatible scaffolds of various architectonics.