Cookie Consent

Cookies are used for statistical purposes and to improve the site.
Cookies will be used after you click "Accept" or if you continue using
To find out more please review our Privacy Policy.


Capillary Dies in Capillary Rheometer

Gain an understanding about the selection of capillary rheometer dies that Dynisco produces for various applications. Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D


Laboratory Mixing Extruder as Spinning Tool to Fibrillate Droplet Phase of Polymer Blend Systems

Nowadays, composites are ubiquitous in many parts of modern societies such as constructions, textiles, nonwovens, and automobile industry. In composites, interface plays a pivotal role in final mechanical properties. Learn More

By Roozbeh Hajiraissi


Correlation of Melt Viscosity of Polyethylene Terephthalate to Solution Intrinsic Viscosity

Polyethylene terephthalate (PET) is a hygroscopic resin from the polyester family which absorbs moisture onto their molecular structure when they are exposed to the ambient air. This has a huge effect on the flow behavior and rheological parameters of the plastic melt. Learn More

By Azadeh Farahanchi


Characterizing Thermal Stability of Polymer Melts Using a Capillary Rheometer

A thermal stability test can determine the resistance of a polymer melt to a change in the molecular structure at the test temperatures. The results of this test depend on the temperature, residence time at that temperature, material formulation, presence of moisture and/or contaminates Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D


How Dynisco online rheometers can help PET recyclers?

Dynisco online rheometers can be easily installed in variety of extrusion lines and continuously measure the intrinsic viscosity parameters of the extrudates during an extrusion process. Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D


Extensional Viscosity – Rheological Significance of the Entrance Pressure Drop

Extensional/elongational viscosity measurements (melt strength) are of rheological importance in any plastic stretching process for example blow molding, sheet extrusion, blown film extrusion, fiber spinning, etc. as the plastic is constantly stretching or expanding in such processes. Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D


How Rheological Data from a Capillary Rheometer Can Help to Have a Better Metal Injection Molding (MIM) Process?

One of the key factors in any MIM process is the flow behavior of the feedstock during filling of of the mold. In order to have a defect free molding process (without jetting, short shot, sink mark, crack, etc.) with desired mechanical strength (tensile, flexural, failure stress, etc.) in the final products, understanding of the rheological properties of the binder and feedstock is necessary Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D


Detecting Polymers in Material Products

It can be very difficult, if not impossible, to achieve complete indentification of most polymer products. However, in most cases, this is usually not needed; what is needed is the separation, or identification, of numerous molding materials whose identity has been lost, or an indication of the type of material used to create a component. Learn More

By Dynisco


Correlation of ViscoIndicator Online Rheometer to a Laboratory Melt Flow Rate Tester

Online rheometers have been used increasingly in plastics processing and recycling industry to provide continuous data stream of rheological properties and real-time information on an extrusion process. This can beneficial for controlling of in-process product quality, reducing of waste stream, and increasing of process efficiency Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D


Flow Curve Behavior of Polymer Melts

Flow curves of polymer melts (the graph of viscosity versus shear rate in the log-log scale) has two distinct behavior of Newtonian and Power law. At very low shear rates the Newtonian behavior dominates where the viscosity is independent of the shear rate and it approaches the value of η_0 which has been named as the zero-shear viscosity Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D


Understanding the Shear Thinning Behavior of Thermoplastic Materials Using an Extrusion Plastometer (Melt Indexer)

In this blog our Rheological Scientist, Azadeh Farahanchi Ph.D. discusses how to understand plastic shear thinning behavior using a melt indexer Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D


How to Measure Polymer`s Apparent Melt Density using a Melt Indexer

Method A/B is a test that can be performed in a melt flow rate tester in order to calculate the value of the polymer`s melt density at a specific temperature Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D


Barrel Charging Procedure Before Running the Test in LCR7001

How to properly charge the barrel before starting a test in LCR capillary rheometer Learn More

By Azadeh Farahanchi, Rheological Scientist, Ph.D


Have A Question? Ask a Dynisco expert for more information.

  • Dynisco

    38 Forge Parkway,
    Franklin MA 02038

    +1 508 541 9400  

  • Dynisco Europe GmbH

    Pfaffenstr. 21, 74078,
    Heilbronn, Germany

    +49 7131 297 0

  • Dynisco-Viatran Instrument Sdn Bhd

    Lot 3615, Jalan SM 6/8
    32040 Seri Manjung, Perak, Malaysia

    +605 6884014