A new recorded presentation from Malvern Instruments
compares the use of Dilute Solution Viscometry (DSV) with that of traditional
glassware for measuring polymer intrinsic viscosity. Intrinsic viscosity
correlates directly with molecular weight, which is a critical variable for
polymers due to its controlling influence on processability and the mechanical
properties of the final product. Intrinsic viscosity is therefore used as part
of the specification for many commodity and engineering polymers.
‘Dilute Solution Viscometry (DSV) as an alternative to
traditional tube viscosity measurements' highlights how Malvern's Viscotek DSV
solution maximizes operator safety, by essentially eliminating the risk of
exposure to hot and hazardous solvents, while at the same time improving
measurement precision. It is free to download on-demand from Malvern's
knowledge base at
http://bit.ly/MALTTVS
The Viscotek DSV solution uses advanced pressure sensing
technology and ASTM approved methodology in a closed loop system. It combines
automated sample preparation and low solvent consumption with highly accurate
viscosity measurement. It is self cleaning, self calibrating, and requires
minimal maintenance. By reducing human interaction, the automated DSV solution
not only ensures maximum safety but also reduces the potential for human error
and delivers high analytical throughput .
Capable of automated, highly sensitive measurements of
samples in a wide variety of solvents, and with options for high temperature
measurement, the Viscotek DSV solution offers significant application
flexibility. Common applications include: Polyethylene Terephthalate (PET) in
Phenol/Trichloroethylene mixture, Polyethylene (PE) or Polypropylene (PP) in
Decalin or Tetralin, Polyvinyl Chloride (PVC) in Cyclohexanone, Nylon in Formic
Acid, and Hyaluronic Acid or Cellulosics in aqueous solutions, among others.
Further information on the Viscotek DSV solution and other
polymer measurement systems from Malvern can be found at:
www.malvern.com
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