Chemical Composition Distribution

TREF


Polyolefins and Polymer Char's TREF is the first automated analytical instrument that performs Temperature Rising Elution Fractionation (TREF) to characterize Chemical Composition Distribution (CCD). The concentration of sample is measured bt IR4 detector with comonomer information if a composition sensor is added.

Combination of CRYSTAF-TREF can be done by converting TREF. The same hardware of TREF still applicable to CRYSTAF-TREF. This technique provide a complementary information on CCD in some complex resin.

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TREF

  • Five crystallization vessels to analyze up to 5 samples with no supervision required.
  • Analysis time of 6 hours per sample under standard conditions.
  • Fully automated process with no solvent handling, including a final cleaning of the lines and vessels.
  • No manpower and no solvents handling along the whole process.
  • Low solvent consumption.
  • Infrared Detector IR4 incorporated, with the possibility of adding a composition sensor for methyls or carbonyls measurement.
  • Virtual Instrumentation software with whole control of the instrument hardware and process.
  • Possibility of calibrating the instrument to obtain the CCD curve in comonomer content units.
  • Possibility of subambient capability (down to -20ºC) for low crystallinity samples.
  • Possibility of remote control connection to allow a fast diagnosis.
  • Possibility of adding a Viscometer detector.
  • Easily convertible to a CRYSTAF-TREF combined instrument.

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