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Chemical Composition Distribution Services

Most polyolefin products are produced with incorporation of comonomers to reduce crystallinity and to extend the range of product performance. To define these copolymers, a chemical composition or comonomer incorporation parameter is required in addition to the molar mass distribution.

This is the case for instance of Linear Low Density Polyethylene (LLDPE), Low Density Polyethylene (LDPE) or Polypropylene (PP), where the incorporation of comonomers such as Butene, Pentene, Hexene or Octene results in short-chain branches or small amounts of Ethylene in the case of PP, that influence the crystallinity, final density and performance of the resin.

Chemical Composition Distribution curve (CCD) can be obtained by Crystallization Analysis Fractionation (CRYSTAF), Temperature Rising Elution Fractionation (TREF), Thermal Gradient Interaction Chromatography (TGIC) or Crystallization Elution Fractionation (CEF).

  • CRYSTAF Analysis

    Chemical Composition Distribution results in one single temperature cycle.
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  • TREF Analysis

    Chemical Composition Distribution results by the traditional TREF technique thanks to a fully automated analytical instrument.
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  • CEF Analysis

    New available technique to obtain the Chemical Composition Distribution in the shortest time.
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  • TGIC Analysis

    Chemical Composition Distribution for low crystallinity samples such as elastomers.
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