Equipment
CRYSTAF chemical composition distribution (CCD) grading
Crystallization analysis Fractionation (CRYSTAF) is a technique for measuring the chemical composition distribution (CCD) in polyolefins, which separates crystal components with different morphology or comonomer content according to their crystallizability.
Classification:
Preparative component analysis
Key words:
Product optimization
Detailed introduction:
Crystallization analysis Fractionation (CRYSTAF) is a technique for measuring the chemical composition distribution (CCD) in polyolefins, which separates crystal components with different morphology or comonomer content according to their crystallizability.
In this technique, separation and analysis are carried out in one step; during the crystallization cycle, the polymer solution is sampled while crystallization is carried out at a reduced temperature, and its concentration is analyzed using an infrared (IR) detector IR4. The concentration data obtained at each sampling temperature correspond to the integral curve of the chemical composition distribution (CCD).
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