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CRYSTEX® Overview

The CRYSTEX® instrument was considered a breakthrough technology automation of the amorphous fraction in polypropylene copolymers, also referred to as xylene solubles measurement in polypropylene copolymers when it was first lauched. Although this system is still commercially available, it is now being replaced for two newer and improved versions designed to be used in either R&D Laboratories (CRYSTEX® 42) or Production Plants environments (CRYSTEX® QC).

In the CRYSTEX® instrument, the crystalline and amorphous fractions separate from each other through dissolution – crystallization temperature cycle within closed stainless steel vessels (up to three samples can be analyzed at a time). Accurate and precise quantification is achieved employing an optimized infrared detector, with no need for manual volume measurements or even to use the balance at all.

This method was embraced by the industry as a robust and reliable alternative to traditional gravimetric methods (ISO 6427 part B, ASTM D-5492), due to the dramatic reduction of time spent by the analyst and laboratory supplies, the outstanding precision and the multi-detection capabilities.

The built-in infrared detector IR4 measures the amount of Ethylene incorporated in the resin in the whole sample as well as in the amorphous fraction. A capillary viscometer can be installed to collect the intrinsic viscosity data in the same analysis, so that the most relevant parameters for a comprehensive characterization of the material are available in a short time using a single instrument.

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