Fractionation can be caused by a variety of chemical, biological, or physical processes and is employed in various areas of science, engineering and technology.
Fractionation systems are designed to separate an analyte from a sample into equal portions or fractions. It does so in accordance with either the analytes physical or chemical properties, such as by size, density, or bonding ability. In column chromatography, for example, fractionation occurs by difference of affinity whereas in cell fractionation, the cells components are fractioned out by difference in mass. Fractionation instruments provide hands-off, programable, and repeatable options for separating desired samples.
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| Company | Polymer Char | Polymer Char | Polymer Char | Polymer Char | Polymer Char |
| Item | CEF Instrument | CRYSTAF-TREF Instrument | CRYSTEX® QC Instrument | TGIC Instrument | TREF Instrument |
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| Catalog Number | CEF | CRYSTAF-TREF | CRYSTEX QC | TGIC | TREF |
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| Description | Crystallization Elution Fractionation (CEF) is a new approach for measuring Chemical Composition Distribution (CCD) in polyolefins that combines the separation mechanisms of CRYSTAF and TREF. The instrument includes the capability of performing TREF and TGIC* techniques.
The instrument can analyze Crystallization Elution Fractionation (CEF) is a new approach for measuring Chemical Composition Distribution (CCD) in polyolefins that combines the separation mechanisms of CRYSTAF and TREF. The instrument includes the capability of performing TREF and TGIC* techniques.
The instrument can analyze up to 42 samples a day with disposable glass vials of 10 or 20 mL. The virtual instrumentation software controls the full process; therefore, no manpower is required. At the end of each sample analysis, the lines and the column are rinsed and the instrument can continue with the analysis of the next sample in the queue.
The concentration of the sample is measured by an Infrared detector, which also provides information about its comonomer content. More information on molar mass composition interdependence can also be obtained by adding a Viscometer detector. Optionally, the TREF column can be replaced by a TGIC* column in order to separate by adsorption and reach the composition range of elastomer resins.
Features - Fully automated CEF, TREF and TGIC* techniques (CCD measurement).
- No manpower required.
- No handling of solvents.
- Low solvent consumption.
- Automated rinsing at the end of the analysis.
- Subambient operation (down to -20°C) for low crystallinity samples.
- 42 samples can be analyzed sequentially and automatically with analysis time as short as 30 minutes per sample for high throughput analysis or as long as desired for high resolution analysis.
- Easily interchangeable Infrared Detectors; IR5 MCT for outstanding sensitivity in concentration and composition, and IR4 with carbonyls capability.
- Possibility of adding a Viscometer detector.
- Excellent reproducibility.
- Possibility of performing TGIC* by exchanging the column.
... Read More | The CRYSTAF-TREF instrument is a very convenient option when needing to analyze the CCD in Polyolefins, since either CRYSTAF or TREF techniques can be performed just by changing the configuration of the equipment.
Features - Possibility of running CRYSTAF or TREF techniques in the same instrument.
The CRYSTAF-TREF instrument is a very convenient option when needing to analyze the CCD in Polyolefins, since either CRYSTAF or TREF techniques can be performed just by changing the configuration of the equipment.
Features - Possibility of running CRYSTAF or TREF techniques in the same instrument.
- Full automation of the CRYSTAF and TREF techniques to measure the CCD
- 5 samples can be analyzed with no supervision required; done sequentially in TREF mode with an analysis time of 6 hours/sample, and simultaneously in CRYSTAF mode with a total analysis time of 8 hours.
- Possibility of subambient operation (down to -20ºC) for low crystallinity samples
... Read More | CRYSTEX® QC measures the Soluble Fraction % (amorphous fraction) in polypropylene and other polyolefin resins.
This instrument is an automated alternative to the traditional wet chemistry method based on xylene solubility, known for being time consuming and requiring constant manual CRYSTEX® QC measures the Soluble Fraction % (amorphous fraction) in polypropylene and other polyolefin resins.
This instrument is an automated alternative to the traditional wet chemistry method based on xylene solubility, known for being time consuming and requiring constant manual handling of solvent at high temperature. CRYSTEX® QC is easy to operate and obtains the amorphous phase content in a short time. It eliminates the need to handle solvent manually and uses less flammable solvents than Xylene (TCB or oDCB), increasing the safety level in the laboratory.
The instrument automates the entire analysis process, including dissolution, separation of the soluble fraction from the crystalline matrix, and analysis by the online detectors.
Precise quantification is achieved by means of an infrared detector that also delivers ethylene content information. Moreover, the instrument measures intrinsic viscosity by means of a built-in dual capillary viscometer. All results (concentration, ethylene content and intrinsic viscosity) are obtained for the whole sample, the amorphous fraction, and the crystalline fraction.
Up to 4g of polymer can be analyzed, one sample at a time with CRYSTEX QC. For an equally automated analysis of multiple samples (up to 42), known to be homogenous (pelletized), can be performed using the same technology in the CRYSTEX® 42.
Features - Fully-automated analysis of the soluble (amorphous) fraction in polypropylene and other polyolefins.
- A sample can be analyzed every 2.5 hours (including dissolution and rinsing time) without manual operation.
- No need for accurate weighing of sample nor manual solvent handling.
- No external filtration nor solvent evaporation required.
- Additional measurement of ethylene content and intrinsic viscosity for the fraction, the crystalline fraction, and whole sample.
- For Process /QC laboratories in production plants.
- Compatible with other polyolefin materials such as LDPE, and adaptable to other solubility tests (heptane or hexane solubles).
... Read More | The TGIC Instrument is a fully automated Thermal Gradient Interaction Chromatograph Instrument for measuring Composition Distribution in Elastomers and Low Crystallinity Polyolefin Copolymers.
Features - Fully automated operation with no manual solvent handling. Integrated vial filling with solvent,
The TGIC Instrument is a fully automated Thermal Gradient Interaction Chromatograph Instrument for measuring Composition Distribution in Elastomers and Low Crystallinity Polyolefin Copolymers.
Features - Fully automated operation with no manual solvent handling. Integrated vial filling with solvent, sample dissolution and in-line filtration.
- Fast analysis time of around 2-3 hours including sample dissolution.
- Analysis of up to 42 samples sequentially, with the possibility of using different methods each one.
- Both TGIC and CEF analyses can be performed in the same instrument with dedicated software packages.
- Easy incorporation of Polymer Char’s on-line Viscometer for composition molar mass interdependence.
- Option to integrate IR5 MCT detector for maximum sensitivity in both concentration and composition signals.
... Read More | Temperature Rising Elution Fractionation has been the most comprehensive technique for the characterization of the Chemical Composition Distribution (CCD) in polyolefins, and Polymer Char’s TREF is the first fully automated apparatus implementing this technique.
TREF can be converted into a CRYSTAFTemperature Rising Elution Fractionation has been the most comprehensive technique for the characterization of the Chemical Composition Distribution (CCD) in polyolefins, and Polymer Char’s TREF is the first fully automated apparatus implementing this technique.
TREF can be converted into a CRYSTAF-TREF combined system capable of running both techniques by using the same hardware. Each technique can provide complementary information on the CCD in some complex resins.
Features - Full automation of the TREF techniques to measure the CCD
- 5 samples can be analyzed sequentially with no supervision required, with an analysis time of 6 hours per sample.
- Possibility of adding other detectors like Viscometer or Light Scattering.
- Easy convertible into a CRYSTAF-TREF apparatus.
- Possibility of subambient operation (down to -20ºC) for low crystallinity samples.
... Read More |
| Type | Crystallization Elution Fractionation | Inquire | Soluble Fraction Determination, Amporphous Content Measure, Quality Control, Production Control | Thermal Gradient Interaction Chromatography | Temperature Rising Elution Fractionation |
| Applications | Chemical Composition Distribution (CCD) in Polyolefins | Chemical Composition Distribution (CCD) in Polyolefins | Inquire | Measuring Composition Distribution in Elastomers and Low Crystallinity Polyolefin Copolymers | Chemical Composition Distribution (CCD) in Polyolefins |
| Detector(s) | Infrared Detector IR4 and IR5 MCT, Viscometer | Infrared Detector IR4 and Viscometer | Infrared Detector IR4 | Infrared Detector IR4 and IR5 MCT, Viscometer | Infrared Detector IR4 and Viscometer |
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