| Description | CRYSTAF instrument performs Crystallization Analysis Fractionation technique to separate the polymer by its comonomer content. The process is done in a single temperature ramp, while the polymer solution concentration is monitored by using the infrared detector IR4 of Polymer Char.
CRYSTAF can be CRYSTAF instrument performs Crystallization Analysis Fractionation technique to separate the polymer by its comonomer content. The process is done in a single temperature ramp, while the polymer solution concentration is monitored by using the infrared detector IR4 of Polymer Char.
CRYSTAF 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 CRYSTAF technique to measure the CCD
- Analysis of 5 samples in 8 hours.
- Convertible into a CRYSTAF-TREF apparatus.
- Possibility of subambient operation (down to -20ºC) for low crystallinity samples.
... Read More | CRYSTEX® 42 is a high-throughput and fully-automated approach for obtaining the soluble fraction in polypropylene and copolymers. It stands as a modern and easy-to-operate alternative to the traditional wet chemistry method based on xylene solubility, which is known for being time consuming and for CRYSTEX® 42 is a high-throughput and fully-automated approach for obtaining the soluble fraction in polypropylene and copolymers. It stands as a modern and easy-to-operate alternative to the traditional wet chemistry method based on xylene solubility, which is known for being time consuming and for requiring constant manual handling of solvent at high temperature.
CRYSTEX® 42 incorporates a high temperature autosampler with 42 positions to analyze samples in 20mL vials (max. sample amount of 160mg). This system eliminates the need to handle solvent manually and it operates with less flammable solvents than Xylene (TCB or oDCB), increasing the safety level in the laboratory.
CRYSTEX® 42 is based on the same TREF separation concept as its sibling instrument, CRYSTEX® QC, in which the sample is loaded into a TREF column twice. The first injection serves to measure the whole polymer and the second one remains within the column for a crystallization ramp that results in the separation of the soluble from the crystalline fraction.
Results are very precise thanks to its full automation and to its integrated infrared detector (IR4), which measures precisely the amount of sample analysed as well as providing ethylene content information. Moreover, for a truly complete analysis, 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 soluble fraction, and the crystalline fraction.
While CRYSTEX® QC was designed to be installed in each production plant to monitor the process in real time analyzing a larger amount of sample (up to 4g), CRYSTEX® 42, with its high temperature autosampler, and has become perfect complement to be used in a central lab, where large batches of pelletized, more homogeneous samples need to be analyzed.
Features - Fully-automated analysis of the soluble fraction (amorphous fraction) in polypropylene and other polyolefins.
- Additional analysis of ethylene content and intrinsic viscosity for the soluble fraction, the crystalline fraction and whole sample.
- Fully automated process for 42 samples.
- Dissolution and full analysis of the first sample completed in 3 hours.
- Following samples results are obtained every 2 hours.
- No need for accurate weighing of sample or manual solvent handling.
- No external filtration or solvent evaporation required.
- Highly precise results.
- Compatible with other polyolefin materials such as LDPE and adaptable to other solubility tests (heptane or hexane solubles).
... Read More | PREP C20 is a fully-automated preparative pilot-plant-type equipment designed to fractionate, in a column's support, large amounts of polymer according to its chemical composition by a Temperature Rising Elution Fractionation (TREF) process, or according to its Molar Mass, by modifying the solvent PREP C20 is a fully-automated preparative pilot-plant-type equipment designed to fractionate, in a column's support, large amounts of polymer according to its chemical composition by a Temperature Rising Elution Fractionation (TREF) process, or according to its Molar Mass, by modifying the solvent power through a solvent-non solvent combination, typically in isothermal conditions.
A dry sample is put in a vessel and filled with solvent for dissolution. The sample solution is then loaded into a column where the fractionation takes place. The equipment fractionates the sample following the selected method's conditions and number of fractions, which can be eluted at the volumes desired.
The main steps in the preparative fractionation process (dissolution, column loading, crystallization, elution, and fraction collection) are performed in an automatic mode, thus, avoiding the need for handling hot and large amounts of solvent.
PREP C20 facilitates cross-fractionation studies (fractionation through TREF or Molar Mass and follow up analysis through GPC/SEC or TREF), that have been demonstrated to be a necessary tool to fully characterize resins. The fractions obtained can be further analyzed by spectroscopic techniques and can be used for micromechanical testing as well.
- Fully-automated preparative fractionation
- Up to 20 grams of polymer, depending on the sample.
- Column-based fractionation.
- Unlimited number of fractions (up to 9 fractions without exchanging bottles).
- No handling of hot solvents.
- Fractionation modes by TREF technique or by Molar mass through solvent- non-solvent approach.
- Subambient operation thanks to an integrated compressor (no need for liquid coolants).
- By exchanging the column, the fractionation can be performed by Thermal or Solvent Gradient Interaction Chtomatography.
... Read More | PREP mc2 is a preparative instrument that obtains the physical fractions of a polymer according to its molar mass or chemical composition (TREF or CRYSTAF). The sample is put into the vessels and the fractionation is performed automatically according to the selected method conditions in less than 24PREP mc2 is a preparative instrument that obtains the physical fractions of a polymer according to its molar mass or chemical composition (TREF or CRYSTAF). The sample is put into the vessels and the fractionation is performed automatically according to the selected method conditions in less than 24 hours.
The resulting fractions can be analyzed afterwards by techniques such as GPC, TREF, CRYSTAF, NMR, FTIR or DSC. Up to 16 fractions can be obtained from a single sample fractionation, and two different samples can be fractionated at the same time, in which case up to 8 fractions per sample can be collected per run.
Features - Fully-automated fractionation process.
- Possibility of subambient operation (down to -20°C) for low crystallinity samples.
- Flexible hardware and software to carry out different fractionation methods.
... 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 |