Home » Analytical Services » Chemical Composition Analysis by TREF Chemical Composition Analysis by TREF Overview Temperature Rising Elution Fractionation (TREF) is a well-known technique for the characterization of the Chemical Composition Distribution CCD in Polyolefins and Polymer Char’s Temperature Rising Elution Fractionation (TREF) is the first fully automated analytical Instrument that performs this analysis. The concentration of the sample is measured by an Infrared (IR) detector, Polymer Char’s IR4, which can also offer information about comonomer content if a composition sensor is added. More information can be obtained by adding a Viscometer detector. TREF Sample Results The following are some results of analyses performed by TREF: Concentration Curve of an LLDPE by TREF Analysis Conditions: Dissolution temperature: 150ºC Stabilization temperature: 95ºC Crystallization rate: 0.5ºC/min Crystallization temperature: 35ºC Dissolution time: 60 min SF time: 10 min Elution rate: 1ºC Elution temperature: from 35ºC to 120ºC Elution pump flow: 0.5 mL/min Solvent used: oDCB stabilized with BHT Environmental test conditions: 25ºC ± 2ºC Concentration Curve of a LLDPE by TREF Analysis Conditions: Dissolution temperature: 150ºC Stabilization temperature: 95ºC Crystallization rate: 0.5ºC/min Crystallization temperature: 35ºC Dissolution time: 60 min SF time: 10 min Elution rate: 1ºC Elution temperature: from 35ºC to 120ºC Elution pump flow: 0.5 mL/min Solvent used: oDCB stabilized with BHT Environmental test conditions: 25ºC ± 2ºC Concentration Curve of an aPP + sPP +iPP Analysis Conditions: Dissolution temperature: 150ºC Stabilization temperature: 95ºC Crystallization rate: 0.5ºC/min Crystallization temperature: 35ºC Dissolution time: 90 min SF time: 10 min Elution rate: 1ºC Elution temperature: from 35ºC to 140ºC Elution pump flow: 0.5 mL/min Solvent used: oDCB stabilized with BHT Environmental test conditions: 25ºC ± 2ºC Additional Detectors These detectors are used in our TREF analyses: C=O Content by IR4 A Carbonyls sensitive sensor can be incorporated in the infrared detector to measure the C=O/1000C tendency versus the molar mass distribution. (Depending on instrument availability) Go to IR4 Viscometer By connecting a capillary Viscometer to a TREF instrument when analyzing polyolefins, the bulk Intrinsic Viscosity (IV) can be determined. The IV is provided as a function of Molar Mass (MM), and then the Universal Calibration (UC) is applied, for samples with different molecular structures. TREF Analytical Services Fees To calculate the final price, please use the Standard fee as a base, and then add the corresponding fee for each additional detector or service that you need. Anything below 30ºC is considered "subambient". TREF (Price/Sample) First Sample Additional Samples Standard 439€ 364€ Additional Results: Chemical Composition 176€ 147€ Intrinsic Viscosity 176€ 147€ Molar Mass by Light Scattering 386€ 324€ Calibration for Chemical Composition 186€ 0€ Calibration for Intrinsic Viscosity 109€ 0€ Calibration for Molar Mass 109€ 0€ Calibration in Comonomer Content 186€ 0€ Additional Services: Crystallyzation 0.1ºC room temperature 132€ 110€ Crystallyzation <0.1ºC room temperature 171€ 143€ Crystallication 0.1ºC subambient 351€ 295€ Crystallization <0.1ºC subambient 457€ 383€ Subambient 123€ 123€ Sample Filtration 178€ 178€ Standard Data Re-processing 90€ 90€ Minimum sample amount >1 g Terms & Conditions Read the Analytical Service Terms & Conditions Analytical Services Frequently Asked Questions I want to fractionate my samples, what technique is the most appropriate? What kind of report will I receive? I have some questions before ordering a service. Who should I contact? How can I order an Analytical Service? Where do I have to send my samples? Can I send my samples by post mail? When will I receive the analysis results? What amount of sample should I send? Will my samples be treated as confidential? Request a Service Thank you for your interest. If you would like to receive more information or want to request a quotation please complete this form. * Required fields I have read and accept the terms and conditions and privacy policy Related Literature & Documents Instruments & Analytical Services Brochure File size: 4MB Download PDF CEF Datasheet File size: 254 KB Download PDF CRYSTAF-TREF Datasheet File size: 241 KB Download PDF Related Instruments These are the instruments used to obtain this analysis and others that might be of interest to you: CRYSTAF-TREF The analytical power of CRYSTAF and TREF together in a single instrument for a full Chemical Composition Distribution characterization. CRYSTAF Crystallization Analysis Fractionation. Innovative and fast approach to the Chemical Composition Distribution analysis in Polyolefins needing a single temperature. CEF Crystallization Elution Fractionation CEF is a fully-automated instrument for Chemical Composition Distribution analysis of polyolefins Overview Sample Results Additional Detectors Fees FAQs Contact Related Literature & Documents Related Instruments Polymer Characterization, S.A. Valencia Technology Park Gustave Eiffel 8, Paterna E-46980 Valencia, Spain Tel.: +34 96 131 81 20 info@polymerchar.com Follow us on LinkedIn Sign up for our newsletter Go! Terms & Conditions Privacy Policy Cookies Policy Cookies configuration This site uses cookies to give you a better browsing experience. If you continue browsing this site we understand that you accept our use of cookies. For more information, please visit our Cookies Policy. You can configure which cookies you accept by ticking the next options: Receive cookies: Technical (necessary) Analytical Accept