Home » Analytical Services » GPC/SEC Analysis GPC/SEC Analytical Services Overview Polymer Char laboratory specializes in the microstructural characterization of polyolefins. Our extensive knowledge and expertise are helping companies worldwide deepen their understanding of their polyolefin products. For Gel Permeation Chromatography (GPC) or Size Exclusion Chromatography (SEC) analysis we use GPC-IR and GPC-QC instruments. Both GPC systems are optimized for the analysis of polyolefins, and their Infrared detectors – IR5 or IR6 – are used for obtaining the Molecular Weight Distribution and the Chemical Composition Distribution (or Short Chain Branching (SCB)) of the sample. Viscometer and Multi-angle Light Scattering (MALS) detectors can be added to provide Intrinsic Viscosity, Long-chain Branching (LCB), and Absolute Molar Mass results. GPC/SEC analyses are particularly useful for bimodal HDPE, LDPE, EP copolymers, and Ultra High Molecular Weight polymers, especially when combined with SCB and LCB information because of the extra dimension that these results provide. Request a Quotation GPC/SEC Analysis Results The following are some results of samples analyzed by GPC-IR and GPC-QC: Metallocene PE Octene Copolymers of different branch content analyzed by GPC-IR Analysis Conditions: Flow rate: 1 mL/min Temperature of columns: 160ºC Concentration: 2 mg/mL Injection Volume: 200 uL Injection Time: 55 min Dissolution Temperature 160ºC Dissolution Time: 60 min Ethylene Content in EP Copolymers analyzed by GPC-IR Analysis Conditions: Flow rate: 1 mL/min Concentration: 1 mg/mL Injection volume: 200ul Injection time: 55 min Dissolution time: 90 min Temperature: 160ºC Short Chain Branching in HDPE analyzed by GPC-IR This graph shows the outstanding reproducibility of the IR5 Detector for 10 injections of the same sample. Analysis Conditions: Flow rate: 1 mL/min Concentration: 1 mg/mL (8mg in 8mL) Dissolution time: 120 min Temperature of columns: 160ºC Medium shaking GPC/SEC Analysis Reports GPC-IR 3D Report (IR5) GPC-IR Viscosity Report (IR5) GPC-IR Report Overlay (IR5) GPC-QC Report Overlay (IR5) GPC-QC Report Overlay (IR5) GPC/SEC Detectors These detectors are used in our GPC analyses: IR5 IR5 is capable of measuring the concentration and the chemical composition of polyolefins with superb sensitivity. This is especially useful for analyzing HDPE pipe resins, where a highly sensitive detector is required to accurately measure the low number of branches that they contain. IR6 IR6 is capable of measuring the carbonyl group in the band of 1740 cm-1. This detector is recommended for users that want to analyze polyolefins type EVA, EBA, and others which have carbonyl group present in the aforementioned IR band. Viscometer By connecting a capillary Viscometer to a high-temperature GPC when analyzing polyolefins, the 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. Coupling a concentration detector to an online viscometer is a way to generate Mark-Houwink plots, which relate intrinsic viscosity with molar mass, a method for long chain branching characterization. Light Scattering A Light Scattering detector connected to a GPC instrument makes it possible to determine the absolute Molar Mass without calibrating the GPC columns. Coupling a concentration detector to a light scattering detector is a way to generate Conformations Plots (dependence of radius of gyration on molar mass), a direct method for detection and characterization of long chain branching. GPC/SEC Analytical Service Fees To calculate the final price, please use the Standard fee as a base, and then add the corresponding fee for each additional result that you need. GPC/SEC (Price/Sample) First Sample Additional Samples Standard 457€ 359€ Additional Results: Chemical Composition 509€ 352€ Intrinsic Viscosity 331€ 240€ Absolute Molar Mass by Light Scattering 454€ 330€ Carbonyl Content 509€ 352€ Additional Services: Sample Filtration 178€ 178€ Standard Data Re-processing 90€ 90€ Minimum sample amount >0.1 g Terms & Conditions Read the Analytical Service Terms & Conditions Analytical Services Frequently Asked Questions Will this service provide me with the physical fractions? 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 should I send my samples? Can I send my samples by post mail? When will I receive the analysis results? How much sample should I send? Will my samples and data 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 Webinar: Characterization of copolymers with carbonyl groups and other polyolefin applications by high temperature GPC-IR SPE International Virtual Polyolefins Conference Date: February 2021 Speaker: Esther López Watch now Instruments & Analytical Services Brochure File size: 4MB Download PDF GPC-IR Applications Notebook High-Temperature Applications for GPC/SEC Download PDF Related Instruments These are the instruments used to obtain this analysis and others that might be of interest to you: GPC-IR® High-Temperature multi-detector GPC/SEC system. Automated, Reliable and Polyolefin-dedicated GPC-QC Simplified and fully automated GPC/SEC instrument aimed at quality control laboratories in polyolefin production plants CFC Cross Fractionation Chromatography An automated and benchtop cross-fractionation instrument to analyze the bivariate distribution in Polyolefins by TREF and GPC. Overview Analysis Results Reports 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. 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