Home » Products » Preparative Fractionation Instruments » PREP mc2 PREP mc2 Preparative instrument to fractionate polymers by Molar Mass or Composition (TREF or CRYSTAF). Request a Quotation PREP mc2 Overview Preparative (PREP) fractionation of a resin obtaining the physical fractions is a powerful approach in Polyolefin characterization research. Resulting fractions can be analyzed afterward by other techniques such as GPC, TREF, CRYSTAF, NMR, FTIR or DSC. Therefore, results can be used to study the interdependence among different microstructure parameters. The most common and useful approach is the bivariate distribution study, as it combines chemical composition distribution results with molar mass results. PREP mc2 is an instrument intended for the semipreparative fractionation of polymers by molar mass or by composition Temperature Rising Elution Fractionation and Crystallization Analysis approaches. Samples are put into the vessels and the fractionation is performed automatically according to the selected method conditions in less than 24 hours. Molar Mass fractionation is based on the solvent interaction with the polymer chains through a solvent/non-solvent separation approach. Polydispersity of resulting fractions can be very narrow. Composition fractionation is based on differences in the crystallizability of the copolymer resins and can be performed by dissolution (TREF) or by precipitation (CRYSTAF) approaches. A single solvent is used to separate fractions according to their composition by dissolution or crystallization at different temperatures. Up to 16 fractions can be obtained from a single sample fractionation as per the sample collector capacity. Two different samples can be fractionated at the same time, in which case up to 8 fractions per sample can be collected per run. This instrument facilitates cross-fractionation studies, which have been shown to be a powerful tool to fully characterize resins. PREP mc2 Features Flexible hardware and software to carry out different fractionation methods Fractionation by molar mass or by composition in TREF or CRYSTAF mode Fully-automated fractionation process Possibility of subambient operation (down to -20ºC) for low crystallinity samples. Fully monitorization of the process Remote Control connection available Modular Design PREP mc2 Sample Results Click here to view sample results of PREP mc2 by Molecular Weight PREP mc2 Software The PREP mc2 Software automates the fractionation process by composition TREF, CRYSTAF or by Molar Mass solvent-non solvent approaches. The corresponding separation method is selected from the PREP mc2 Software before starting the process, as well as a set of parameters involved in the fractionation, which can be configured by the user to get the desired separation conditions: such as the number of fractions obtained, volume, temperature steps (when fractionating by composition), solvent-non solvent percentages (when fractionating by molar mass) or cleaning cycles. The PREP mc2 Software has been designed as a powerful Virtual Instrumentation interface to the instrument hardware, collecting all the sensors signals during the whole fractionation process as well as monitoring them in real time, watching at the expected behaviors and warning the user about any abnormal issues during the fractionation. A manual mode is also available in the PREP mc2 Software, like in all Polymer Char’s instruments, without handling manually hot solvents and very useful as a fast diagnosis tool. As a result, every part of the instrument can be operated remotely. This manual mode is especially useful in the PREP mc2 instrument when fractionating unknown or difficult samples, allowing to perform step by step fractionations, which provides the user all the flexibility to adapt the fractionation conditions to the sample requirements. To request a demo, please contact us PREP mc2 FAQs What is the purpose of the PREP mc2 instrument? Does PREP mc2 provide the physical fractions? Does PREP mc2 provide any analytical result or curves? How many samples can be fractionated at a time? How many grams can be fractionated at once? How many fractions can be obtained from a parent sample? How narrow can the resulting fractions become? What kind of sample preparation is required by the user? How are the fractions recovered after the automated fractionation process? Do I need to handle solvents? Which solvents can be used? Which kind of polymers can be fractionated? Request More Information about PREP mc2 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 PREP mc2 Datasheet File size: 266 KB Download PDF PREP C20 Datasheet File size: 295 KB Download PDF Related Instruments PREP C20 Column-based preparative fractionation instrument, capable of fractionating up to 20 grams of polymer. Not ready to purchase an instrument yet? Try our Analytical Services. Click here for more information. Overview Features Sample Results Software FAQs Contact Related Literature Related Instruments Analytical Services Polymer Characterization, S.A. 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