Our laboratory is a global reference in the Polyolefin Characterization field because it gathers the most
complete range of instruments and techniques available
for microstructural characterization.
Polymer Char offers a wide range of Analytical Services for Polyolefin samples in its Laboratories in Valencia. Polymer Char’s Laboratories are a global reference in the Polyolefin Characterization field since the most complete range of instruments and techniques for microstructural characterization are available; Molar Mass by high-temperature GPC-IR, Chemical Composition Distribution by CRYSTAF, TREF or CEF, Bivariate Distribution by Cross-Fractionation analysis (CFC), automated Xylene Solubles measurement by CRYSTEX, Preparative Fractionation by Molecular Weight and Composition, etc.
An infrared detector, Polymer Char’s IR4, the most appropriate detector for polyolefins, is used as a concentration detector in all the analytical techniques. Other detectors are also available in some of the techniques; like methyls or carbonyls content, highly sensitive methyls content measurement by IR5 for HDPE resins. A Viscometer or Light Scattering can also be adapted to some of the instruments. More recently, Polymer Char developed the IR6 Detector, with same capabilities and features than IR5 detector and the additional capability of measuring carbonyls group in the band of 1740 cm-1. IR6 Detector is recommended for users willing to analyze polyolefin type EVA, EBA, and others with carbonyls group present in IR band above
Size-Exclusion Chromatography (SEC) also known as Gel Permeation Chromatography (GPC) is a liquid chromatography technique, which separates molecules according to their size. Polymer Char performs GPC/SEC analyses for polyolefins, by using its own high-temperature Instrument, the GPC-IR, and the GPC-QC equipment.
Most polyolefin products are produced with the incorporation of comonomers to reduce crystallinity and to extend the range of product performance. To define these copolymers, chemical composition or comonomer incorporation parameter is required in addition to the molar mass distribution.
The direct measurement of the two-dimensional distribution by cross-fractionation in terms of both molar mass and chemical composition is the most comprehensive way of obtaining a full definition of the microstructure in Polyolefins, which could be further extended by the use of multiple detectors after the cross-fractionation process. This goal can be achieved by coupling GPC and TREF or TGIC techniques.
Fractionation of polymers by composition or molar mass allows the most comprehensive approach to the bivariate distribution studies since physical fractions from the parent sample are obtained. These fractions can be afterwards analyzed by whichever technique like TREF, CRYSTAF, GPC, NMR or DSC.
The Soluble Fraction test is intended to measure the amorphous fraction of Polypropylene and Ethylene-Propylene copolymers. To obtain the amorphous content percentage, Polymer Char uses either CRYSTEX QC or CRYSTEX 42 depending on the requirements of the analysis. With all three instruments, precision and accuracy in the results are achieved through a fully-automated process.
This service obtains the intrinsic viscosity in polymeric materials, even of the most challenging ones such as high and ultrahigh molar mass polymers. The analysis is performed in the instrument IVA with TCB as solvent and 160°C as standard conditions and results show a good correlation with decaline results. Analysis with other solvents and other conditions are possible too.
Minimum Sample Amount
|CRYSTEX QC||>3 g|
|CRYSTEX 42||>1 g|
|Fractionation by TREF||>5 g resulting amount per fraction desired|
|Fractionation by CRYSTAF||>5 g resulting amount per fraction desired|
|Fractionation by Molar Mass||>5 g resulting amount per fraction desired|
A minimum sample amount will be required depending on the analytical service ordered. Please refer to the table above.
Samples should be shipped to:
Polymer Characterization S.A.
Valencia Technology Park
Gustave Eiffel 8, Paterna
Valencia, E-46980, Spain
Attn.: Analytical Services Department
Standard response time is 3 weeks (for fractionation services, this is the response time per sample to be fractionated). This time is approximate and depends on the analysis’ queue in the laboratory at the time of the order and number of samples to be analyzed. Polymer Char will inform the Client at the time of the order in case that response time is expected to be longer. Priority services (results sent within 10 days from the samples receipt) might be ordered with a 50% surcharge. Please consult us the availability of this service and delivery time at the time of the order.
Results sent are based on our best corporate analytical procedures within the scope of generally accepted methods in the field of expertise and they are all performed with proper care and responsible approach.Polymer Char will be willing to duplicate or to do the necessary work to corroborate the results. However, it accepts no liability for the information supplied.
Regarding lawsuits, Polymer Char has the responsibility to avoid any conflict of interest that may result in its participation, therefore:
Polymer Char is glad to run demonstration samples if you are interested in acquiring an instrument and would like to test the results. The maximum number of samples run free of charge for CFC and Fractionation services is one. For all other instruments, the maximum are two samples.
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Thank you for your interest. If you would like more information about any of our analytical services, please fill out the form below.