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Nafion Powder for the Production of Fuel Cell Electrodes

SPEX SamplePrep, LLC
7 Jan 2015

In this application note, the Freezer/Mill was used to obtain a very fine powder of Nafion, despite it being a very soft and flexible polymer. No particle size determination was carried out because the thickness of the applied layer was specified at a particle size of less than 25μm.

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6875D Freezer/Mill®

SPEX SamplePrep, LLC

The 6875D Freezer/Mill® is a high-throughput, dual chamber cryogenic grinder with a self-contained liquid nitrogen tub and insulated case. Specifically designed for cryogenic grinding and pulverizing of tough and/or temperature sensitive samples in a grinding vial immersed in liquid nitrogen. This mill chills samples in liquid nitrogen then pulverizes them with a magnetically driven impactor. The new high resolution display is user-friendly and shows the each stage of the grinding process. It also shows the Run history, Training videos and manuals and a complete listing of accessories.  

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Shakers, Stirrers and MixersShakers, stirrers and mixers are used for mixing liquids and solids for laboratory applications. There is a wide range of laboratory mixing equipment available, including magnetic stirrers, orbital shakers, linear shakers, microplate shakers, 3D gyratory rockers, rotators & vortexers. Additional platforms and clamps can also be attached to shakers to increase capacity. Find the best shakers, stirrers and mixers in our peer-reviewed product directory: compare products, check customer reviews and receive pricing direct from manufacturers.GrindingPolymersPolymers are large molecules made up of many repeat units. Natural polymers such as DNA and proteins are essential to life, whereas synthetic polymers such as polystyrene and polyethylene are used widely due to their functionality. Typical techniques for analysis include GPC, SEC, DSC, FT-IR and NMR.NafionSample ProcessingSample processing is required to prepare samples prior to analysis. Technologies used for sample processing include homogenizers, grinders, mills and mixers.

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