Size Exclusion Chromatography of Polymers
نویسنده
چکیده
In the characterization of polymers, size-exclusion chromatography (SEC) has become a standard technique for determining molar mass averages andmolar mass distributions (MMD) of polymers. The principle of SEC is easily understood: owing to limited accessability of the pore volume within the particles of the column packing, polymer molecules are separated according to their hydrodynamic volumes, which can be correlated to their molar mass. Unfortunately, this is not as easy and simple as it looks. There are numerous sources of error and pitfalls in the separation, in the detection and in the treatment of the raw chromatographic data.
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