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nature : short GPC. Decomposition is based on molecular size solute separation of liquid chromatography. Determination of polymer molecular weight distribution of the most commonly used methods. Its principle and gel filtration. GPC used the porous filler crosslinked polystyrene, porous silica glass and porous, with special methods closely packed in the column were. The sample solution from the top of implantation, the outflow from the bottom of the sample concentration differential refraction can be automatically recorded dollars. The degree of polymerization of the polymer molecular packing Kong and the proliferation of internal and external flows, the large molecular weight of this molecule is difficult because of the proliferation of large size gel into the hole, the outflow to the earlier column; Conversely, the smaller molecular weight molecules gel is easy access to the hole, so to late outflow column, thereby by - son volume size for the purpose of separation.
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