The use of the solvent mixture chloroform/hexafluoroisopropanol (98 : 2 vol %) in the GPC‐analysis of polyethylene terephthalate (PET) is described. PET‐samples of different molecular weight have been prepared and characterized by light scattering, viscometry, and improved techniques of osmometry and end group titration. These well characterized samples were used in calibrating the GPC. The calibration with polydisperse standards was found superior to the universal calibration procedure in the solvent system chosen.
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Klaus Weißkopf (1988) studied this question.
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