Gradient polymer elution chromatography GPEC separation

Determination of Chemical Heterogeneity by Interaction Chromatography An alternative approach to measure the CCD of any kind of copolymer is the use of interaction chromatography. In such experiments, the separation is based on enthalpic interaction of the sample with the stationary phase therefore, the name polymer HPLC (sometimes also referred to as gradient polymer elution chromatography (GPEC)) is also common. 

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