PET Oligomer

PET oligomer was analyzed using GPC K-803 + K-802 (columns for organic SEC (GPC)). Poly(ethylene terephthalate) (PET) cannot be dissolved in ordinary solvents because there are many hydrogen bonds between the molecules. It can, however, be dissolved in a chloroform and a dichloroacetic acid mixture. Therefore, a chloroform / dichloroacetic acid (95/5) eluent is used for performing this analysis. A 5mM CF₃COONa/HFIP eluent used for the analysis of PET polymer can also be used for the analysis of PET oligomer.


Sample : PET, Poly(ethylene terephthalate)

Columns      : Shodex GPC K-803 + K-802 (8.0mmID*300mm each)
Eluent       : CHCl3/Cl2CHCOOH=95/5
Flow rate    : 1.0mL/min
Detector     : UV(290nm), Shodex RI
Column temp. : Room temp.