PET Oligomer (K-803 + K-802)

PET oligomer was analyzed using GPC K-803 and K-802, organic SEC (GPC) columns. 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 5 mM CF 3 COONa/HFIP eluent used for the analysis of PET polymer can also be used for the analysis of PET oligomer.
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Sample : PET, Poly(ethylene terephthalate) 

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

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