Poly(Butylene Terephthalate) (1) (Eluent: HFIP)
Poly(butylene terephthalate) was analyzed using GPC 
HFIP-805 + 
HFIP-803
(columns for organic SEC (GPC)). PBT is a polyester resin used in a wide variety of fields. This chromatogram shows that small amounts of oligomers may affect the
characteristics of PBT resin.

Sample : 
PBT, Poly(butylene terephthalate)
Columns      : Shodex GPC HFIP-805 + HFIP-803 (8.0mmID*300mm each)
Eluent       : 5mM CF3COONa in HFIP
Flow rate    : 1.0mL/min
Detector     : Shodex RI
Column temp. : 40deg-C