SANG Ming-min, YAN Dong-mei. DETERMINATION OF MOLECULAR WEIGHT AND MOLECULAR WEIGHT DISTRIBUTION OF POLYBUTYLENE TEREPH- THALATE BY GPC AT ROOM TEMPERATURE[J]. Acta Polymerica Sinica, 1993,(3):311-315.
SANG Ming-min, YAN Dong-mei. DETERMINATION OF MOLECULAR WEIGHT AND MOLECULAR WEIGHT DISTRIBUTION OF POLYBUTYLENE TEREPH- THALATE BY GPC AT ROOM TEMPERATURE[J]. Acta Polymerica Sinica, 1993,(3):311-315.DOI:
Molecular weight and molecular weight distribution of PBT were determined by GPC at room temperature. A room temperature solvent of o-chlorophenol / chloroform mixture (1 : 3 by volume ) was found by means of theoretical calculation of the solubility parameters. GPC experiments showed that this mixed solvent can be used as an eluant of GPC at room temperature.PBT fractions were obtained by fractionation and were characterized and used as standards to calibrate the GPC column. [η]-M equations of PBT and PS in this mixed solvent at 25℃ were obtained. Universal calibration was found to be applicable for PBT in this system.