Microgravimetric determination of polycondensation kinetics
The polycondensation of bis(ethylene glycol) terephthalate to poly(ethylene terephthalate) was investigated by thermogravimetric measurements at 260-300 Deg. A model is developed which enables to ext. the apparent kinetic parameters from the measured mass loss curves. Changing the height of the polymer layer from 0.03-2.10 mm shows an influence of mass transfer on the reaction rate. The efficiency of a Sb(III) catalyst was examd. [on SciFinder (R)]
1998
Weinheim
587
595
DECHEMA Monographien; 134
CAN 129:245556 35-3 Chemistry of Synthetic High Polymers Swiss Federal Institute Technology,Lausanne,Switz. Journal 0070-315X written in English. 24937-73-3P (Bis(2-hydroxyethyl) terephthalate homopolymer) Role: PRP (Properties), SPN (Synthetic preparation), PREP (Preparation) (Microgravimetric detn. of polycondensation kinetics); 959-26-2 (Bis(2-hydroxyethyl) terephthalate) Role: PEP (Physical, engineering or chemical process), PRP (Properties), RCT (Reactant), PROC (Process), RACT (Reactant or reagent) (microgravimetric detn. of polycondensation kinetics of bis(ethylene glycol) terephthalate); 25038-59-9P Role: PRP (Properties), SPN (Synthetic preparation), PREP (Preparation) (microgravimetric detn. of polycondensation kinetics of bis(ethylene glycol) terephthalate)
EPFL