Aspects of the Chemistry of Poly (Ethylene Terephthalate). IV. Hydrolysis of Poly(Ethylene Terephthalate) in the Melt Phase
- 1 November 1985
- journal article
- research article
- Published by Taylor & Francis in Journal of Macromolecular Science: Part A - Chemistry
- Vol. 22 (11), 1545-1555
- https://doi.org/10.1080/00222338508063354
Abstract
The effect of water vapor pressure on the molecular weight of molten poly (ethylene terephthalate) has been followed by measurement of the changes which occur in the intrinsic viscosity and the end-group concentrations upon hydrolysis. It was found that phosphoric acid is highly effective as a stabilizer; the hydrolysis rate constant (Kh) decreasing from 7.6 × 10−7 mol−1s−1 for nonstabilized to 2.5 × 10−7 mol−1s−1 for the stabilized polyester at 290°C and water vapor pressure of 20 mmHg.Keywords
This publication has 5 references indexed in Scilit:
- Accurate measurement of carboxyl and hydroxyl end-group concentrations in poly(ethylene terephthalate) film by infra-red spectroscopyPolymer, 1972
- Chemical reactivity of polyethylene terephthalate. Hydrolysis and esterification reactions in the solid phaseTransactions of the Faraday Society, 1961
- Degradation Studies of Polyethylene Terephthalate.Journal of Chemical & Engineering Data, 1959
- Kinetics of the Acid-catalyzed Esterification of Phenyl- and Cyclohexyl-substituted Aliphatic Acids in MethanolJournal of the American Chemical Society, 1944
- Kinetics of the Catalyzed Esterification of Methyl and Phenyl Substituted Aliphatic Acids in Methyl AlcoholJournal of the American Chemical Society, 1939