International Scientific Journal


MECDP copolyesters based on poly(ethylene terephthalate) were prepared with sodium-5-sulfo-bis-(hydroxyethyl)-isophthalate and poly(ethylene glycol) units as modifiers. Thermal properties of these copolyesters were characterized by differential scanning calorimetry and thermal gravity analyzer. Experimental results indicated that glass transition temperature, melting temperature and thermal degradation temperature reduced with increasing the poly(ethylene glycol) content. The incorporation of poly(ethylene glycol) increased the flexibility and irregularity of molecular chains which led to lower crystallinity, and bought more ether bonds into molecular chains. Besides, the thermal degradation under oxygen condition happened easily compared to that under nitrogen condition.
PAPER REVISED: 2012-08-22
PAPER ACCEPTED: 1970-01-01
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2012, VOLUME 16, ISSUE Issue 5, PAGES [1456 - 1459]
  1. Lee, M. S., et al., Ozone-Gas Treatment of Cationic Dyeable Polyester and PET Fibers, Journal of Applied Polymer Science, 104 (2007), 4, pp. 2423-2429
  2. Hsiao, K. J., et al., Physics and Kinetics of Alkaline Hydrolysis of Cationic Dyeable Poly(Ethylene Terephthalate) (CDPET) and Polyethylene Glycol (PEG)-Modified CDPET Polymers, Journal of Applied Polymer Science, 98 (2005), 2, pp. 550-556
  3. Varma, D. S., et al., Poly(Ester-Ether) Fibres. Die Angewandte Makromolekulare Chemie, 52 (1980), 1, pp. 23-36
  4. Kiyotsukuri, T., et al., Poly(Ethylene-Terephthalate) Copolymers with a Smaller Amount of Poly(Ethylene Glycol)s and Poly(Butylene Glycol)s. Polymer, 36 (1995), 13, pp. 2629-2635
  5. Wei, G. F., Hua, D. B., Gu, L. X., Thermal Stability of Poly(Ethylene-Co-Trimethylene Terephthalate)s, Journal of Applied Polymer Science, 101 (2006), 5, pp. 3334-3335
  6. Li, X. G., Huang, M. R., Bai, H., Kinetics of Thermal Degradation of Liquid-Crystalline Aromatic Polymers, Die Angewandte Makromolekulare Chemie, 256 (1998), 1, pp. 9-19
  7. Li, F. X., et al., Thermal Degradation and their Kinetics of Biodegradable Poly(Butylene Succinate-Co- Butylene Terephthate)s under Nitrogen and Air Atmospheres, Polymer Degradation and Stability, 91 (2006), 8, pp. 1688-1693

© 2024 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, National Institute of the Republic of Serbia, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence