A study of the synthesis of poly(ethylene terephthalate) in the presence of oligoetherepoxide by 1H and 13C NMR methods
β Scribed by A.Kh. Bulai; T.M. Buchneva; G.A. Gabrielyan; Ya.G. Urman; L.A. Ananyeva
- Book ID
- 116047246
- Publisher
- Elsevier Science
- Year
- 1984
- Weight
- 517 KB
- Volume
- 26
- Category
- Article
- ISSN
- 0032-3950
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The oxidative thermal degradation of poly(ethylene oxide) (PEO) and poly(propylene oxide) (PPO) at 150Β°C in air was studied. The weight loss was determined, and the structure of the residual polymer investigated using NMR. In PEO, the only significant structural changes were the formation of formate
## Abstract Trichloroacetyl isocyanate reacts rapidly and quantitatively with both acid and hydroxyl chain ends to form derivatives that can be readily determined by ^1^HβNMR spectroscopy. This method provides a convenient mean for characterization of polyethylene terephthalate (PET) endβgroups. Th