## Abstract The mechanism of thermal degradation of the polymer obtained by polycondensation of ethyleneurea with formaldehyde was studied in detail using several techniques. On heating the polymer undergoes crystallisation at about 175°C. Upon melting (at 355°C) further condensation of ethyleneure
Preparation and thermal behaviour of some polycondensates
✍ Scribed by B.C. Stojčeva Radovanović
- Publisher
- Elsevier Science
- Year
- 1991
- Tongue
- English
- Weight
- 195 KB
- Volume
- 27
- Category
- Article
- ISSN
- 0014-3057
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✦ Synopsis
New materials with higher thermal stability have been prepared by polycondensation of urea, form aldehyde and methacrylonitrile or furfuryl alcohol in the presence of titanium (IV) oxide as coupling agent. Their structures were confirmed by Fourier transform infrared spectroscopy. Thermal behaviour of these polycondensates has been studied by thermogravimetry and differential thermal analysis and FTIR and electron spin resonance spectroscopy.
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