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English
Published
: 2022-09-18
Cyclohexanone-aniline-formaldehyde resins - synthesis and characterization
Abstract
Cyclohexanone-aniline-formaldehyde resins, which contain functional groups in the polymeric chain, were prepared by acid catalysis condensation. Mixture of toluene and N- methylpyrrolidone was used both as reaction medium and as carrier for aqueous condensation. The resins were characterized by determination of melting points, viscosity measurement and elemental analysis (contents of nitrogen, N%). Their structure was established by means of IR and H-1 NMR spectroscopy. The obtained polymers have low molecular weights and a moderate solubility in medium and highly polar organic solvents. Thermal studies pointed out that these polymers undergo 2-5% weight loss up to 210degreesC for resins with low content of aniline, whereas weight loss starts at 220-240degreesC for resins with low content in cyclohexanone. Activation energy for the thermal degradation is observed to be within the range 37.6-41.7 kJ/mol.
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Mustata, F., & Bicu, I. (2022). Cyclohexanone-aniline-formaldehyde resins - synthesis and characterization. Polimery, 47(11-12), 817–821. Retrieved from https://polimery.ichp.vot.pl/index.php/p/article/view/2035
