FTIR-spectroscopy

This study explores the effectiveness of β-cyclodextrin (β-CD) as a carrier for essential oils (EOs), specifically d-limonene, and eugenol, within biodegradable delivery systems. Inclusion complexes were prepared via coprecipitation and analyzed using Fourier-transform infrared spectroscopy. FTIR analysis confirmed the encapsulation, indicated by the shift in the O-H stretching vibrations of β-CD and a reduction in the intensity of the C-H stretching vibrations of d-limonene, which suggests successful molecular inclusion.

An oligomer with terminal unsaturated double bonds (unsaturated oligomer, UO) has been synthesized from epoxy resin Epidian 5 and ethylacrylic acid. The impact of the catalyst nature, temperature, and reaction duration on the progress of the reaction between the resin and the acid has been studied. A synthetic technique is proposed for producing the UO. The UO has been characterized by chemical and FTIR-spectroscopic analyses. The UO has been examined in the cross-linking processes with oligoesteracrylates TGM 3 and MGP 9 as well as unsaturated polyester PE 246.