Euro ea3000 analyser

The moisture content was determined in previously conditioned films in triplicate. To this end, four samples per formulation were dried in a vacuum oven (J.P. Selecta, S.A. Barcelona, Spain) at 60 °C for 24 h and, subsequently, the samples were placed into a desiccator with P₂O₅ at 25 °C for 2 weeks, until they reached a constant weight [10 (link)]. The film thickness was measured at 5 different points using a Palmer digital micrometre (Comecta, Barcelona, Spain).
In order to determine the C composition of the samples, an elemental analysis was performed by means of a Euro EA3000 analyser (EUROVECTOR, Milan, Italy). The analyses were carried out in triplicate.
The morphological changes that the samples underwent throughout the disintegration experiments were recorded by means of photographs taken at different times of the process. For this purpose, specific samples extracted from the reactors were dried in a vacuum oven at 40 °C for a week and the pictures were taken using a digital camera (EOS 5D Mark II, Canon, Tokyo, Japan).

All of the reagents and solvents were obtained from commercial sources and used without purification. The CHN analysis was performed at the analytical laboratory of the Nikolaev Institute of Inorganic Chemistry SB RAS using a EuroVector EURO EA 3000 analyser (Pavia, Italy). The IR absorption spectra were registered using a Scimitar FTS 2000 spectrometer in the range from 4000 to 400 cm⁻¹. The studied samples were prepared in the form of suspensions in nujol and in fluorinated oils.