Composition Control of Thin Films Based on Polyhydroxybutyrate - Polyamide Mixture
The effect of the procedure of polyhydroxybutyrate and polyamide (PP) mixing (in the solvent or in the melt using heated rolls with a friction clutch) on their dispersion is considered. A method of nondestructive control of the composition of thin films of PP mixture using Infrared Fourier Transform Spectroscopy is developed. A possibility of using small samples and high sensitivity are considered the advantages of the developed procedure. Mixing of the polymers in the melt leads to uneven dispersion of polyhydroxybutyrate and polyamide, whereas mixing in a solution results in more homogeneous dispersion. The proposed approach can be extended to other polymer compositions.