biodegradable polymers — polymeric materials which spontaneously break down in the result of natural microbiologic and chemical processes.
grain (particle) size distribution — size distribution of isolated particles, crystallites, grains of ceramics or other morphological objects, regardless of their chemical composition.
configuration of a macromolecule — spatial arrangement of atoms in a macromolecule. Determined by the values of bond angles and lengths of the corresponding bonds.
molecular electron spectroscopy — A method to determine geometrical structure of molecules by their microwave spectra associated with transitions between rotational energy levels.