The unique features of nanocomposite materials depend on the type and size of nanoparticles, as well as their placement
in the composite matrices. Therefore the nanocomposites manufacturing process requires inline control over certain
parameters of nanoparticles such as dispersion and concentration. Keeping track of nanoparticles parameters inside a
matrix is currently a difficult task due to lack of a fast, reliable and cost effective way of measurement that can be used for
large volume samples. For this purpose the Optical Coherence Tomography (OCT) has been used. OCT is an optical
measurement method, which is a non-destructive and non-invasive technique. It is capable of creating tomographic images
of inner structure by gathering depth related backscattered signal from scattering particles. In addition, it can analyse, in a
single shot, area of the centimetre range with resolution up to single micrometres. Still to increase OCT measurement
capabilities we are using additional system extensions such as Spectroscopic OCT (SOCT). With such addition, we are
able to measure depth related parameters such as scattering spectra and intensity of backscattered signal. Those parameters
allow us to quantitatively estimate nanoparticles concentration. Gaining those, information allows to calculate volume
concentration of nanoparticles. In addition, we analyse metallic oxides nanoparticles. To fully characterize nanoparticles
it is necessary to find and differentiate those that are single particles from agglomerated ones. In this contribution we
present our research results on using the LCI based measurement techniques for evaluation of materials with nanoparticles.
The laboratory system and signal processing algorithms are going to be shown in order to express the usefulness of this
method for inline constant monitoring of the nanocomposite material fabrication.