Optical microscopy of a razor cross-section at 40x magnification and compare with the Philips dispersion standards (rating from 1 - very poor to 10 - very good).

An alternative approach would be to measure the surface roughness, which can be done using either optical microscopy (optical profilometry, e.g. Bruker Contour K0 system) or scanning electron microscopy - we use a Hitachi TM3030 for this purpose, and it does the job very well.

A method for measuring the dispersion of carbon black or other particulate fillers in rubber using thin sections and light microscopy, suitable for controlling mixing processes in both manufacturing and compounding laboratories.

Rheometer and mathematic analysis method effectively evaluate dispersion of filler in rubber matrix and achieve optimal filler loading level, supporting other methods like RPA, SEM, TEM.

Novel methods for determining filler weight fraction and dispersion degree in polymer composites have been developed, using XRD and FTIR techniques.

New method using reflectometry effectively measures carbon black dispersion in rubber, revealing that better dispersed carbon black samples reflect less light than poor dispersed samples.

Best Regards,