good
dispersion degree of clay particles without aggregates in the micron
range can be observed in the micrographs of the samples containing
3 wt.% of C30B and D43B. Contrarily, the sample with 5 wt.% of D43B
exhibits some clay aggregates dispersed in the polymeric matrix. The
incorporation of 3 and 5 wt.% of C15A results in worse level of clay
minerals dispersion since more clay aggregates were observed.