3.5. Scanning electron microscopy (SEM) study
Scanning electron microscopy (SEM) was used to
determine the silica dispersion in the NR matrix. Fig. 10
provides the SEM micrographs of the tensile fractured
surfaces of the silica-filled NR vulcanisates with and
without the addition of ALK: (A) A/0.0; (B) C/3.0; (C) D/5.0;
and (D) E/7.0 at 300 magnification.