For the samples with higher content of silica, SBR-50M-75S and SBR-
50M-50M, a fine powder was formed, while when the silica was reduced,
a tendency to form small agglomerated was visually observed. The dried
silica was also evaluated for comparison purposes. Dried silica resulted in
particles characterized by spherical morphology, micrometric sizes and
smooth surfaces.was also evaluated for comparison purposes. Dried silica resulted in
particles characteried by spherical morphology, micrometric sizes and
smooth surfaces.