The image shows a typical two-phase structure for ABS polymer, a grafted polybutadiene rubber phase dispersed in a SAN matrix as the continuous phase, as presented on page 2458 by Binbin Liu and Hua Lei. It is a characteristic sea-island structure where the rubber resembles islands embedded in the SAN matrix sea. Similar sea-island structures in the SAN-grafted rubber phase can be seen, where the rubber phase is the continuous phase and the SAN section grafted on the rubber is dispersed in this continuous phase, resulting in the multi-level structure of the island in the sea, and the sea within the island.

A TEM photograph of SiO₂-CB/ES-SSBR, where the light part is carbon black (CB) and the dark part is silica (SiO₂), is presented by Yu Bai and colleagues on page 2516. SiO₂-CB/ES-SSBR composites show that aggregates of three to five SiO₂ particles of about 20 nm in diameter are inlaid into the CB networks, exhibiting outstanding doping dispersion and homogeneous distribution. Silica aggregates in the comparable S-SSBR matrix are much bigger, and the dispersion of the two kinds of filler is worse than that in ES-SSBR. Additionally, the Si element is only detected in the CB aggregates by EDS spectra for the ES-SSBR matrix. Therefore, ES-SSBR is a remarkable type of energy-saving elastomer that can be used in tire tread.