Fig. 7. Self-assembly of 1 wt% comb-shaped copolymer and the association with clay particles (a) before aging (2000×) and (b) after aging at 200 °C (2000×). SEM image of 10 wt% salt in comb-shaped copolymer solution with clay particles (d) before aging (1000×) and (e) after aging at 180 °C (2000×). Conceptual illustration of comb-shaped copolymer (c) and association with clay particles (f).