Figure 2
From: A comprehensive review of viscoelastic polymer flooding in sandstone and carbonate rocks

Chemical structures of (a) Acrylamido Tertiobutyl Sulfonate (ATBS) and (b) N-vinylpyrrolidone (NVP).
From: A comprehensive review of viscoelastic polymer flooding in sandstone and carbonate rocks
Chemical structures of (a) Acrylamido Tertiobutyl Sulfonate (ATBS) and (b) N-vinylpyrrolidone (NVP).