Interaction between Aqueous Solutions of Hydrophobically Associating Polyacrylamide and Dodecyl Dimethyl Betaine

Figure 2

Molecular structure of hydrophobically associating polyacrylamide (HAPAM) (theoretical mole percents of 𝑥, 𝑦, and 𝑧 were about 79.7%, 20.2%, and 0.1%, resp.).