Figure 7.

Degradation degree of cationic polymers under different test conditions: a) in 2 m KOH D₂O solution at 80 °C for 24 and 96 h, respectively, b) in 2 m KOH mixed solution $(V_{{\mathrm{D}}_{\mathrm{2}}\mathrm{O}}\mathrm{/}{V}_{{\mathrm{CD}}_3\mathrm{OD}}=1\mathrm{:}1)$ at 80 °C for 24 and 96 h, respectively, c) in 2 m KOH CD₃OD solution at 80 °C for 24 and 96 h, respectively.