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pH-responsive equilibrium volume swelling ratio of ternary hybrid HNTm/PHAD-Hgs (A) and HNTm/PHAD-Cgs (B) as a function of HNT concentration and the swelling pH. (C) Photographs of swollen HNT1/PHAD-Hgs and -Cgs containing 0.30% (w/v) HNTs and HNT9/PHAD-Hgs and -Cgs containing 2.50% (w/v) HNTs in pH buffer solution of 2.1, 6.6 and 10.7 and pH-response of DEAEMA groups in acidic and basic conditions.
