Figure 6. Formulation and Rheology of the Antimicrobial and Temperature-Responsive Hydrogel Delivery System . A)Formulation of the hydrogels. AgNPs-PVP was introduced to an 18%(w/v) aqueous solution of P407 to the final concentrations of 50 µM, 100 µM, and 200 µM respectively. The formulations were thereinafter referred to as XµM[AgNPs-PVP]-18%[P407], where X indicates the concentration of Ag. B-E) Linear oscillatory shear rheology of the formulations containing 18%[P407] (B ), 50µM[AgNPs-PVP]-18%[P407] (C ), 100µM[AgNPs-PVP]-18%[P407] (D ), and 200µM[AgNPs-PVP]-18%[P407] (E ), with dashed lines highlighting the storage modulus G\({}^{\prime}\) and loss modulus G” at 37ºC .F) Summary of gelation temperatures and values of G\({}^{\prime}\) and G” at 37ºC, for the four aforementioned formulations. Data are mean ± SD. n = 3 for each group.