Fig. 4. Effect of varying formulation parameters on nanoparticle zeta potential. (A) PLGA concentration; (B) PVA concentration; (C) organic solvent fraction; and (D) speed of agitation in evaporation. Preparations by the emulsification technique with PLGA of 17 kg mol−1, P17A-E (
). Preparations by the nanoprecipitation technique with PLGA of 17 kg mol−1, P17A-N (
), and PLGA of 153 kg mol−1, P153-N (
). Data represent mean ± SD (n = 3).
