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Scanning electron micrographs of valsartan–HPMC–surfactant composite nanoparticles prepared by using the SAS process.
Notes: (A) Valsartan–HPMC; (B) valsartan–HPMC–poloxamer 407; (C) valsartan–HPMC–Ryoto sugar ester L1695; and (D) valsartan–HPMC–TPGS.
Abbreviations: HPMC, hydroxypropyl methylcellulose; SAS, supercritical antisolvent; TPGS, D-α-Tocopheryl polyethylene glycol 1000 succinate.
