Fig. 1From: Dual Stimuli-Triggered Nanogels in Response to Temperature and pH Changes for Controlled Drug Releasea TEM and b SEM image of PNIPAM-co-AAc5 nanogels. c Physical appearance of PNIPAM-co-AAc5 nanogels. Scale bars are 500 nm. d Zeta potentials and e average diameters measured at 30 °C and 50 °C by DLS for PNIPAM with 0%, 5%, 10%, and 20% AAc contents at pH 7.4Back to article page