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Images of transmission electron microscopy (TEM) at high (left) and low (right) magnification of (a) NCS20 and (b) NCP50 samples. The contrast between the core and the shell of the particle confirms the formation of the nanocapsules. NCS20 is composed of 90% of surfactant and 10% of type II resins, and the NCP50 is distributed by 94% of Petro 50 surfactant and 6% of type II resins.
