Figure 11

Phase-contrast optical microscopy images (×20). Of a dispersion containing the direct mixing of the rods formed from PDADMAC at Z = 0.3 and Z = 7. The attachment of the short and negatively charged rods (obtained at Z = 7 and green arrows) onto the long and positively charged rods (obtained at Z = 0.3 and blue arrows) confirmed an evident electrostatic attraction.