Figure 3.

a FESEM image of the MWCNTs. b FESEM image of the cross-section of styrene acrylic emulsion-based composites with 2 wt% MWCNTs. The yellow arrows indicate the MWCNTs dispersed in the polymer matrix

Li et al. Nanoscale Research Letters 2010 5:1170-1176   doi:10.1007/s11671-010-9621-2