Toluene scanning electron micrograph

Figure 1. Scanning electron micrographs of a low polyacetylene content blend ( 20% PA) (a) as prepared, (b) after extraction with toluene for three days, and (c) after extraction for eight days.

Figure 14. Scanning electron micrograph of a large particle of the RAFT polymer using toluene as the solvent (left 1000 X right 3000 X). (Reproduced with permission from reference 20. Copyright 2007 Elsevier.)...

Figure 8 Scanning electron micrograph (SEM) images of self-assembled (a) 11a, (b) 11b, (c) 11c, and (d) lid drop-cast from toluene. (Reproduced from Ref. 17. American Chemical Society, 2008.)...

Cyclic voltammetry of polyaniline obtained in the presence of the three polyelectrolytes was very similar and presented two redox pairs. The absence of the third intermediate redox pair is evidence of linear chain formation. The scanning electron micrographs indicate a fibrillar morphology for polyanilines obtained with perchloric and p-toluene sulfonic acids and globular for those blended with the other polyelectrolytes. 

Figure 1.24 Scanning electron micrographs of samples of L-Phe-L-Phe formed at different toluene/ethanol contents (a) 100/0 (b) 90/10 (c,d) 75/25 (e) 60/40 (f) 30/70 and (g.h) 0/100. Reprinted with permission from Ref. [86). Copyright 2010 Wiley.

Figure 2 Scanning electron micrographs of yeast cells from toluene (left), hexane (middle), and decane (right). (From Ref. 73.)...

Both of these interpretations are clearly supported by scanning electron microscopy studies of extracted PA/PB blends. For example, Figure 1 shows a sequence of micrographs of a low polyacetylene content blend (<20% PA) extracted for different times with toluene. Figure 1(a) shows the surface texture of a typical unextracted PA/PB blend. The surface exhibits features characteristic of polybutadiene cast from a toluene solution. 

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