TEM microphotograph

GL6o-HTT gives silica samples of different porous structure (Abet = 181 m2/g for AN6o2-HTT-T and 200 m2/g for GL60-HTT-T). TEM microphotographs (Figures 3-5) confirm the above data. 

Figure 27.26 shows a TEM microphotograph for MWCNTs with the diameter of 5 nm and specific surface area of 340 m /g. 

Figure 7.7 shows the TEM image of the thin section of the different polypropylenes blended with MWCNT. The TEM microphotograph shows the diameters of MWCNT were around 15-50 nm. The spots indicate that the MWCNTs are perpendicular to the sample. From the micrographs it can be seen that the dispersion of MWCNT was in random arrays and showed interconnected structure, which also exhibited partial aggregation in the polypropylene matrix, implying lack of xmiform dispersion of MWCNT in the PP matrix. 

Figure 13.1 (a) TEM microphotograph of Ceo.78Gdo.2Sro.o202-a grounded powder prepared by Pechini sol-gel (a) and hydrothermal (b) methods. (Reproduced with permission from Ref. [22].)... 

The technology proposed was realized with the production of nanoproduct the TEM microphotograph is presented in Fig. 3.5. 

TEM microphotographs of the so-obtained samples show the typical morphology of intercalated nanocomposites. Furthermore with organo-modified fillers, in addition to small stacks of intercalated clay particles, a limited amount of completely exfoliated/delaminated silicate sheets coexists with the intercalated aluminosilicates layers. 

Fig. 15.3 TEM microphotographs of 2.6 nm CdSe-BA-6PA composite containing 20 wt.% QDs (a) (Shandryuk et al. 2008), transition temperatine vs. CdSe quantum dots content (b) and the model of the smectic nanocomposite structure (c) (Shandryuk et al. 2008)...

Fig. 3 Electron microphotographs of the superficial area of EKasic F wear tracks (a, d SEM b, e STEM c, f TEM). The net-like structure on Fig. 3b and 3e originates from the TEM sample holder foil while white spots on Fig. 3e are due to Ga contamination.

Generally, for condensed phase flame retardancy, the morphology of the char residue may help to clarify the combustion mechanism. Figure 11.7 presents TEM and SEM microphotographs of PP/1.0 wt% Ceo nanocomposites after cone calorimetry. Interestingly, compared with the pristine Ceo crystallites with a size of around 100 nm, after combustion the sizes were much smaller, 30-50 nm, though well proportioned. An explanation was that the combustion of polymers at elevated temperatures would destroy or disorder the stack state of Ceo crystals, making the size of crystals tend to be the same. 

Fig. 1. TEM (A) and SEM (B) microphotograph of MWCNT A poly-l/dl-lactide copolymer (PLDL) with ratio M/M% 80 20 (Purasorb PLDL 8038, produced by Purac) was used to manufacture the nanocomposite samples. In our investigation the copolymer was named PLDL. The samples with MWCNTs were prepared in the form of thin films and porous scaffolds.

Despite the direct visualization of nanocomposite structure TEM allows also for quantitative understanding of its internal structure as well as for observation of spatial distribution and quantity of various phases. Proper evaluation of all those features requires exploitation of a representative cross-section of the sample, which often means that many pictures have to be taken [64, 65]. Figure 21.39 presents the microphotograph which was used by Vermogen et al. [66] to define the particle curved length (L), thickness (t), and the interparticular distance in the... 

---