Properties scanning electron micrograph

The results of mechanical properties (presented later in this section) showed that up to 20 phr, the biofillers showed superior strength and elongation behavior than CB, cellulose being the best. After 30 phr the mechanical properties of biocomposites deteriorated because of the poor compatibility of hydrophilic biopolymers with hydrophobic natural rubber(results not shown). While increasing quantity of CB in composites leads to constant increase in the mechanical properties. Scanning electron micrographs revealed presence of polymer-filler adhesion in case of biocomposites at 20 phr. 

Shape and composition of fibers influenced film properties. Scanning electron micrographs of SC, OR and AP are provided in Fig 2, a, b, c. 

The results of the mechanical properties can be explained on the basis of morphology. The scanning electron micrographs (SEM) of fractured samples of biocomposites at 40 phr loading are shown in figure. 3. It can be seen that all the bionanofillers are well dispersed into polymer matrix without much agglomeration. This is due to the better compatibility between the modified polysaccharides nanoparticles and the NR matrix (Fig. 4A and B). While in case of unmodified polysaccharides nanoparticles the reduction in size compensates for the hydrophilic nature (Fig. 3C and D). In case of CB composites (Fig. 3E) relatively coarse, two-phase morphology is seen. 

Fig. 17. a A scanning electron micrograph of square pores etched in a 3 micrometer thick silicon membrane. The pores were produced by anisotropic etching and their width on this side of the membrane is 6 pm. Cells (fibroblasts 3T3) attach to the surface and migrate over the pores, b Electrodes are placed on either side of the membrane and a constant current passed through it (mainly through the pores). The presence of cells is easily detected and movements of cell filopodia of less than 100 nm and the passive electric properties of the cell body can be determined by analysis of the signal fluctuations and impedance... 

Fig. 11.27 Scanning electron micrograph of calcium carbonate-filled polypropylene the primary particle size is 0.15 pm the volume fraction of filler 0.08. [Reprinted by permission from Y. Suetsugu, State of Dispersion-Mechanical Properties Correlation in Small Particle Polymer Composites, hit. Polym. Process., 5, 184 (1990).]...

Figure 10.12 Scanning electron micrographs (a) and hydrogen sorption properties (b) for MgH2 nanowires with diameters of 30-50, 80-100, and 150-170nm (decreasing size...

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