Scanning electron micrographs fracture surfaces

FIGURE 18.2 Scanning electron micrograph fracture surface of PLA-wood flour composite. The arrows indicate fiber pullout [61]. 

Figure C2.11.5. Scanning electron micrographs showing the microstmcture of an alumina ceramic spark-plug body (a) fracture surface and (b) polished and thennally etched cross section.

The infrared spectra demonstrate that there is a strong interaction between CR and the PS segment of SBS and between SBS and BR. Scanning electron micrographs of the fracture surfaces further support the conclusion. The fracture surface of 70 30 BR/CR shows layer-shaped morphology and 30 70 blends show hillock-shaped protmsions. Addition of 5% SBS reduces the particle size, makes the particles more spherical, and enhances uniform distribution. This provides further evidence of the compatibilizing effect of SBS. 

Scanning electron micrographs of fracture surfaces revealed the presence of both amorphous and crystalline phases which corresponded to results from XRD analysis (Figure 6.12). What is of interest is that the crystalline phase is MgHP04.3H20 and not Mg(H2P04)2.2H2O or... 

Fig. 10. Scanning electron micrograph of a fracture surface parallel to the direction of extrusion of an extrudate of a 45 55 PS-HDPE blend with a viscosity ratio p 1. Fibrous PS is shown at different stages of breakup the diameter of the largest fiber is about 1 pm (Meijer el til., 1988).

Figure 5. Scanning electron micrograph of tensile fractured surface of 30% glass reinforced MA-modified PP (unstabi1ised, 1C1-HF22).

Fig.18a-b. Scanning electron micrographs on cryo fractured surfaces of a macroporous epoxy prepared with 6 wt % hexane via the Cl PS technique showing a narrow size distribution b macroporous epoxy prepared with 7.5 wt % hexane via the CIPS technique showing a narrow size distribution. Reprinted from Polymer, 37(25). J. Kiefer, J.G. Hilborn and J.L. Hedrick, Chemically induced phase separation a new technique for the synthesis of macroporous epoxy networks p 5719, Copyright (1996), with permission from Elsevier Science... 

Figure 13. Scanning electron micrograph of fractured surface of iso-UP after flexural test. (50A hr, 80°C, lOwt.% NaOH solution)...

Figure 9.3 Scanning electron micrographs of fracture surface of raw potato parenchyma from different cultivars (a) Small size cells, (b) Large size cells.

Figure 15.6A Scanning electron micrographs (SEM) of fractured surfaces of (a) TPS-natural MMT nanocomposite containing 9.8 wt% clay, and (b) TPS-NH4MMT nanocomposite containing 10.7 wt% clay, (c) is the enlarged image for (b) showing spontaneously formed regular foam structures with 84% porosity in TPS-ammonium-treated clay.

Figure 6. Scanning electron micrographs of freeze-fracture surfaces for injection molded (A), dioxane cast (B), and pyridine cast (C) blends at a composition of 15% lignin. (2000X) (From ref. 10, with permission of But-terworth ic Co., Ltd.)...

Fig. 3—Scanning electron micrograph of the tablet fracture surface from a matrix tablet. Compressive force, 2 kN core coat ratio, 1 1.

Fig. 54 Scanning electron micrographs of the tensile fractured surface of 50 CR/50 XNBR blends with modified layered silicate (a) and without any filler (b)...

Eig. 20. Scanning Electron Micrographs of the fracture surfaces of epoxy composites made with the same A carbon fiber with three different interphase conditions. Fracture is perpendicular to the... 

Scanning electron micrographs of fracture surfaces of SPS samples (a) reference sample sintered at 15002C for 3 min at 50 MPa (b) sample with MWNTs dispersed and located between grains, sintered at 1500QC for 5 min at 100 MPa. 

Figure 5.25 Scanning electron micrographs of fracture surfaces of polypropylene/wood fibres composites. Left with maleated PP right without MAPP...

Scanning electron micrographs of fractured microspheres reveal that the pores in the polymeric matrix became smaller and more numerous when the level of NaOH was increased. The increased surface area generated by these pores may account for the enhanced drug release observed with microspheres prepared in the presence of base. 

Figure 1.4. (a) Scanning electron micrograph of a fractured cross section of a mineralized tooth from the radula in Fig. 1.1. (b) Enlargement of the upper part of the same fractured cross section. The magnetite layer (M) lines the interior surface. The thick dahllite layer (D) is on the exterior. The thin lepidocrocite layer (L) is sandwiched between the two. C, organic sheath and cell remnants. 

Figure 1.8. Scanning electron micrograph of a fracture surface through crown dentin of a human tooth. Various tubules are viewed in cross section. The dense envelope around the tubules is composed of peritubular dentin (PT). Intertubular dentin (ID) is...

Figure 1. Scanning electron micrograph of fracture surface of a mesophase pitch carbon fiber etched with chromic acid to reveal the radial arrangement of constituent lamellar molecules.

Figure 33. Scanning electron micrographs of the fracture surface of a 3D carbon/carbon composite (59) Fiber pullout causes increased energy consumption in fracture.

Figure le. Scanning electron micrograph of the etched fracture surface of the 15/25 PC-PST blend... 

Figures la, lb, lc, and Id show transmission electron micrographs of the blends with 5, 10, 20, and 25 wt% PST, respectively. PC forms the continuous phase and PST is dispersed as spherical particles without any aggregation. The observed oval shape of the dispersed particles results from the deformation of the specimens during ultramicrotome sectioning. Their normal spherical shape is evident from scanning electron micrographs of the etched fracture surface of these blends (Figure le).

Figures 3a, 3b, 3c. (a) (above) Optical micrograph of the microtomed section of a 50/50 PC-PST blend. (b) (top right) Scanning electron micrograph of the PST phase in the 50/50 PC-PST blend. (c) (bottom right) Scanning electron micrograph of the etched fracture surface of the 50/50 PC-PST blend showing...

Figure 19. Scanning electron micrographs from the fracture surface of a PP blend with 20% EPDM. (a, top) Corresponding to Figure 17 (b, bottom) corresponding to Figure 18.

Figure 3. Scanning electron micrograph of a typical fracture surface of a highly crosslinked polyurethane resin containing 8% w/w of dispersed polymyrcene-based rubber particles.

Unfortunately the surface of the complexed sample cannot be replicated and examined by electron microscopy because the solvents normally used perturb the complex by introducing artifacts. However scanning electron micrographs of these fracture surfaces indicate that the morphology of the original polymer is modified considerably by the I2-KI treatment—a fact consistent with the wide angle x-ray and other evidence. It has been pointed out elsewhere (11) that thin films and fibers of complexed polyamides are very pliable and often putty-like when first removed from the complexing solution this fact is consistent... 

Figure 11. Scanning electron micrograph of ductile fracture surface in PC/PE. PE is in the form of light-colored spherical particles.

Figure 5. Scanning electron micrographs of drawn HMS fibrils on fracture surface. Magnifications are 10,000X and 15,000X for (a) and (b) respectively. The HMS sample was crystalized at 60°C.

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