Morphologies by scanning electron

Eldem, T. Speiser, P. Hincal, A. Optimization of spray-dried and -congealed lipid micropellets and characterization of the surface morphology by scanning electron microscopy. Pharm. Res. 1991, 8, 47-54. 

Andrade, J. D., Cleman, D. L., and Gregonis, D. E., Characterization of polymer surface morphology by scanning electron microscopy using backscattered electron imaging, Makromol. Chern. Rapid Cornrnurt., I, 101-104 (1980). 

A novel nanocomposite membrane, poly dimethyl siloxane (PDMS)/Au was prepared for carbon dioxide/methane separation. Synthesis of stabilized nano particles is also reported. The nanoparticles were characterized by UV-visible spectroscopy and transmission electron microscopy (TEM). The hybrid membrane was characterized morphologically by scanning electron microscope (SEM) and the change in inter-segmental distance due to filler loading by wide angle X-ray diffraction patterns (WAXD). The gas transport properties were measured at different pressures and temperatures. The effects of filler loading on permselectivity, diffiisivity selectivity and solubility selectivity are reported for CO2/CH4 separation. Reverse selective phenomena of PDMS/Au nanocomposite membrane over the conventional PDMS membrane is explained based on sorption kinetics of CO2. 

The morphology of the CuCl precipitates were observed by scanning electron microscopy (SEM). The SEM microscopy was carried out with a beam energy of 15kV. 

Fig. 9.2. Cuticle collagen and morphological mutants of C. elegans. A selection of adult-stage C. elegans morphological mutants were analysed by scanning electron microscopy and compared with the wild-type N2 strain. Mutant alleles depicted are dpy, dumpy rot, roller Ion, long bli, blister. Scale bar represents...

Figure 4. The effect of ultrasonic irradiation on surface morphology of approximately 5 /nm as shown by scanning electron micrographs of Ni powder.

X-ray diffraction patterns were recorded on a Philips PW1820 diffractometer with Cu-Ka radiation (X = 0.154 nm). The collected sample was indexed very well as cubic a-Mn203 bixbyite (JCPDS 41-1442, la-3, a = 0.941 nm) (Fig. 1). The morphologies were visualized by scanning electron microscopy (SEM) (Fig. 1). The abundant well-defined hexagonal-like plates with the sizes from several hundred nanometers to a few micrometers were formed during hydrothermal treatment, which kept initial shape after 700 °C-calcination (Fig. 1). The hexagonal plates are about 50 nm thick with smooth surfaces. 

The structure and phase purity of the synthesized materials were determined by X-ray powder diffraction (XRD). The morphology was investigated by scanning electron microscopy (SEM). 

Tg (-22 °C) of a homogeneous 70/30 PNIPAM-water mixture. Observation of samples by scanning electron microscopy and optical microscopy revealed that the morphology of the polymer-rich phase is preserved only if the polymer solutions are brought to zone C. Polymer solutions heated to zone B undergo demixing upon quench-cooling [160]. Aqueous solutions of PVCL, PNIPMAM, and PNIPMA exhibit similar behaviour [157,158,369,370]. 

E. Morphology of Pseudo-IPN Coatings by Scanning Electron Microscopy (SEM)... 

Limited evidence from microsurgical ablation experiments suggests that semio-chemicals are perceived by the external scapular setae (Leal el al., 1989f). The morphology of the setae has been characterized by scanning electron microscopy (Leal and Mochizuki, 1990). 

Ideally, rubber toughening should be accomplished without substantial sacrifices in modulus. For each modified resin, flexural and Young moduli and plane-strain fracture toughness were determined. Examination of various fracture surfaces by scanning electron microscopy showed the effects of modifier composition on the morphology of these multi-phase materials as well as the prominent features of the fracture process. 

The chemical compositions were determined by atomic absorption. The crystallinity of the samples was checked by XRD technique. Size and morphology of the crystals were examined by scanning electron microscopy. 

In HeLa cells, the striking morphological alterations which follow exposure of the cells to butyrate are characterized by the extension of neurite-like processes (Fig. 1). No significant differences in the fine structure of the ceil surface was observed by scanning electron micrography (Fig. 1). In addition to butyrate, propionate and pentanoate but not other homologous... 

Fig. 27 Foam morphology of (PPE/PS)/SAN blends, as observed by scanning electron microscopy (foaming temperature 180°C, foaming time 10 s)...

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