منابع مشابه
Hollow Microsphere: a Review
The purpose of writing this review on Hollow microspheres is to compile the recent literature with special focus on the principal mechanism of floatation to achieve gastric retention. Hollow microsphere promises to be a potential approach for gastric retention. The recent developments of FDDS including approaches to design single-unit and multiple-unit floating systems, mechanism of floating mi...
متن کاملTrapping of microwave radiation in hollow polypyrrole microsphere through enhanced internal reflection: A novel approach
In present work, spherical core (polystyrene, PS)/shell (polypyrrole, PPy) has been synthesized via in situ chemical oxidative copolymerization of pyrrole (Py) on the surface of sulfonated PS microsphere followed by the formation of hollow polypyrrole (HPPy) shell by dissolving PS inner core in THF. Thereafter, we first time established that such fabricated novel art of morphology acts as a con...
متن کاملModelling and Characterization of Effective Thermal Conductivity of Single Hollow Glass Microsphere and Its Powder
Tiny hollow glass microsphere (HGM) can be applied for designing new light-weighted and thermal-insulated composites as high strength core, owing to its hollow structure. However, little work has been found for studying its own overall thermal conductivity independent of any matrix, which generally cannot be measured or evaluated directly. In this study, the overall thermal conductivity of HGM ...
متن کاملCylindrical Three-Dimensional Porous Anodic Alumina Networks
The synthesis of a conformal three-dimensional nanostructure based on porous anodic alumina with transversal nanopores on wires is herein presented. The resulting three-dimensional network exhibits the same nanostructure as that obtained on planar geometries, but with a macroscopic cylindrical geometry. The morphological analysis of the nanostructure revealed the effects of the initial defects ...
متن کاملHollow alumina nanospheres as novel catalyst for the conversion of methanol to dimethyl ether
This paper investigates hollow and porous alumina nanospheres that were previously synthesized to be used for the dehydration of methanol to dimethyl ether (DME). As hollow nanostructures possess characteristics such as low density and high surface to volume ratio, their catalytic activity between hollow and porous structure is compared. For this purpose, three most important parameters (acidit...
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ژورنال
عنوان ژورنال: Journal of the American Ceramic Society
سال: 2009
ISSN: 0002-7820,1551-2916
DOI: 10.1111/j.1551-2916.2008.02867.x