Static Light Scattering Study of Size Parameters in Core–Shell Colloidal Systems

✍ Scribed by Arturo Quirantes; Rosario Plaza; Angel Delgado

• Book ID: 102580275
• Publisher: Elsevier Science
• Year: 1997
• Tongue: English
• Weight: 453 KB
• Volume: 189
• Category: Article
• ISSN: 0021-9797
• DOI: 10.1006/jcis.1997.4828

✦ Synopsis

Presently, static light scattering is used to determine the The applicability of static light scattering as a tool for particle size (or size distribution) of core-shell systems of biological sizing is evaluated for spherical core-shell systems. A series of and biochemical significances, ranging from vesicles and intensity-angle measurements have been made on hematite ( amicroemulsions to polymers (2-6). Pharmaceutical applica-Fe 2 O 3 ) particles covered by yttrium basic carbonate (Y(OH)CO 3 ) tions include the study of coated particles as potential delivshells; size parameters-including polydispersity-have been deery systems. duced by means of the Aden-Kerker scattering theory, and the In this work, light scattering has been applied to the study results have been compared to electron microscopy. Some explanaof hematite (a-Fe 2 O 3 ) core particles surrounded by an yttions are given concerning the higher degree of polydispersity trium basic carbonate (Y(OH)CO 3 ) coating. The techniques yielded by Aden-Kerker theory compared to electron microscopy observations.