Supercritical Antisolvent Particle Precipitation: In Situ Optical Investigations
β Scribed by A. Braeuer; S. Dowy; R. Schatz; M. Rossmann; E. Schluecker; A. Leipertz
- Publisher
- John Wiley and Sons
- Year
- 2010
- Tongue
- English
- Weight
- 419 KB
- Volume
- 33
- Category
- Article
- ISSN
- 0930-7516
No coin nor oath required. For personal study only.
β¦ Synopsis
Abstract
The manner in which the presence of a solute can affect the mixing behavior of a solute, solvent and antisolvent in a supercritical antisolvent (SAS) micronization process is demonstrated. The mixing behavior was analyzed by applying a twoβdimensional (2D) Raman scattering technique. Mole fraction and partial density distributions were measured for the CO~2~ antisolvent. The results originating from the optical investigations were correlated with the particle results. The experiments cover the variation of the solute concentration at fixed operating conditions of 10 MPa and 40βΒ°C.
π SIMILAR VOLUMES
A coaxial nozzle was developed to achieve further control over the morphology of microparticles precipitated from solution by carbon dioxide as a compressed fluid antisolvent. The polymer solution was sprayed through the core of the nozzle and CO 2 through the annulus. For the coaxial nozzle versus
The usability of the gradient force trapping technique for observing Raman scattering from single droplets during the emulsion polymerization process of styrene is examined. We are able to follow the progress of the polymerization reaction by characterizing spectroscopically the different kinds of d