Rapid expansion of supercritical fluid

Tsutsumi, A., Nakmoto, S., Mineo,T., and Yoshida, K., A Novel Fluidized-Bed Coating of Fine Particles by Rapid Expansion of Supercritical Fluid Solutions, Proc. 1st Int. Particle Technol. Forum, pp. 452-455, Denver, CO (1994)... 

Matson, D. W. Petersen, R. C. Smith, R. D. The Preparation of Polycarbosilane Powders and Fibers during Rapid Expansion of Supercritical Fluid Solutions. Mater. Lett. 1986b, 4, 429 132. 

D.W. Matson, J.L. Fulton, R.C. Petersen, R.D. Smith, Rapid expansion of supercritical fluid solutions solute formation of powders, thin films and fibers, Ind. Eng. Chem. Res. 26 (1987) 2298-2306. 

A. Tsutsumi, S. Nakamoto, T. Mineo, K. Yoshida, A novel fluidized-bed coating of fine particles by rapid expansion of supercritical fluid solutions, Powder Technol. 85 (1995) 275-278. 

The magnetic metals were also prepared by a method [25] based on the rapid expansion of supercritical fluid solutions (RESS) coupled with chemical reduction to produce nickel, cobalt, iron, and iron oxide nanopartides of reasonably narrow size distribution. Under the protection of a polymer stabilization agent, the largely amorphous metal nanopartides form stable suspensions in room-temperature solvents. 

Meziani, M. J. and Sun, Y. P. (2003). Protein-conjugated nanoparticles from rapid expansion of supercritical fluid solution into aqueous solution. J. Am. Chem. Soc. 125, 8015-8018. Meziani, M. J., Pathak, P., Hurezeanu, R., Thies, M. C., Enick, R. M., and Sun, Y. P. (2004). Supercritical fluid processing technique for nanoscale polymer particles. Angew. Chem. Int. Ed. Engl. 43, 704—707. 

Petersen RC, Matson DW, Smith RD. The formation of polymer fibers from the rapid expansion of supercritical fluid solutions. Polym Eng Sci 1987 27 1693-1697. 

Matson, D. W., R. C. Peterson, and R. D. Smith. 1987. Production of fine powders by the rapid expansion of supercritical fluid solutions. Adv. in Ceramics 21 109. 

A variety of methods have been reported for producing microspheres including phase separation by polymer/polymer incompatibility and coacerva-tion [81] solvent evaporation or solvent removal [82] hot-melt microencapsulation spray drying interfacial polymerization and supercritical fluidprocessing teehniques (such as the gas antisolvent spray precipitation process [83] or rapid expansion of supercritical fluids [84]). The characteristics of the most important of these methods have been reviewed [85, 86]. 

Micro-encapsulation of drug-polymer systems using flic RESS (Rapid Expansion of Supercritical Fluid Solutions) techniques have been initiated with limited success due to poor understanding of the complex phenomena involved in co-nucleation of components. Not only do the particles have to be nucleated with the desired particle size and shape but also encapsulate the material simultaneously in an uniform fashion. 

Matson D.W., Frulton J.L., Petersen R.C., Smith R.D. (1987), Rapid expansion of Supercritical Fluid Solutions Solute Formation of Powders, Thin Films, and Fibers, Ind.Eng.Chem.Res. 26,2298. 

Polymer Encapsulation by Rapid Expansion of Supercritical Fluids... 

Varshosaz J, Hassanzedh F, Mahmoudzadeh M, Sadeghi A (2009) Preparation of cefuroxime axetil nanoparticles by rapid expansion of supercritical fluid technology. Powder Technol 189(1) ... 

Homogeneous precipitation of particles from supercritical solvents (rapid expansion of supercritical fluids (RESS)). Applications are microparticles for pharmaceutics [45]. 

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