PDF Publication Title:
Text from PDF Page: 007
Polymerizations in Supercritical Carbon Dioxide Chemical Reviews, 1999, Vol. 99, No. 2 549 Figure 1. Stuctures of fluorinated polymeric surfactants for CO2. Figure2. StucturesofPDMS-basedpolymericsurfactants for CO2. fluorooctyl acrylate) (PFOA) (1) homopolymer, PS-b- PFOA (2), or PFOA-b-poly(vinyl acetate)-b-PFOA. A distinct change in the emulsion stability was ob- served at the critical flocculation density (CFD), which corresponded with the θ point (where the second virial coefficient equals zero) for PFOA in bulk CO2. The CFD is the density at which particles flocculate due to collapse of the soluble portion of the surfactant. While PFOA resulted in bridging floc- culation of PEHA particles below the CFD, PS-b- PFOA was more strongly adsorbed and flocculation below the CFD was slower. In the companion study,78 dynamic light scattering confirmed the correlation between the CFD and the θ point density of PFOA in CO2 by monitoring the PEHA droplet size as a function of time and CO2 density in the presence of surfactant. Further theoretical developments have more recently been made by Meredith and Johnston for homopolymer stabilizers79 and copolymer and end- graft stabilizers80 in a supercritical fluid. The adsorp- tion of surfactant at a planar surface and the free energies of interaction between two such surfaces were modeled. The effects of solvent density on the adsorbed amount of stabilizer and layer thickness, both of which would influence colloid stability, were examined. General design criteria was provided for copolymer and end-graft stabilizers. It is clear from these studies on steric stabilization in CO2 that for effective stabilization, the surfactant must anchor toPDF Image | Polymerizations in Supercritical Carbon Dioxide
PDF Search Title:
Polymerizations in Supercritical Carbon DioxideOriginal File Name Searched:
desimonepolymerization.pdfDIY PDF Search: Google It | Yahoo | Bing
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
IT XR Project Redstone NFT Available for Sale: NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Be part of the future with this NFT. Can be bought and sold but only one design NFT exists. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Turbine IT XR Project Redstone Design: NFT for sale... NFT for high tech turbine design with one part 3D printed counter-rotating energy turbine. Includes all rights to this turbine design, including license for Fluid Handling Block I and II for the turbine assembly and housing. The NFT includes the blueprints (cad/cam), revenue streams, and all future development of the IT XR Project Redstone... More Info
Infinity Turbine ROT Radial Outflow Turbine 24 Design and Worldwide Rights: NFT for sale... NFT for the ROT 24 energy turbine. Be part of the future with this NFT. This design can be bought and sold but only one design NFT exists. You may manufacture the unit, or get the revenues from its sale from Infinity Turbine. Royalties go to the developer (Infinity) to keep enhancing design and applications... More Info
Infinity Supercritical CO2 10 Liter Extractor Design and Worldwide Rights: The Infinity Supercritical 10L CO2 extractor is for botanical oil extraction, which is rich in terpenes and can produce shelf ready full spectrum oil. With over 5 years of development, this industry leader mature extractor machine has been sold since 2015 and is part of many profitable businesses. The process can also be used for electrowinning, e-waste recycling, and lithium battery recycling, gold mining electronic wastes, precious metals. CO2 can also be used in a reverse fuel cell with nafion to make a gas-to-liquids fuel, such as methanol, ethanol and butanol or ethylene. Supercritical CO2 has also been used for treating nafion to make it more effective catalyst. This NFT is for the purchase of worldwide rights which includes the design. More Info
NFT (Non Fungible Token): Buy our tech, design, development or system NFT and become part of our tech NFT network... More Info
Infinity Turbine Products: Special for this month, any plans are $10,000 for complete Cad/Cam blueprints. License is for one build. Try before you buy a production license. May pay by Bitcoin or other Crypto. Products Page... More Info
| CONTACT TEL: 608-238-6001 Email: greg@infinityturbine.com | RSS | AMP |