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UPN Ref Technology
196 SUPERCRITICAL FLUIDS
Supercritical fluids are involved in a wide variety of applications which have shown a significant progress in recent years. Many industrial sectors are concerned including cosmetics, pharmaceutics, materials, chemistry or energy. Other areas are in rapid development such as the cleaning of mechanical parts or the surface preparation of microelectronics. It should be noted that water (Tc = 374 °C, Pc = 221 bars), which critical point is higher than that of CO2 (Tc = 31 °C, Pc = 74 bars), is nevertheless very much studied as a reaction medium, finding applications in the synthesis of nanoparticles and the recovery and treatment of waste.
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55 Innovative process for the production of metal fluorides
A recently developed process to produce nanoparticles on the basis of metal-fluorine compounds. These metal fluorides offer new perspectives to a broad range of applications including coatings, ceramics and catalysts.
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54 Elastic fast swelling hydrogel
A fast responsive superporous hydrogel technology. The crosslinking is maintained by hydrolyzable diacrylate polymer and vinyl modified polypeptide. As these crosslinks break down, the material will start to fall apart and shrink. In addition, this superporous hydrogel is elastic (mechanically resilient) as it can be stretched more than 100% of its original size.
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51 Photochromic polymers for human uses
The proposed technology consists of new photohromic polymers developed by using novel photochromic naphthopyrane derivatives. These polymer materials are safe and biocompatible.
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23 Making adhesives surfaces reversible
Thermo-expandable microspheres (TEMs), which consist of an outer shell of copolymer thermoplastic resin encapsulating a liquid hydrocarbon, when the heat trigger is applied at command the microspheres expand to over 100 times their volume, acting as a pressure activator to cleanly break the bond at the interface, and the cohesive structure. A key part of the patented technology is the functionalization of the TEMs surfaces, e.i. a conducting material is applied onto the polymeric shells of the microspheres. This additional layer enables quicker ways to get the heat to the TEM surface without damaging the material itself.
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