3/15/2023 0 Comments Solavant greenVarious experimental methods and equations of state are available to measure or predict the solubility of CO(2). CO(2) dissolution in a polymer has been interpreted physically but FT-IR studies lead to an explanation in terms of weak interactions between basic and acidic sites. Though only a few polymers are soluble in supercritical CO(2), it is quite soluble in many molten polymers. Its gas-like diffusivity and liquid-like density in the supercritical phase allow replacing conventional, often noxious, solvents with supercritical CO(2). N2 - Supercritical carbon dioxide (CO(2)) is Well established for use as a processing solvent in polymer applications such as polymer modification, formation of polymer composites, polymer blending, microcellular foaming, particle production and polymerization. T1 - Supercritical carbon dioxide as a green solvent for processing polymer melts Detailed attention is also given to recently reported applications along with aspects related to polymer processing. In this review, experimental and theoretical studies of solubility and viscosity of several polymer melts are discussed in detail. Gas solubility and viscosity reduction can be predicted theoretically from pure-component properties. CO(2) mainly acts as a plasticizer or solvent when contacted with a polymer. Dissolved CO(2) causes a considerable reduction in the viscosity of molten polymer, a very important property for the applications stated above. All rights reserved.Ībstract = "Supercritical carbon dioxide (CO(2)) is Well established for use as a processing solvent in polymer applications such as polymer modification, formation of polymer composites, polymer blending, microcellular foaming, particle production and polymerization. This work established GVL-based precursors as commercially attractive and provides an example of how green solvent engineering can be applied in the development, amelioration and scale-up of novel photovoltaics.Supercritical carbon dioxide (CO(2)) is Well established for use as a processing solvent in polymer applications such as polymer modification, formation of polymer composites, polymer blending, microcellular foaming, particle production and polymerization. Stability is also improved, with an unencapsulated MeOH device exhibiting a T80 of >420 hours at 50 ☌ in ambient humidity under continuous AM1.5 illumination. Precursors incorporating 10% MeOH are found to substantially enhance reproducibility and performance, achieving a champion PCE of 13.82% in a 1 cm 2 device and >9% in a 220 cm 2 module fabricated in ambient conditions. In this work, methanol (MeOH) solvent additives are applied to enhance the performance and reproducibility of GVL-based precursors, through improving electrode wetting, infiltration, and perovskite crystal quality. Previous work has introduced γ-valerolactone (GVL) as a sustainable, non-toxic, green alternative to GBL for CPSC perovskite precursors. Mesoscopic carbon-based perovskite solar cells (CPSCs) are frequently described as a potential frontrunner for PSC commercialization.
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