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In solvent casting and particulate leaching (SCPL), a polymer is dissolved in an organic solvent. Particles, mainly salts, with specific dimensions are then added to the solution. The mixture is shaped into its final geometry. For example, it can be cast onto a glass plate to produce a membrane or in a three-dimensional mold to produce a scaffold.
Biological substances can experience leaching themselves, [2] as well as be used for leaching as part of the solvent substance to recover heavy metals. [6] Many plants experience leaching of phenolics, carbohydrates, and amino acids, and can experience as much as 30% mass loss from leaching, [5] just from sources of water such as rain, dew, mist, and fog. [2]
Polymer solution casting technology can be deployed utilizing a host of different polymer materials depending on the application and design inputs, including those used in Class I, II and III medical devices, [2] and for the preparation of polymer electrolytes.
Solvent casting and particulate leaching (SCPL) allows for the preparation of structures with regular porosity, but with limited thickness. First, the polymer is dissolved into a suitable organic solvent (e.g. polylactic acid could be dissolved into dichloromethane ), then the solution is cast into a mold filled with porogen particles.
Today's NYT Connections puzzle for Wednesday, January 15, 2025The New York Times
Solvent casting and particulate leaching; Spherulite (polymer physics) Star-shaped polymer; Styrene-butadiene; SU-8 photoresist; Superabsorbent polymer; Supramolecular polymer; Surface and bulk erosion; Synthetic biodegradable polymer; Synthetic biopolymer; Synthetic resin; Syrup
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