Solvent Casting
Solvent Casting - Related Videos
01:12
Solvents
0 Views •
2019
A solvent is a substance, most often a liquid, that can dissolve other substances. Here, the substance being dissolved is called a solute. When a solvent and a solute combine, they form a solution - a homogenous mixture of both the solvent and the solute. Water is a universal biological solvent. Its polar structure allows it to dissolve many other polar compounds. The ability of water to dissolve is governed by a balance between water molecules binding to each other and binding to the solute. A...
06:43
Rotary Evaporation to Remove Solvent
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2023
Source: Dr. Melanie Pribisko Yen and Grace Tang — California Institute of Technology Rotary evaporation is a technique most commonly used in organic chemistry to remove a solvent from a higher-boiling point compound of interest. The rotary evaporator, or "rotovap", was invented in 1950 by the chemist Lyman C. Craig. The primary use of a rotovap is to dry and purify samples for downstream applications. Its speed and ability to handle large volumes of solvent make rotary evaporation a preferred...
09:41
Schlenk Lines Transfer of Solvents
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2023
Source: Hsin-Chun Chiu and Tyler J. Morin, laboratory of Dr. Ian Tonks—University of Minnesota Twin Cities Schlenk lines and high vacuum lines are both used to exclude moisture and oxygen from reactions by running reactions under a slight overpressure of inert gas (usually N2 or Ar) or under vacuum. Vacuum transfer has been developed as a method separate solvents (other volatile reagents) from drying agents (or other nonvolatile agents) and dispense them to reaction or storage vessels while...
08:32
Indirect Fabrication of Lattice Metals with Thin Sections Using Centrifugal Casting
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Cited by 8 •
2016
An indirect additive manufacturing method combining a 3D printing of polymers with a centrifugal casting is outlined for manufacturing 3D octet truss metals (Al and Cu alloys) having a unit cell length of 5 mm with a wall thickness of 0.5 mm.
08:13
Preparation of Biopolymer Aerogels Using Green Solvents
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Cited by 45 •
2016
A new way for the production of biopolymer-based aerogels by carbon dioxide (CO2) induced gelation is shown. The technique utilizes pressurized carbon dioxide (5 MPa) for the production of biopolymer hydrogels and supercritical CO2 (12 MPa) to convert gels into aerogels. The only solvents needed besides CO2 are water and ethanol.
FAQs
Solution composition, casting conditions, and drying rate are the principal variables controlling the resulting film. They influence how much material remains in the cast layer, how polymer chains interact as solvent leaves, and the final thickness and properties. Adjusting these variables lets chemists compare materials systematically and relate processing conditions to structure, mechanics, permeability, or thermal performance.
Drying rate matters because it is one of the casting conditions that shapes the film’s final properties. Together with solution composition and other casting conditions, it governs the path by which polymer chains concentrate, interact, and organize. Comparing different drying rates can therefore help researchers investigate changes in structure, mechanical behavior, permeability, and thermal performance.
Solvent casting can produce materials for examining structure, mechanical behavior, permeability, and thermal performance. These outcomes allow a chemistry study to assess how a film’s processing history relates to its behavior, rather than considering composition alone. The same prepared material can therefore serve as a platform for comparing structural and functional performance across polymer films, coatings, membranes, or composites.
A solvent-casting workflow is organized around three controllable elements: the film-forming solution, the surface used for spreading, and the evaporation stage. Researchers can vary solution composition, casting conditions, and drying rate, then examine the resulting film thickness and properties. This makes the technique useful for controlled preparation and comparative materials studies in chemistry.
The technique supports preparation of polymer films, coatings, membranes, and composite materials. These formats extend its use beyond basic film formation: researchers can investigate packaging materials, separation systems, and drug-delivery materials. The selected format depends on the functional material being studied and on whether the research emphasizes structure, mechanical behavior, permeability, or thermal performance.
Solvent casting connects solution-based processing with the study of solid material performance. Chemists can prepare functional materials while examining how solution composition and casting conditions affect thickness, structure, and behavior after solvent removal. This connection supports research on polymer-based materials for packaging, separation, and drug delivery, as well as comparative studies of mechanical, permeability, and thermal properties.