Publications by authors named "Alexander V Klinov"
This article discusses a molecular simulation of membrane processes for the separation of liquid mixtures during pervaporation. A method for simulating the structure of polyurethane membranes was developed. The method was based on the known mechanisms of the formation of macromolecules from constituent monomers.
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- Researchers developed polyurethane membranes that allow vapor to pass through using aminoethers of boric acid (AEBA), modified with bulk adducts from diphenylol propane diglycidyl ether and ethanolamine (EM).
- These modifications reduced the size of AEBA-EM particles and their viscosity, which helped the membranes become more permeable to vapor.
- The enhanced vapor permeability, which was tripled in the modified polyurethanes, occurs due to reduced cluster size that creates channels for water molecules, improving the membranes' efficiency in dehydrating isopropanol.
Organophosphorus polyurethane ionomers (AEPA-PU) based on aminoethers of -phosphoric acid (AEPA) were obtained and studied as pervaporation membrane materials for separating isopropanol/water mixtures. The regularities of the change in the water vapor permeability of AEPA-PU were also investigated. It has been established that an increase of solute content in the composition of the urethane-forming system and the content of ionogenic groups in AEPA leads to a noticeable increase in the vapor permeability of the resulting film materials.
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