Most of the natural products isolated at present are heterocyclic compounds, so heterocyclic compounds occupy an important position in the research of organic chemistry. A compound: 931-40-8, is researched, SMILESS is O=C1OCC(CO)O1, Molecular C4H6O4Journal, Article, Langmuir called Osmotic Swelling of Sodium Hectorite in Ternary Solvent Mixtures: Nematic Liquid Crystals in Hydrophobic Media, Author is Mayr, Lina; Amschler, Sonja; Edenharter, Andreas; Dudko, Volodymyr; Kunz, Raphael; Rosenfeldt, Sabine; Breu, Josef, the main research direction is osmotic swelling sodium hectorite; ternary solvent mixture nematic liquid crystal hydrophobic.SDS of cas: 931-40-8.
The swelling of clay minerals in organic solvents or solvent mixtures is key for the fabrication of polymer nanocomposites with perfectly dispersed filler that contain only individual clay layers. Here, we investigated the swelling behavior of sodium hectorite in different ternary solvent mixtures containing methanol, acetonitrile, ethylene glycol, or glycerol carbonate with minimal amounts of water. We found that in these mixtures, less water is required than in the corresponding binary mixtures to allow for complete delamination by repulsive osmotic swelling. A quant. study of osmotic swelling in a particular ternary mixture shows that organic solvents resemble swelling behavior in pure water. At hectorite contents larger than 5 vol %, the separation of individual layers scales with ϕ-1. At this concentration, a crossover is observed and swelling continues at a slower pace (ϕ-0.5) below this value.
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