Polypropylene oxide fluid

Since rapid collection of erstwhile single cells can be brought about by the use of dielectrophoresis, and the shape of the mass of cells so formed is controlled by the shape of the electrodes, by the frequency of the field, and by the shape of the cells, it appeared worthwhile to see if the shapes so formed could be made more permanent, so as to prepare desired structures of the cellular aggregates. To this end, the gel-forming properties of a relatively nontoxic block copolymer solution in water were used. A concentrated aqueous solution of the block copolymer of polyethylene oxide and polypropylene oxide (PEO-PPO) is quite fluid at 0°C to about 5°C, but sets reversibly to a rather stiff gel at about 30-40°C. The PEO-PPO polymer solutions are reported to be relatively nontoxic to most organisms (Pluronic resin F-127), Wyandotte Chemicals Corp.). 

SA4 Sadeghi, R. and Ziamajidi, F., Thermodynamic properties of aqueous polypropylene oxide 400 solutions from isopiestic measurements over a range of temperatures. Fluid Phase Equil, 249, 165, 2006. 

Alrasperse 100 Rewopol TS 40 PA surfactant, upholstery shampoos Colonial LM DEA-lauryl sulfate Rewopol TS 25 Rewopol TS 35 Sodium cocoamphoacetate Sulfo-chem MG-LC TEA-lauryl sulfate surfactant, urethanes Dimethyl, methyl (polypropylene oxide) elloxene Dow Coming 1248 Fluid Troysol 307 Troysol S366 surfactant, UV coatings Drewfax S-600... 

Dimethyl, methyl (polypropylene oxide) slloxane Dow Coming 1248 Fluid... 

Polypropylene is stable in living body tissue except under the influence of oxidizing enzymes or oxygen dissolved in body fluids. 

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