Polyox properties

Radiation effects on polymers are more subtle than normal radiation chemistry, in that small chemical changes may have pronounced effects on the physical properties. Because of the sensitivity of these physical properties, the radiation chemistry of Polyox is best discussed in two parts—the chemical reactions occurring and the effects of these reactions on the physical properties. 

Little RC (1969) Flow properties of polyox solutions Ind Eng Chem Fundam 8 557... 

Poly Ethylene Oxide) (PEO) Polymers. In the same family as PEG, but having higher molecular weights are POLYOX resins, which are water-soluble polymers. Because of their low melting point and unique swelling properties, coupled with the controlled rate of dissolution, POLYOX resins have been used to make sustained-release formulations by hot-melt extrusion.f ... 

Lindner E, Kehrer U, Steimann M, Strobele M. 2001. Preparation, properties, and reactions of metal containing heterocycles part cv. Synthesis and structure of polyox adiphosphaplatinaferrocenophanes. J Organomet Chem 630 266 274. 

Microbial Considerations Does not contain an antimicrobial as sold. Normal precautions need to be followed to include a preservative in a formulation containing Polyox Regulatory Status Three grades have been approved for use and sale by MHW in Japan (PEG-9M. PEG-14M, PEG-90M). All grades have been shown to be safe and are sold in the other major markets, including North America and Europe Special Comments Impart a great deal of lubricity to a solution. They are extremely mild and are excellent film formers. At high concentrations, Polyox resins can add adhesive properties to a product... 

Poly(ethylene oxide) <25-80 (Tr ) Polyox Mechanical properties ideal for abuse-deterrent applications and CR Process temperatures 70 °C Excellent CR polymer... 

Therefore, we have to use non-classical lubricants, which are pseudoplastic fluids, the power losses reducing properties of which have been experimentally verified by Nicolas [6] in 1979 using Guar and Polyox in plain bearings. 

Properties. Gamma-polyox miethylene is a colorless cn stalline product which decompt es on heating in the temperature range 160-210 C. The exact temperature of decomposition depends on the method of preparation and purification. It melts to a clear liquid at approximately 160-180°C. On % aporization, it depolymerizes to monomeric formaldehyde gas. The pohmer does not smell of formaldehyde and is insoluble in water and organic solvents. It is not affected by dilute alkalies, but dissolves with hydrolysis in acidic solutions when heat is appHed. 

---