Polyether derivatives of zirconium phosphate
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-Zirconium phosphate, Zr(HPO4)2-2H2O, with a 12.2- interlayer spacing is known to react with ethylene glycol solutions to form glycol esters of the zirconium phosphate. It has now been shown that the polymorph with a smaller interlayer distance (7.6 ) also behaves similarly. With highly crystalline samples of -zirconium phosphate, reaction takes place only at the surface. However, if the interlayer distance is first increased so that ethylene oxide can diffuse into the: interior, complete reaction ensues. Less crystalline samples were found to react directly with ethylene oxide, either as a gas or as a solution. Attempts to form long polyether chains by direct reaction were unsuccessful. However, by the preparation of first polyether phosphates and then the reaction of these compounds with Zr(IV) species, polyether analogues of a-zirconium phosphate were prepared. These derivatives incorporate electrolytes and form novel colloidal dispersions. 1985, American Chemical Society. All rights reserved.
author list (cited authors)
Ortiz-Avila, C. Y., & Clearfield, A.
complete list of authors
Ortiz-Avila, CY||Clearfield, A