Synthesis and properties of simple and complex polymetaphosphate glasses of alkali metals

摘要: ABSTRACT Synthesis of a large number simple and complex polymetaphosphate glasses alkali metals with the general formulae (MxM′(1-x)PO3)n (MxM″1–x/2PO3)n has been described, where M M′ = Li, Na, K, Rb or Cs; M″ Be, Mg, Ca, Sr, Ba, Zn, Cd, Pb, Cu Ni; x 1, ⅔, ½ ⅓. The preparations have carried out by heating dihydrogen phosphate, metal oxide (or carbonate) diammonium hydrogen phosphate together in desired stoichiometric ratios at 700°, 800° 900°, followed chilling clear melts obtained. Some these derivatives also prepared treating salt solutions precipitation alcohol. A detailed study made following properties derivatives: molecular weights (Mw Mn), viscosity, conductivity, i.r. n.m.r. spectra. All shown to behave as long chain metaphosphates their polymeric character further supported chromatographic metachromatic studies.