A fusion technique was used for the preparation of derivatives of the composition [Na x M(1− x)/2a Gd(1− x)/2a PO3] n (where M = bivalent metal like Cu(II), Ca(II), Zn(II), Ni(II), and Mg (II); x = 1/2, 3/4, & 2/3; and a = valency of metal). Composition of these polyphosphate glasses was confirmed by their analyses for metals and phosphorus. The polymeric nature of all polyphosphate glasses was confirmed by the determination of a number average molecular weight (M n ). The characteristic frequencies in the IR spectra are supportive of the presence of polyphosphate indicative of the polymeric nature of these derivatives. From X-ray diffraction, the amorphous nature of complex polyphosphates has been determined.
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Acknowledgments
Mahesh K. Samota is grateful to the Council of Scientific and Industrial Research, New Delhi, for financial support in the form of direct Junior Research Fellow vide grant No. 9/149 (325)/2K3-EMR-I.