Structure of zinc polyphosphate glasses

• Published in: Journal of non-crystalline solids Vol. 226; no. 3; pp. 287 - 293
• Main Authors: Sales, B.C, Otaigbe, J.U, Beall, G.H, Boatner, L.A, Ramey, J.O
• Format: Journal Article
• Language: English
• Published: Amsterdam Elsevier B.V 01.06.1998; Elsevier
• Subjects: Condensed matter: structure, mechanical and thermal properties; Disordered solids; Exact sciences and technology; Glasses; Physics; Structure of solids and liquids; crystallography; P150; C275; C190; S440; Zinc Polyphosphates; Inorganic compounds; Zinc phosphates; Ternary compounds; Liquid chromatography; Phosphate glass; Experimental study; Polyphosphates; Ion distribution; Amorphous state structure
• ISSN: 0022-3093; 1873-4812
• DOI: 10.1016/S0022-3093(98)00415-3

The technique of high-performance liquid chromatography (HPLC) has been used to determine the distributions of phosphate-anion chains and rings in a variety of zinc-phosphate-based glasses. The phosphate-anion distributions in simple binary zinc phosphate glasses are compared to those found in multi-cation alkali-zinc phosphate glasses. Multi-cation zinc phosphate glasses are chemically durable and can be tailored to exhibit transition temperatures sufficiently low for co-processing with a variety of plastics to form novel organic–inorganic composite materials. The intermediate range order in the multi-cation glasses is found to be similar to that measured in the binary zinc-phosphate glasses. Scanning calorimetry measurements indicate, however, that the multi-cation glasses are more resistant to crystallization than the binary glasses. The fraction of phosphorus sites with 2 ( Q 2), 1 ( Q 1) and 0 ( Q 0) bridging oxygen, as well as the ratio of bridging to non-bridging oxygen (BO/NBO), are obtained from the chromatograms. Structural data for the zinc phosphate glasses obtained using HPLC are compared to results reported in the literature that were deduced using more-traditional solid-state techniques such as NMR, XPS, and Raman spectroscopy.