Characterization of 20Na₂O·30((1−x)CaO·xSrO)·50P₂O₅ Glasses for a Resorbable Optical Fiber Application


Resorbable glasses with nominal molar compositions of 20Na2O·30[(1−x)CaO·xSrO]·50P2O5, where x = 0, 0.25, 0.50, 0.75, and 1, were prepared and characterized. With the replacement of CaO by SrO, the molar volume, refractive index, and coefficient of thermal expansion increased, and the glass transition temperature, crystallization temperature, and viscosity decreased. The replacement of CaO by SrO decreased the dissolution rate in 37°C water by nearly an order of magnitude. Resorbable glass fibers drawn from melts of the 20Na2O·30CaO·50P2O5 glass exhibited decreasing transmission of laser light (632 nm) in a predictable way as the fiber dissolved in a phosphate buffer solution. This demonstrated that these glasses could be used to produce resorbable fibers for temporary biosensing or therapeutic applications.


Electrical and Computer Engineering

Second Department

Materials Science and Engineering


This research would not have been possible without the assistance and hospitality of the Materials Processing Engineering Lab at Ehime University and the Project Planning Department team at Nippon Electric Glass Co., Ltd., in addition to the funding provided by the National Science Foundation Grant DMR-1207520 and support from the International Materials Institute for New Functionality in Glass at Lehigh University (NSF DMR-0844014).

Keywords and Phrases

Biocompatibility; optical < Properties; optical fibers < Glass Products; phosphate < Glass Forming Systems; Raman spectroscopy < Characterization; thermal < Properties

International Standard Serial Number (ISSN)

2041-1286; 2041-1294

Document Type

Article - Journal

Document Version


File Type





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Publication Date

01 Jul 2019