Core/Clad Phosphate Glass Fibres Containing Iron
and/or Titanium

• Authors: Ifty Ahmed , S. S. Shaharuddin , N. Sharmin , D. Furniss , C. Rudd
• Languages of publication: EN

Abstracts

EN

Phosphate glasses are novel amorphous biomaterials
due to their fully resorbable characteristics, with
controllable degradation profiles. In this study, phosphate
glasses containing titanium and/or iron were identified
to exhibit sufficiently matched thermal properties (glass
transition temperature, thermal expansion coefficient and
viscosity) which enabled successful co-extrusion of glass
billets to form a core/clad preform. The cladding composition
for the core/clad preforms were also reversed. Fe clad
and Ti clad fibres were successfully drawn with an average
diameter of between 30~50 μm. The average cladding
annular thickness was estimated to be less than 2 μm. Annealed
core/clad fibres were degraded in PBS for a period
of 27 days. The strength of the Fe clad fibres appeared to
increase from 303 ± 73 MPa to 386 ± 45 MPa after nearly
2 weeks in the dissolution medium (phosphate buffered
solution) before decreasing by day 27. The strength of the
Ti clad fibres revealed an increase from 236 ± 53 MPa to
295 ± 61 MPa when compared at week 3. The tensile modulus
measured for both core/clad fibres ranged between
51 GPa to 60 GPa. During the dissolution study, Fe clad fibres
showed a peeling mechanism compared to the Ti clad
fibres.

Keywords

EN

core/clad phosphate glass fibres; mechanicalproperties; degradation; thermal properties

• Publisher: De Gruyter Open
• Journal: Biomedical glasses
• Year: 2015
• Volume: 1
• Issue: 1

Dates

accepted

16 - 5 - 2015

online

20 - 7 - 2015

received

30 - 4 - 2015

Contributors

author

Ifty Ahmed

• Faculty of Engineering, Division of Materials, Mechanics
  and Structures, University of Nottingham, NG7 2RD

author

S. S. Shaharuddin

• Department of Manufacturing and Materials Engineering,
  Kuliyyah of Engineering, International Islamic University
  Malaysia, Malaysia

author

N. Sharmin

• Faculty of Engineering, Division of Materials, Mechanics
  and Structures, University of Nottingham, NG7 2RD

author

D. Furniss

• Faculty of Engineering, Division of Materials, Mechanics
  and Structures, University of Nottingham, NG7 2RD

author

C. Rudd

• Faculty of Engineering, Division of Materials, Mechanics
  and Structures, University of Nottingham, NG7 2RD

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Identifiers

DOI

10.1515/bglass-2015-0004