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

• Autorzy: Ifty Ahmed , S. S. Shaharuddin , N. Sharmin , D. Furniss , C. Rudd
• Języki publikacji: EN

Abstrakty

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.

Słowa kluczowe

EN

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

• Czasopismo: Biomedical glasses
• Rocznik: 2015
• Tom: 1
• Numer: 1

Daty

otrzymano

2015-04-30

zaakceptowano

2015-05-16

online

2015-07-20

Twórcy

autor

Ifty Ahmed

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

autor

S. S. Shaharuddin

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

autor

N. Sharmin

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

autor

D. Furniss

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

autor

C. Rudd

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

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Identyfikatory

DOI

10.1515/bglass-2015-0004