Core/clad phosphate glass fibres containing iron and/or titanium

Ahmed, Ifty and Shaharuddin, Sharifah Imihezri and Sharmin, N. and Furniss, D. and Rudd, C. (2015) Core/clad phosphate glass fibres containing iron and/or titanium. Biomed. Glasses, 1 (1). pp. 20-30. ISSN 2299-3932

PDF (Core clad phosphate based glasses) - Published Version Restricted to Repository staff only Download (1MB) | Request a copy

Abstract

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.

Item Type:	Article (Journal)
Additional Information:	4586/48457
Uncontrolled Keywords:	core/clad phosphate glass fibres, mechanical properties, degradation, thermal properties
Subjects:	T Technology > TA Engineering (General). Civil engineering (General) > TA164 Bioengineering T Technology > TP Chemical technology > TP785 Clay industries. Ceramics. Glass. Cement industries
Kulliyyahs/Centres/Divisions/Institutes (Can select more than one option. Press CONTROL button):	Kulliyyah of Engineering > Department of Manufacturing and Materials Engineering
Depositing User:	Internatio Sharifah Imihezri Syed
Date Deposited:	19 Jan 2016 11:47
Last Modified:	19 Jan 2016 11:47
URI:	http://irep.iium.edu.my/id/eprint/48457

Actions (login required)

View Item