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Effect of boron oxide addition on fibre drawing, mechanical properties and dissolution behaviour of phosphate-based glass fibres with fixed 40, 45 and 50 mol% P2O5.

Sharmin N, Parsons AJ, Rudd CD, Ahmed I - J Biomater Appl (2014)

Bottom Line: The mechanical properties of the fibres were found to significantly increase with increasing B2O3 content.Initial loss of mechanical properties due to annealing was found to be recovered with degradation.Both annealed and non-annealed fibres exhibited a peeling effect of the fibre's outer layer during degradation.

View Article: PubMed Central - PubMed

Affiliation: Division of Materials, Mechanics and Structures, University of Nottingham, Nottingham, UK.

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Related in: MedlinePlus

Tensile strength and modulus of the non-annealed fibres in the glass system P40Ca16Mg24Na(20 − X)Bx P45Ca16Mg24Na(15 − X)Bx and P50Ca16Mg24Na(10 − X)Bx (where x = 0, 5 and 10 mol%). Error bars represent the standard deviation where n = 20.
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fig1-0885328214539824: Tensile strength and modulus of the non-annealed fibres in the glass system P40Ca16Mg24Na(20 − X)Bx P45Ca16Mg24Na(15 − X)Bx and P50Ca16Mg24Na(10 − X)Bx (where x = 0, 5 and 10 mol%). Error bars represent the standard deviation where n = 20.

Mentions: Figure 1 shows the effect of increasing P2O5 and B2O3 on the mechanical properties (tensile strength and modulus) of the fibres. An increase in tensile strength was seen with an increase in B2O3 content. The tensile strength of P40B0, P45B0 and P50B0 was 450 ± 76, 530 ± 67 and 649 ± 65 MPa, while the tensile strength increased to 777 ± 95, 1050 ± 141 and 983 ± 143 MPa for P40B5, P45B5 and P50B5 glass formulations, respectively. The tensile strength of P50B10 fibres is not reported as it was not possible to pull the fibres due to the high viscosity of the glass system. The highest tensile strength (1200 ± 146) MPa was observed for the P45B10 fibres. An increase in tensile strength from 450 ± 56 MPa to 649 ± 65 MPa of the P2O5-CaO-MgO-Na2O glass system was also observed with increasing P2O5 from 40 to 50 mol%. Table 2 gives the Weibull distribution of the tensile strength of the fibres in P40, P45 and P50 glass systems, respectively. It was observed that the trend of normalising strength (σo) was consistent with the trend of average tensile strength. The Weibull modulus of these fibres was seen to range from 7.7 to 10.5.Figure 1.


Effect of boron oxide addition on fibre drawing, mechanical properties and dissolution behaviour of phosphate-based glass fibres with fixed 40, 45 and 50 mol% P2O5.

Sharmin N, Parsons AJ, Rudd CD, Ahmed I - J Biomater Appl (2014)

Tensile strength and modulus of the non-annealed fibres in the glass system P40Ca16Mg24Na(20 − X)Bx P45Ca16Mg24Na(15 − X)Bx and P50Ca16Mg24Na(10 − X)Bx (where x = 0, 5 and 10 mol%). Error bars represent the standard deviation where n = 20.
© Copyright Policy - open-access
Related In: Results  -  Collection

License 1 - License 2 - License 3
Show All Figures
getmorefigures.php?uid=PMC4230965&req=5

fig1-0885328214539824: Tensile strength and modulus of the non-annealed fibres in the glass system P40Ca16Mg24Na(20 − X)Bx P45Ca16Mg24Na(15 − X)Bx and P50Ca16Mg24Na(10 − X)Bx (where x = 0, 5 and 10 mol%). Error bars represent the standard deviation where n = 20.
Mentions: Figure 1 shows the effect of increasing P2O5 and B2O3 on the mechanical properties (tensile strength and modulus) of the fibres. An increase in tensile strength was seen with an increase in B2O3 content. The tensile strength of P40B0, P45B0 and P50B0 was 450 ± 76, 530 ± 67 and 649 ± 65 MPa, while the tensile strength increased to 777 ± 95, 1050 ± 141 and 983 ± 143 MPa for P40B5, P45B5 and P50B5 glass formulations, respectively. The tensile strength of P50B10 fibres is not reported as it was not possible to pull the fibres due to the high viscosity of the glass system. The highest tensile strength (1200 ± 146) MPa was observed for the P45B10 fibres. An increase in tensile strength from 450 ± 56 MPa to 649 ± 65 MPa of the P2O5-CaO-MgO-Na2O glass system was also observed with increasing P2O5 from 40 to 50 mol%. Table 2 gives the Weibull distribution of the tensile strength of the fibres in P40, P45 and P50 glass systems, respectively. It was observed that the trend of normalising strength (σo) was consistent with the trend of average tensile strength. The Weibull modulus of these fibres was seen to range from 7.7 to 10.5.Figure 1.

Bottom Line: The mechanical properties of the fibres were found to significantly increase with increasing B2O3 content.Initial loss of mechanical properties due to annealing was found to be recovered with degradation.Both annealed and non-annealed fibres exhibited a peeling effect of the fibre's outer layer during degradation.

View Article: PubMed Central - PubMed

Affiliation: Division of Materials, Mechanics and Structures, University of Nottingham, Nottingham, UK.

Show MeSH
Related in: MedlinePlus