Frequency dependence of viscoelastic properties of medical grade silicones

Aziza Mahomed; NM Chidi; David Hukins; Stephen Kukureka; Duncan Shepherd

doi:10.1002/jbm.b.31208

Frequency dependence of viscoelastic properties of medical grade silicones

Aziza Mahomed, NM Chidi, David Hukins, Stephen Kukureka, Duncan Shepherd

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15 Citations (Scopus)

Abstract

Cylinders of medical grade silicone elastomers, (29 mm in diameter and 13 mm thick), immersed in physiological saline solution at 37 degrees C, were investigated by dynamic mechanical analysis (DMA). A sinusoidal cyclic compression of 40 +/- 5 N was applied over a frequency range, f, of 0.02-100 Hz. Values of the storage, E', and loss, E", moduli for the cylinders were found to depend on f; the dependence of E' or E" on the logarithm (base 10) off was represented by a third-order polynomial. Above about 0.3 Hz, the cylindrical specimens appeared to be undergoing the onset of a transition from the rubbery to the glassy state. There was no significant difference between results obtained at 37 and 23 degrees C; pretreatment of specimens in physiological saline at 37 degrees C for 24 h and 29 days had no appreciable effect on the results. (C) 2008 Wiley Periodicals. Inc. J Biomed Mater Res Part B: Appl Biomater 89B: 210-216, 2009

Original language	English
Pages (from-to)	210-216
Number of pages	7
Journal	Journal of Biomedical Materials Research Part B Applied Biomaterials
Volume	89B
Issue number	1
DOIs	https://doi.org/10.1002/jbm.b.31208
Publication status	Published - 1 Apr 2009

Keywords

joint replacement
silicone
mechanical properties
compression
viscoelastic

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10.1002/jbm.b.31208

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title = "Frequency dependence of viscoelastic properties of medical grade silicones",

abstract = "Cylinders of medical grade silicone elastomers, (29 mm in diameter and 13 mm thick), immersed in physiological saline solution at 37 degrees C, were investigated by dynamic mechanical analysis (DMA). A sinusoidal cyclic compression of 40 +/- 5 N was applied over a frequency range, f, of 0.02-100 Hz. Values of the storage, E', and loss, E{"}, moduli for the cylinders were found to depend on f; the dependence of E' or E{"} on the logarithm (base 10) off was represented by a third-order polynomial. Above about 0.3 Hz, the cylindrical specimens appeared to be undergoing the onset of a transition from the rubbery to the glassy state. There was no significant difference between results obtained at 37 and 23 degrees C; pretreatment of specimens in physiological saline at 37 degrees C for 24 h and 29 days had no appreciable effect on the results. (C) 2008 Wiley Periodicals. Inc. J Biomed Mater Res Part B: Appl Biomater 89B: 210-216, 2009",

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author = "Aziza Mahomed and NM Chidi and David Hukins and Stephen Kukureka and Duncan Shepherd",

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T1 - Frequency dependence of viscoelastic properties of medical grade silicones

AU - Mahomed, Aziza

AU - Chidi, NM

AU - Hukins, David

AU - Kukureka, Stephen

AU - Shepherd, Duncan

PY - 2009/4/1

Y1 - 2009/4/1

N2 - Cylinders of medical grade silicone elastomers, (29 mm in diameter and 13 mm thick), immersed in physiological saline solution at 37 degrees C, were investigated by dynamic mechanical analysis (DMA). A sinusoidal cyclic compression of 40 +/- 5 N was applied over a frequency range, f, of 0.02-100 Hz. Values of the storage, E', and loss, E", moduli for the cylinders were found to depend on f; the dependence of E' or E" on the logarithm (base 10) off was represented by a third-order polynomial. Above about 0.3 Hz, the cylindrical specimens appeared to be undergoing the onset of a transition from the rubbery to the glassy state. There was no significant difference between results obtained at 37 and 23 degrees C; pretreatment of specimens in physiological saline at 37 degrees C for 24 h and 29 days had no appreciable effect on the results. (C) 2008 Wiley Periodicals. Inc. J Biomed Mater Res Part B: Appl Biomater 89B: 210-216, 2009

AB - Cylinders of medical grade silicone elastomers, (29 mm in diameter and 13 mm thick), immersed in physiological saline solution at 37 degrees C, were investigated by dynamic mechanical analysis (DMA). A sinusoidal cyclic compression of 40 +/- 5 N was applied over a frequency range, f, of 0.02-100 Hz. Values of the storage, E', and loss, E", moduli for the cylinders were found to depend on f; the dependence of E' or E" on the logarithm (base 10) off was represented by a third-order polynomial. Above about 0.3 Hz, the cylindrical specimens appeared to be undergoing the onset of a transition from the rubbery to the glassy state. There was no significant difference between results obtained at 37 and 23 degrees C; pretreatment of specimens in physiological saline at 37 degrees C for 24 h and 29 days had no appreciable effect on the results. (C) 2008 Wiley Periodicals. Inc. J Biomed Mater Res Part B: Appl Biomater 89B: 210-216, 2009

KW - joint replacement

KW - silicone

KW - mechanical properties

KW - compression

KW - viscoelastic

U2 - 10.1002/jbm.b.31208

DO - 10.1002/jbm.b.31208

M3 - Article

C2 - 18823017

SN - 1552-4981

VL - 89B

SP - 210

EP - 216

JO - Journal of Biomedical Materials Research Part B Applied Biomaterials

JF - Journal of Biomedical Materials Research Part B Applied Biomaterials

IS - 1

ER -

Frequency dependence of viscoelastic properties of medical grade silicones

Abstract

Keywords

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