Please use this identifier to cite or link to this item:
|Title:||Using oscillatory squeezing flow to measure the viscoelastic properties of dental composite resin cements during curing|
Dental resin cements
|Citation:||Jiang, P., See, H., Swain, M.V., Phan-Thien, N. (2003-01). Using oscillatory squeezing flow to measure the viscoelastic properties of dental composite resin cements during curing. Rheologica Acta 42 (1) : 118-122. ScholarBank@NUS Repository. https://doi.org/10.1007/s00397-002-0262-y|
|Abstract:||We have investigated the rheological changes in two particulate-filled dental composite resin cements during the curing process using a Micro-Fourier Rheometer (MFR). In the MFR, the sample was sandwiched between two parallel plates, and pseudorandom small amplitude squeezing was applied by oscillating the upper plate over a range of frequencies. Fourier transforms of the displacement signal and the resulting time dependent force signal enabled the rapid determination of the dynamic properties G′ and G″ over the frequency range 2π-200π rad/s. This technique permitted us to follow changes in the rheological properties of the resin cements through the setting period. A typical result was that G′ increased from 2×103 Pa to 2×105 Pa after about 120 s, and that G″ changed from 4×103 Pa to 4×104 Pa over the same period at frequency 40π rad/s. We also found that the dental composite resin cements show linear viscoelastic behaviour over a range of strain amplitudes before curing, but the response becomes distinctly non-linear at the later stages of curing for strain amplitudes γ > 0.067%.|
|Source Title:||Rheologica Acta|
|Appears in Collections:||Staff Publications|
Show full item record
Files in This Item:
There are no files associated with this item.
checked on May 19, 2018
WEB OF SCIENCETM
checked on Apr 3, 2018
checked on May 18, 2018
Items in DSpace are protected by copyright, with all rights reserved, unless otherwise indicated.