Loading...
Viscoelastic Properties of Collagen-Adhesive Composites under Water Saturated and Dry Conditions
Singh, Viraj Misra, Anil Parthasarathy, Ranganathan Ye, Qiang Spencer, Paulette
Singh, Viraj
Misra, Anil
Parthasarathy, Ranganathan
Ye, Qiang
Spencer, Paulette
Citations
Altmetric:
Abstract
To investigate the time and rate dependent mechanical properties of collagen-adhesive composites, creep and monotonic experiments are performed under dry and wet conditions. The composites are prepared by infiltration of dentin adhesive into a demineralized bovine dentin. Experimental results show that for small stress level under dry conditions, both the composite and neat adhesive have similar behavior. On the other hand, in wet conditions, the composites are significantly soft and weak compared to the neat adhesives. The behavior in the wet condition is found to be affected by the hydrophilicity of both the adhesive and collagen. Since the adhesive-collagen composites area part of the complex construct that forms the adhesive-dentin interface, their presence will affect the overall performance of the restoration. We find that Kelvin-Voigt model with at least 4-elements is required to fit the creep compliance data, indicating that the adhesive-collagen composites are complex polymers with several characteristics time-scales whose mechanical behavior will be significantly affected by loading rates and frequencies. Such mechanical properties have not been investigated widely for these types of materials. The derived model provides an additional advantage that it can be exploited to extract other viscoelastic properties which are, generally, time consuming to obtain experimentally. The calibrated model is utilized to obtain stress relaxation function, frequency-dependent storage and loss modulus, and rate dependent elastic modulus.
Description
This is the peer reviewed version of the following article: Singh V, Misra A, Parthasarathy R, Ye Q, Spencer P. 2015. Viscoelastic properties of collagen–adhesive composites under water-saturated and dry conditions. J Biomed Mater Res Part A 2015:103A:646–657. , which has been published in final form at http://doi.org/10.1002/jbm.a.35204. This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Self-Archiving.
Date
2015-02
Journal Title
Journal ISSN
Volume Title
Publisher
Wiley
Collections
Research Projects
Organizational Units
Journal Issue
Keywords
Collagen-adhesive composite, Dentin adhesive, Demineralized dentin, Creep, Viscoelastic, Dry and wet, Generalized Kelvin-Voigt model
Citation
Singh V, Misra A, Parthasarathy R, Ye Q, Spencer P. 2015. Viscoelastic properties of collagen–adhesive composites under water-saturated and dry conditions. J Biomed Mater Res Part A 2015:103A:646–657.