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    Viscoelastic Properties of Collagen-Adhesive Composites under Water Saturated and Dry Conditions

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    Singh_2015.pdf (2.796Mb)
    Issue Date
    2015-02
    Author
    Singh, Viraj
    Misra, Anil
    Parthasarathy, Ranganathan
    Ye, Qiang
    Spencer, Paulette
    Publisher
    Wiley
    Type
    Article
    Article Version
    Scholarly/refereed, author accepted manuscript
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    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.
    URI
    http://hdl.handle.net/1808/24237
    DOI
    https://doi.org/10.1002/jbm.a.35204
    Collections
    • Mechanical Engineering Scholarly Works [135]
    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.

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    KU Libraries
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    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
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    Contact KU ScholarWorks
    785-864-8983
    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    785-864-8983

    KU Libraries
    1425 Jayhawk Blvd
    Lawrence, KS 66045
    Image Credits
     

     

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