Prestress in Composite Polymer Gels as a Model for Articular Cartilage

Published

November 2, 2022

Author(s)

Alexandros Chremos, Jack F. Douglas, Peter Basser, Ferenc Horkay

Abstract

Articular cartilage is a composite gel-like material found in animal and human joints and exhibits a unique load-bearing performance that has been challenging to reproduce in synthetic materials and in molecular dynamics simulations. We investigate a composite hydrogel that mimics functional properties of articular cartilage as a framework to investigate the load-bearing properties of these materials. Specifically, we find that the emergence of pre-stress in composite gels derives primarily from the stiffness of the polymer matrix and the asymmetry in the enthalpic interactions of the embedded particles and polymer matrix. Our simulations of the prestress agree qualitatively with osmotic pressure measurements on our model composite hydrogel material.

Citation

Gels-

Issue

11

Pub Type

Journals

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Keywords

composite gel, prestress, osmotic pressure, cartilage, hydrogel, molecular dynamics

Citation

Chremos, A. , Douglas, J. , Basser, P. and Horkay, F. (2022), Prestress in Composite Polymer Gels as a Model for Articular Cartilage, Gels-, [online], https://tsapps.nist.gov/publication/get_pdf.cfm?pub_id=935027 (Accessed February 15, 2025)