Ultra-high-molecular-weight polyethylene (UHMWPE) Nanocomposite for Self-sensing orthopedic implants

  • Methawee Choosri

Student thesis: Master's Thesis

Abstract

Diseases of human joint affect a large number of people, and the treatment of these conditions by joint replacement surgery is increasingly common, representing a $15 billion global market. However, failure of the surgery leading to revision procedures, are not uncommon. This poses a significant risk to patient health, and an enormous economic burden on the healthcare system. To improve long term outcomes we need to: (1) have better understanding of how various factors affect implant performance inside the body; (2) detect early signs of failure, and (3) develop improved implant materials. Currently, we also do not have a way of measuring device performance once it is implanted in the patient. Therefore, this study is focused on the development of self-sensing polymer-based nanocomposites. Carbon nanotubes and Graphene nanoplatelets were considered as nanofillers to improve the mechanical properties and enable in-vivo self-sensing. The piezo-resistive behavior observed indicates the nanocomposites potential for strain-sensing applications. With the reinforcement of only 0.1 wt% CNTs, percolation threshold is achieved in addition to maximizing mechanical properties.
Date of AwardMay 2017
Original languageAmerican English

Keywords

  • Ultra-high-Molecular-Weight Polyethylene (UHMWPE) Nanocomposite; Self-Sensing Orthopedic Implants; Carbon Nanotubes; Graphene Nanoplatelets; United Arab Emirates.

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