Electronic Theses and Dissertations

Identifier

6050

Date

2017

Date of Award

11-16-2017

Document Type

Thesis

Degree Name

Master of Science

Major

Mechanical Engineering

Concentration

Materials Science

Committee Chair

Gladius Lewis

Committee Member

Ebrahim Asadi

Committee Member

Steven Wayne

Abstract

It has been postulated that the high temperature reached during the polymerization of acrylic bone (for some brands, as high as 85 oC) (Tmax) may cause thermal necrosis of tissues close to the implant. In the present work, two methods to reducing Tmax were studied: change to the composition of the cement powder (by addition of 5-25 wt./wt.% microencapsulated phase change material) and a change to the composition of the cement liquid (by addition of a 1-3 vol./vol.% chain-stopping agent, namely, dodecyl mercaptan). The control cement was a commercially-available gentamicin-loaded brand. All cements were vacuum mixed. Eight other clinically-relevant properties of the cement were determined and compared to those of the control cement. While each method led to significant decreases in Tmax, the effect on the other cement properties varied to different degrees. Overall, the cements containing 2 vol./vol.% DDM and 3 vol./vol.% DDM may have the greatest potential to being viable alternatives to the control cement.

Comments

Data is provided by the student.

Library Comment

dissertation or thesis originally submitted to the local University of Memphis Electronic Theses & dissertation (ETD) Repository.

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