Electronic Theses and Dissertations

Identifier

6129

Date

2018

Document Type

Thesis

Degree Name

Master of Science

Major

Mechanical Engineering

Committee Chair

Ranganathan Gopalakrishnan

Committee Member

Ebrahim Asadi

Committee Member

Gladius Lewis

Abstract

Incorporation of coating to enhance the bioactivity, anti-microbial and drug delivery capability of implant has been the interest of researchers. Chitosan is a biopolymer that exhibits these properties. In this study, electrospray method was used to coat 2D titanium substrate and titanium screw with chitosan. The focus was to compare the bond strength between the coatings produced using electrospray and solution casting method. The effect of silane-based treatment to chemically bond chitosan to the surface of titanium for better bonding was evaluated. The bond strength of the 2D coatings was evaluated using tensile and shear tests. The coating retention on screw was evaluated using functional bone simulation test. Tensile test shows higher tensile bond strength from electrospray coating compared to solution cast coating. No significant strength difference was observed between silane-based treated and non-treated coatings. Functional bone simulation test shows average of 12% loss in coating mass on the screw.

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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