Date of Award


Degree Type


Degree Name

Master of Engineering Science


Biomedical Engineering


Dr. Elizabeth R. Gillies


Poly(ester amide)s (PEA)s offer several properties superior to currently used systems such as fewer acidic degradation products and functional handles for the conjugation of bioactive molecules. Herein, two novel PEA based drug delivery systems were developed and evaluated. The first utilizes PEAs containing pendant carboxylic acid functional groups and was evaluated with respect to its ability to control the release of a model drug, a Rhodamine B derivative. The drug exhibited sustained release without a burst phase, demonstrating the utility of the carboxylic functional handles. A second drug delivery system was prepared utilizing novel polyethylene oxide)-PEA copolymers which formed into micelles. The resulting system was capable of encapsulating and releasing Nile Red, a model hydrophobic drug, on a pharmacologically relevant time scale. Overall, these results suggest that PEAs are excellent biomaterials, capable of delivering therapeutics and have the potential to overcome many of the deficiencies found in current delivery systems.



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