Publication Date


Document Type


Committee Members

William Feld (Committee Member), Eric Fossum (Committee Chair), Kenneth Turnbull (Committee Member)

Degree Name

Master of Science (MS)


This work encompassed synthesis and characterization of biocompatible hyperbranched polyester drug delivery systems prepared with fumaric acid, glycerol and polyethylene glycol. The polymers were manufactured in the melt utilizing A2 + CB2 polymerization. The ratio of A2:CB2 was modified and excess B was added to end-cap the polymers to avoid cross-linking. Fumaric acid was selected as the A2 monomer because the double bond provided a site for polymer backbone modification or covalent attachment of active pharmaceutical ingredients. Acetaminophen and Ondansetron Hydrochloride were added to evaluate feasibility of using the polyesters as drug delivery systems. The weight average molecular weight of the A2 + CB2 polymer systems with the end-capping agent ranged from 5100 to 8500 Da with PDI values between 1.3 and 1.7. The polymers containing Acetaminophen appeared to degrade while the polymers with Ondansetron were determined to be immediate-release dosage forms.

Page Count


Department or Program

Department of Chemistry

Year Degree Awarded


Included in

Chemistry Commons