2005 Program
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2005 Participant: Kayla McCray

Project Title:
Fabrication. Characterization, and Control of Polylactic co-glycolic
acid (PLAGA) Nanospheres for the purpose of Targeted Drug Delivery

Faculty Advisor: Ed Botchwey

 




The bluish opalescence of the solution indicates successful formation of nanospheres in the polymer, acetone, PVA solution.


In order to reduce the dimensions of the nanospheres, the solution is then passed through a sonicator.


Project Summary:

Nanospheres are hollow, colloidal, spherical particles whose diameter can be measured in nanometers. Because of their high permeability, they possess the ability to slide into individual cells undetected. This feature makes nanospheres ideal for targeted drug delivery, which can lead to innovative treatment and cures for otherwise untreatable diseases. This summer I will be attempting to form a protocol that my lab can utilize to successfully fabricate nanospheres well below the size of 500nm.

To achieve nanosphere fabrication, I will be using an emulsion solvent diffusion method. A solution of measured polymer and organic solvent is transferred into a known amount of stabilizer and emulsified using a sonicator with desired settings. A magnetic stirrer is used for the solvent evaporation process and the nanospheres are gathered by means of ultracentrifugation, followed by careful measurement of the isolated nanosphere dimensions. A Scanning Electron Microscope (SEM) is used to characterize the nanospheres.



After the nanospheres are fabricated and isolated, they are coated with gold in order to allow for better SEM-imaging in the study of their dimensions.





"Got It!"
The thrill of successful research.
Kayla proudly displays her isolated nanospheres.

 
 
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