Published on Wednesday August 9, 2006
MSE undergraduate Ari Sagiv (advisor: Jonathan Spanier) participated in an internship program for deaf students at Tufts University this summer sponsored by the National Science Foundation.
As part of his research experience, he helped to mix different quantities of clay with a fixed amount of Polyvinylidenefluoride (Polyvinyldifluoride or PVDF) and evaporated them to get a film. Sagiv and the research group then melted and pressed them to get a film. They tried different heat treatments to see if they could obtain the beta and gamma phases of PVDF. The samples were then tested by exposure to electromagnetic energy with the X-ray and Fourier Transform Infrared Spectroscopy, heated with the Differential Scanning Calorimeter, and the growth of spherulites was observed with a Polarized Optical Microscope.
Sagiv specialized in de-convoluting the peaks in X-Ray Scattering. Each peak designates one or more phases. The larger the peak, the greater amount of that phase was present. There were different results for different compositions, as expected. The conclusion the group reached is that an increased amount of clay insertion yields beta and gamma phases.
For more information on the Tufts Research Opportunity for Deaf and Hard of Hearing Students, please visit: http://www.tufts.edu/~pcebe/internships.html