Synthesis, functionalization, and polymerization of zirconium tungstate nanoparticles

Anna Connelly & Parker Lacefield

Zirconium tungstate nanoparticles (NPs) were synthesized and cured in the substrate of an epoxy telescope mirror in order to reduce the overall coefficient of thermal expansion (CTE) of the epoxy sample. NPs were synthesized using the sol-gel method, and then surface ligands were exchanged with amine and epoxy containing silane ligands before polymerization. The particles were characterized using thermogravimetric analysis, x-ray diffraction, and transmission electron microscopy. The epoxy samples were characterized for coefficient of thermal expansion and modulus using a thermomechanical analyzer. The results are expected to show that the addition of the particles lowers the overall CTE of the epoxy sample.

• Anna Connelly graduated from Saluda High School in Saluda, SC. She is a graduating senior chemistry major. Her experience includes multiple research projects as well as working on campus to set up underclassmen chemistry labs. She is also an active member of the Lander University Jazz Ensemble.

• Parker Lacefield is a senior chemistry major from Saint Stephen, SC. Their interests lie in materials science and synthesis. They hope to pursue a future in research and teaching after attending graduate school.