SM07.08.07 : Surface Modification of Polyurethane-Urea Elastomers with Colloidal Gold Nanoparticles

5:00 PM–7:00 PM Apr 5, 2018 (America - Denver)

PCC North, 300 Level, Exhibit Hall C-E

Kyle Aidukas1 David Bilger1 Shanju Zhang1

1, California Polytechnic State University, San Luis Obispo, California, United States

Multifunctional polymer composites that include biocompatible and biodegradable linkages are integral towards advancing biomedical technology. Often, functionality is achieved via surface modification of a polymer structure, commonly via reactions with functional groups present in the polymer. Gold has a known affinity for disulfide groups, as well as beneficial bio-interactions that lead it to be a highly studied nanoparticle. In loading over the percolation threshold, these nanoparticles are able to conduct electricity. Here, click chemistry was used to attach gold nanoparticles to a disulfide containing polyurethane-urea elastomer. Gold nanoparticles were created using the Turkevich method and the particle size was determined. The effect of the hard segment chain length was examined using thermal, optical and mechanical methods and polymer solubility was tested. Optical methods were used to characterize the morphology of the coated polymer. Electrical properties of the coated polymer were tested under various strain conditions.