CHED 809 |
| Surface modification enables control of interface properties. Our work investigates surface modification using thermoresponsive polymers to alter the properties of gold surfaces. N-isopropylacrylamide (NIPAm) and various amounts of N,N′-cystaminebisacrylamide (CBAm) are co-polymerized to produce thermoresponsive polymers (p(NIPAm-co-CBAm)) containing thiol groups. The properties of the polymers were characterized using light scattering, and FT-IR and UV-Vis spectroscopies. Clean gold substrates were soaked in p(NIPAm-co-CBAm) solutions, enabling adsorption of the polymer onto the substrate. The temperature-dependent wettability of the polymer-coated surfaces was evaluated using contact angle goniometry. A quartz crystal microbalance with dissipation (QCM-D) was used to monitor polymer adsorption and thermoresponsive behavior. Data from these experiments reveal trends in the physical properties of gold surfaces modified with polymers possessing various amounts of CBAm. |
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Undergraduate Research Poster Session: Polymer Chemistry
11:00 AM-1:00 PM, Monday, March 26, 2007 Hyatt Regency Chicago -- Riverside Center, Poster
Division of Chemical Education |