Synthesis, Characterization, and Swelling/Contraction Behavior of PNIPAm and PMAA Polymer Brushes Grafted On Gold Substrates

Monday, November 8, 2010
Hall 1 (Salt Palace Convention Center)
Erick S. Vasquez1, Marquita Y. Jones1 and Keisha B. Walters2, (1)Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, MS, (2)Dave C. Swalm School of Chemical Engineering, Mississippi State University, Mississippi State, MS

In this work, the synthesis of PNIPAM, PMAA, and PNIPAM-PMAA copolymer brushes was carried out using surface-initiated atom transfer radical polymerization (ATRP). To facilitate polymerization from gold substrates, a thiol self-assembled monolayer was first deposited and then a bromine-based initiator was attached. The grafted polymer brushes were characterized using contact angle measurements, ellipsometry, and external reflectance Fourier transform infrared spectroscopy (ER-FTIR). Additionally, we investigated the pH and temperature responses of PNIPAM, PMAA, and the PNIPAM-PMAA copolymer using in situ, real-time ellipsometry measurements.

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See more of this Session: Poster Session: Interfacial Phenomena
See more of this Group/Topical: Engineering Sciences and Fundamentals