|About this Abstract
||Materials Science & Technology 2012
||Bioinspired Materials Engineering
||Swelling Behaviour of Electrochemically Switched Polypyrrole Nanocomposites
||Aysegul Aygun, Larry D Stephenson , Joseph W Buthker, Thomas K Mahle, Andrew A Gewirth
|On-Site Speaker (Planned)
The main goal of this research is to investigate the swelling capabilities of nanocomposites based on the response of sea cucumber Cucumaria frondosa dermis to external stimuli. Electrochemically controlled swelling properties of polypyrrole are investigated by comparing the performance of layer by layer (LBL) grown and nanoporous templated (NT) systems. The swelling behavior of the NT system is found to be nearly twice as large as that from the LBL system. Reversible swelling of about 20% in 120 seconds on the first cycle was measured via electrochemical quartz crystal microbalance. The changes in the morphology and roughness that occur with swelling and shrinking were measured by using in-situ electrochemical atomic force microscopy. The understanding of the changes occurring due to molecular and nanostructural re-configuration in response to electrochemical stimuli may lead to potential applications in the development of a new generation of smart materials, in particular, more effective switchable materials.
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