THE RADIATION GRAFTED ETHYLENE-TETRAFLUOROETHYLE-g-POLYSTYRENE SULFONATE (ETFE-g-PSSA) BASED IONIC POLYMER METAL COMPOSITES (IPMCs) AND A STATE OF UNDERSTANDING FOR THE NOVEL WORKING MECHANISM
Bahar Burcu Karahan
Material Science & Engineering, M.Sc. Thesis, 2012
Assoc. Prof. Melih Papila (Thesis Supervisor), Assoc. Prof. Selmiye Alkan Gürsel (Thesis Co-Supervisor), Prof. Dr. Yusuf Menceloğlu, Assoc. Prof. Mehmet Ali Gülgün, Assoc. Prof. Ali Koşar
Date &Time: August 7th, 2012 – 15:00
Place: FENS G035
Keywords: Ionic polymer metal composite, radiation grafting, eyhylene-tetrafluoroethylene-g- polystyrene sulfonate (ETFE-g-PSSA), Nafion ®, actuation
Ionic polymer-metal composites (IPMCs), one of the electroactive polymers, have revealed remarkable properties with its large bending behavior and force response under applied low voltages. Nafion® has been used for the manufacturing IPMCs due to its high ionic conductivity and mechanical strength. However, high cost and limited thickness availability of Nafion® diminishes its demand. As a promising alternative to the Nafion® based IPMCs, radiation grafted eyhylene-tetrafluoroethylene-g- polystyrene sulfonate (ETFE-g-PSSA) membrane based IPMCs have been produced successfully. The superior actuation performance with the higher displacement capabilities has been achieved.
The second aim of the study had been enhancing the performance of (ETFE-g-PSSA) based IPMCs. However, novel characteristics of the (ETFE-g-PSSA) based IPMCs , compared with Nafion®-type IPMCs, has led the direction of study proposing a working mechanism for the (ETFE-g-PSSA) based IPMCs in its most primitive state.