Article Details

Printable Polymer Actuators from Ionic Liquid, Soluble Polyimide, and Ubiquitous Carbon Materials

Oleh   Satoru Imaizumi [-]
Kontributor / Dosen Pembimbing : Yuto Ohtsuki, Tomohiro Yasuda, Hisashi Kokubo, Masayoshi Watanabe
Jenis Koleksi : Jurnal elektronik
Penerbit : FMIPA - Kimia
Fakultas : Fakultas Matematika dan Ilmu Pengetahuan Alam (FMIPA)
Subjek : Chemistry
Kata Kunci : polymer actuator, ionic liquid, sulfonated polyimide, polymer electrolyte, electric double layer capacitor
Sumber : | ACS Appl. Mater. Interfaces 2013, 5, 6307?6315
Staf Input/Edit : Latifa Noor   Ena Sukmana
File : 1 file
Tanggal Input : 2019-06-21 14:02:20

We present here printable high-performance polymer actuators comprising ionic liquid (IL), soluble polyimide, and ubiquitous carbon materials. Polymer electrolytes with high ionic conductivity and reliable mechanical strength are required for high-performance polymer actuators. The developed polymer electrolytes comprised a soluble sulfonated polyimide (SPI) and IL, 1-ethyl-3-methylimidazolium bis(trifluoromethanesulfonyl)amide ([C2mim][NTf2]), and they exhibited acceptable ionic conductivity up to 1 × 10?3 S cm?1 and favorable mechanical properties (elastic modulus >1 × 107 Pa). Polymer actuators based on SPI/ [C2mim][NTf2] electrolytes were prepared using inexpensive activated carbon (AC) together with highly electronconducting carbon such as acetylene black (AB), vapor grown carbon fiber (VGCF), and Ketjen black (KB). The resulting polymer actuators have a trilaminar electric double-layer capacitor structure, consisting of a polymer electrolyte layer sandwiched between carbon electrode layers. Displacement, response speed, and durability of the actuators depended on the combination of carbons. Especially the actuators with mixed AC/KB carbon electrodes exhibited relatively large displacement and high-speed response, and they kept 80% of the initial displacement even after more than 5000 cycles. The generated force of the actuators correlated with the elastic modulus of SPI/[C2mim][NTf2] electrolytes. The displacement of the actuators was proportional to the accumulated electric charge in the electrodes, regardless of carbon materials, and agreed well with the previously proposed displacement model.