A Linear Actuation of Polymeric Nanofibrous Bundle for Artificial Muscles
- Authors
- Gu, Bon Kang; Ismail, Yahya A.; Spinks, Geoffrey A.; Kim, Sun I.; So, Insuk; Kim, Seon Jeong
- Issue Date
- Feb-2009
- Publisher
- AMER CHEMICAL SOC
- Citation
- CHEMISTRY OF MATERIALS, v.21, no.3, pp.511 - 515
- Indexed
- SCIE
SCOPUS
- Journal Title
- CHEMISTRY OF MATERIALS
- Volume
- 21
- Number
- 3
- Start Page
- 511
- End Page
- 515
- URI
- https://scholarworks.bwise.kr/hanyang/handle/2021.sw.hanyang/177328
- DOI
- 10.1021/cm802377d
- ISSN
- 0897-4756
- Abstract
- Artificial muscle fiber mimicking myofibril is fabricated using electrospun nanofibers of high strength polyurethane followed by controlled in situ chemical polymerization with aniline. The resulting polyurethane(PU)/polyaniline(PANi) hybrid nanofibrous bundle consisting individual nanofibers of about 900 nm diameter responds to an electrical stimuli producing a linear actuation strain as high as 1.65% at an applied stress of 1.03 MPa in 1 M methane sulfonic acid (MSA), the highest strain produced in the nanofibers templated PANi. The hybrid nanofibrous bundle shows an electrical conductivity of about 0.5 S/cm and the electroactivity is imparted by PANi. The biomimetic artificial nanofibrous bundle shows work per cycle (W.C.) efficiency of above 75% for the electrochemical actuation even beyond 100 cycles. The PU/PANi hybrid nanofibrous bundle could be stably actuated without significant creep up to an applied load of 11 mN (2.263 Mpa) beyond which significant creep behavior appears.
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