A Linear Actuation of Polymeric Nanofibrous Bundle for Artificial Muscles

被引：78

作者：

Gu, Bon Kang ^{[1
]}

Ismail, Yahya A. ^{[1
]}

Spinks, Geoffrey A. ^{[2
]}

Kim, Sun I. ^{[1
]}

So, Insuk ^{[3
]}

Kim, Seon Jeong ^{[1
]}

机构：

[1] Hanyang Univ, Creat Res Ctr Bioartificial Muscle, Dept Biomed Engn, Seoul 133791, South Korea

[2] Univ Wollongong, Intelligent Polymer Res Inst, Wollongong, NSW, Australia

[3] Seoul Natl Univ, Dept Physiol, Seoul, South Korea

来源：

CHEMISTRY OF MATERIALS | 2009年 / 21卷 / 03期

关键词：

POLYANILINE ACTUATORS; FIBERS; CARBON; PANI(AMPS);

D O I：

10.1021/cm802377d

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

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.

引用

页码：511 / 515

页数：5

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