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Polymers 2011, 3(1), 405-412; doi:10.3390/polym3010405

A Pendulum-Like Motion of Nanofiber Gel Actuator Synchronized with External Periodic pH Oscillation

1,* , 2,* , 1
1 Department of Applied Physics, Graduate School of Science and Engineering, Waseda University, 3-4-1 Okubo Shinjuku-ku, Tokyo 169-8555, Japan 2 Nanosystem Research Institute (NRI), National Institute of Advanced Science and Technology (AIST), Central 5-2, 1-1-1 Higashi, Tsukuba 305-8565, Japan
* Authors to whom correspondence should be addressed.
Received: 20 December 2010 / Accepted: 6 February 2011 / Published: 8 February 2011
(This article belongs to the Special Issue Biofunctional Polymers for Medical Applications)
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In this study, we succeeded in manufacturing a novel nanofiber hydrogel actuator that caused a bending and stretching motion synchronized with external pH oscillation, based on a bromate/sulfite/ferrocyanide reaction. The novel nanofiber gel actuator was composed of electrospun nanofibers synthesized by copolymerizing acrylic acid and hydrophobic butyl methacrylate as a solubility control site. By changing the electrospinning flow rate, the nanofiber gel actuator introduced an anisotropic internal structure into the gel. Therefore, the unsymmetrical motion of the nanofiber actuator was generated.
Keywords: nanofiber; electrospinning; actuator; gel; polymer nanofiber; electrospinning; actuator; gel; polymer
This is an open access article distributed under the Creative Commons Attribution License (CC BY 3.0).

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Nakagawa, H.; Hara, Y.; Maeda, S.; Hasimoto, S. A Pendulum-Like Motion of Nanofiber Gel Actuator Synchronized with External Periodic pH Oscillation. Polymers 2011, 3, 405-412.

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