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Characterization of the Blocking Force Generated by Buckypaper Composite Actuators

Title: Characterization of the Blocking Force Generated by Buckypaper Composite Actuators.
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Name(s): Labrador, Daniel, author
Liang, Richard, professor directing thesis
Zhang, Chuck, committee member
Oates, William, committee member
Department of Industrial and Manufacturing Engineering, degree granting department
Florida State University, degree granting institution
Type of Resource: text
Genre: Text
Issuance: monographic
Date Issued: 2010
Publisher: Florida State University
Place of Publication: Tallahassee, Florida
Physical Form: computer
online resource
Extent: 1 online resource
Language(s): English
Abstract/Description: Lightweight composite actuators with large bending displacement and high blocking force have great potentials for various engineering applications. Carbon nanotube thin film or Buckypaper-based composite actuators (BCAs) have been developed and tested in an open air environment to demonstrate their use as electromechanochemical actuation devices. The actuator is a bimorph structure fabricated with Nafion, a solid electrolyte layer capable of ion diffusion, sandwiched between two buckypaper (BP) electrode layers. Actuation mechanisms were studied, revealing that ionic current flow is the major actuation mechanism. To further improve actuation performance, Nafion doping has been studied. LiCl and Imidazolium (IL) solutions have been used to dope the Nafion and both cases have demonstrated substantial increases of BCA displacement. With the dimensions of the BCA held constant(30 mm × 5 mm × 0.07 mm), a non-doped BCA with a 3 V stimulation input at 200 mHz only can generate a total bilateral displacement of up to 0.09 mm; but LiCl-doped and IL-doped BCAs can produce ×100 and ×150 more displacement than that of the non-doped BCAs, respectively. The effect of driving voltages and frequencies with respect to displacement and blocking force generation of IL-doped BCAs were characterized. BCA thickness variation was introduced to evaluate the effect of the BCA structure on actuation performance. The improved BCAs have achieved a maximum strain and stress of 0.1% and 0.175 MPa, respectively. This is comparable to other polymer-based actuators. Finally, a preliminary model of BCA blocking force estimation was proposed to predict and further optimize the BCA actuation properties. The predicted results of the model are in agreement with the experimental data.
Identifier: FSU_migr_etd-3329 (IID)
Submitted Note: A Thesis submitted to the Department of Industrial Engineering in partial fulfillment of the requirements for the degree of Master of Science.
Degree Awarded: Summer Semester, 2010.
Date of Defense: June 11, 2010.
Keywords: Nanotube, Buckypaper, Actuator, Blocking Force, Conductive Polymers
Bibliography Note: Includes bibliographical references.
Advisory Committee: Richard Liang, Professor Directing Thesis; Chuck Zhang, Committee Member; William Oates, Committee Member.
Subject(s): Industrial engineering
Persistent Link to This Record: http://purl.flvc.org/fsu/fd/FSU_migr_etd-3329
Owner Institution: FSU

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Labrador, D. (2010). Characterization of the Blocking Force Generated by Buckypaper Composite Actuators. Retrieved from http://purl.flvc.org/fsu/fd/FSU_migr_etd-3329