Piezoelectric properties of polypeptide-PMMA molecular composites fabricated by contact charging

Hwang, Yonghwan; Je, Yub; Farrar, Dawnielle; West, James E.; Yu, S. Michael

doi:10.1016/j.polymer.2011.04.060

Cited by 10 publications

(10 citation statements)

References 25 publications

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“…The piezoelectric coefficient was linearly increased with applied magnetic field, and it was not saturated at the magnetic field of 10 T. In addition, the fabrication of uniform and unidirectionally polarized PBLG‐PMMA composite film by the application of external electric field through corona discharging and contact charging methods has been reported (Figure 7b). 115,118 The fabricated piezoelectric film exhibited strong piezoelectricity ( d 33 = 23 pC N −1 ). In 2011, Farrar et al fabricated permanently polarized PBLG fibers using electrospinning methods (Figure 7c).…”

Section: Piezoelectricity Of Peptidementioning

confidence: 99%

Biomolecular Piezoelectric Materials: From Amino Acids to Living Tissues

et al. 2020

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Biomolecular piezoelectric materials are considered a strong candidate material for biomedical applications due to their robust piezoelectricity, biocompatibility, and low dielectric property. The electric field has been found to affect tissue development and regeneration, and the piezoelectric properties of biological materials in the human body are known to provide electric fields by pressure. Therefore, great attention has been paid to the understanding of piezoelectricity in biological tissues and its building blocks. The aim herein is to describe the principle of piezoelectricity in biological materials from the very basic building blocks (i.e., amino acids, peptides, proteins, etc.) to highly organized tissues (i.e., bones, skin, etc.). Research progress on the piezoelectricity within various biological materials is summarized, including amino acids, peptides, proteins, and tissues. The mechanisms and origin of piezoelectricity within various biological materials are also covered.

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Section: Piezoelectricity Of Peptidementioning

confidence: 99%

Biomolecular Piezoelectric Materials: From Amino Acids to Living Tissues

et al. 2020

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“…Because the α‐helix conformation has a permanent dipole moment in the direction of the helical axis, numerous researchers have attempted to polarize α‐helix PBLG and maintain this polarity for solid‐state applications such as planar microphones . We and others have experimented with various poling methodologies, including corona discharging, contact charging, and electrospinning (ES) . The piezoelectricity of electrospun PBLG fibers was first described by Farrar et al ., in which the d 33 coefficient was reported within an inconsistent range of values from 15 to 32 pC N −1 .…”

Section: Introductionmentioning

confidence: 99%

Electrospinning of poly(γ‐benzyl–α,L‐glutamate) microfibers for piezoelectric polymer applications

Nguyen

Moon

2018

J of Applied Polymer Sci

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One of the latest developments in the field of piezoelectric polymers is the use of poly(γ‐benzyl‐α,L‐glutamate) (PBLG), a poly(amino acid) that can be poled along its α‐helical axis and fabricated into thermally stable piezoelectric microfibers via electrospinning. This study demonstrates a method for improving the piezoelectricity of electrospun PBLG microfibers by controlling the orientation of fibers using a method based on a concentrated electric field. The piezoelectricity is verified via customized quasi‐static and dynamic measurement methods, while the correlation between fiber alignment and the piezoelectric constant, d33, in the longitudinal mode of the electrospun PBLG fibers is investigated. When the level of alignment was varied from 50% to 90%, the piezoelectric constant increased linearly, showing a maximum d33 of 27 pC N−1 and a maximum force sensitivity of 65 mV N−1 at peak alignment. A fabricated flexible prototype based on electrospun PBLG fibers provides a new solution for the use of PBLG fibers in wearable energy harvesters or composites based on piezoelectric polymer fibers. © 2018 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 46440.

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“…The stable α‐helical structure in a PBLG solution is formed by intramolecular hydrogen bonds between an amino group (NH) and a carboxyl group (CO) at the fourth next residue (Figure ). Some researchers have attempted to produce polar PBLG materials using a variety of methods, including the use of a strong magnetic field, the end‐grafting method on solid substrates, and electrospinning, and by integration into composite structures . Hwang et al .…”

Section: Introductionmentioning

confidence: 99%

“…Some researchers have attempted to produce polar PBLG materials using a variety of methods, including the use of a strong magnetic field, the end‐grafting method on solid substrates, and electrospinning, and by integration into composite structures . Hwang et al . reported that a 3‐mm‐thick and stiff PBLG/poly(methylmethacrylate) (PMMA) composite fabricated by contact charging could produce a piezoelectric coupling effect d 33 of 1.90 pC/N with a PBLG volume fraction of 30%.…”

Section: Introductionmentioning

confidence: 99%

Piezoelectric polymer microfiber‐based composite for the flexible ultra‐sensitive pressure sensor

Nguyen

Moon

2019

J of Applied Polymer Sci

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This study presents a new type of composite consisting of piezoelectric poly(γ-benzyl-α, L-glutamate) (PBLG) polymer fibers, which contain a large dipole moment, and the elastomer polydimethylsiloxane (PDMS) as the matrix material. PBLG microfibers were fabricated and polarized using the electrospinning method and cast in PDMS to form a unidirectional continuous-fiber composite. The PBLG/PDMS composite was characterized based on various aspects such as crystalline structure, mechanical properties, piezoelectricity, and electromechanical response. The piezoelectric charge constants in the transverse and longitudinal modes were measured to be 10.2 and 54 pC/N, respectively, which are the largest piezoelectric coefficients of biocompatible polymers up to date. The thin PBLG/PDMS composite film can produce up to 200 mV peak-to-peak under sinusoidal actuation and exhibit ultra-sensitivity up to 615 mV N −1 . These results show the great potential of the highly flexible piezoelectric polymer fiber-based composite for use in a variety of applications such as energy harvesting devices, biomechanical self-powered structures, and force sensors.

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Piezoelectric properties of polypeptide-PMMA molecular composites fabricated by contact charging

Cited by 10 publications

References 25 publications

Biomolecular Piezoelectric Materials: From Amino Acids to Living Tissues

Biomolecular Piezoelectric Materials: From Amino Acids to Living Tissues

Electrospinning of poly(γ‐benzyl–α,L‐glutamate) microfibers for piezoelectric polymer applications

Piezoelectric polymer microfiber‐based composite for the flexible ultra‐sensitive pressure sensor

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