Graphene/gelatin hydrogel composites with high storage modulus sensitivity for using as electroactive actuator: Effects of surface area and electric field strength

Tungkavet, Thawatchai; Seetapan, Nispa; Pattavarakorn, Datchanee; Sirivat, Anuvat

doi:10.1016/j.polymer.2015.06.027

Cited by 34 publications

(20 citation statements)

References 45 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Furthermore, blending cellulose derivatives with electroactive fillers such as poly(3‐hydroxybutyrate), fullerenol, and polyaniline increased the bending displacement at low humidity, and decreased the power consumption. Other less common biopolymers such as gelatin and soy protein also show potential for use in electroactive actuators. Although these natural polymers are inexpensive, biocompatible, and biodegradable on their own, the electrodes still require the use of noble metals or nanomaterials, which effectively negates these advantages.…”

Section: Ionic Polymer–metal Compositesmentioning

confidence: 99%

Advances in Polymeric Materials for Electromechanical Devices

White

Long

2018

Macromol. Rapid Commun.

View full text Add to dashboard Cite

DEs especially exhibit potential for mimicking human muscles due to their high strain capacity and work density. [6] Polymers used for DEs often include siloxanes or acrylic elastomers, and the optimal DE actuators (DEA) in literature are surprisingly comprised of a commercial acrylic adhesive from 3 M. [7] However, these DEs require prestretching and large driving voltages to achieve large actuation strains, which limit their impact. The past decade has seen a plethora of research dedicated to finding materials to circumvent these limitations.Nafion has long served as the benchmark material for IPMCs due to its commercial availability and superior actuation performance at low voltages. Nafion actuators, however, have several drawbacks such as: low bending performance at low humidity, processing difficulties, and back relaxation. Due to these limitations, interest in new ionic polymers for IPMCs continues to grow in the literature. [8] This review aims to summarize the progress made in materials for EAP actuators over the past decade, focusing on IPMCs and DEAs, which comprise a significant fraction of the recent advances.

show abstract

Section: Ionic Polymer–metal Compositesmentioning

confidence: 99%

Advances in Polymeric Materials for Electromechanical Devices

White

Long

2018

Macromol. Rapid Commun.

View full text Add to dashboard Cite

show abstract

“…Owing to its excellent NIR‐absorbing abilities, high humidity sensitivity, and non‐water‐absorbing properties, the as‐prepared bilayer actuator exhibits asymmetric shrinkage/expansion under periodic NIR light irradiation and shows quick worm‐like motion on a ratchet substrate. Sirivat et al . have fabricated a bioactuator based on graphene/gelatin hydrogel composites that shows high storage modulus sensitivity.…”

Section: Applications Of Polymer/graphene Hybrids In Energy Conversionmentioning

confidence: 99%

“…Owing to its excellent NIR-absorbing abilities, high humidity sensitivity,a nd nonwater-absorbing properties, the as-prepared bilayer actuator exhibits asymmetrics hrinkage/expansion under periodic NIR light irradiation and shows quick worm-likemotion on aratchet substrate. Sirivat et al [70] have fabricatedabioactuator based on graphene/gelatin hydrogel composites that shows high storagem odulus sensitivity.T he graphene/gelatin hydrogel composites with high surfacea reas exhibit ah igh dynamic modulus( G')o f1 .25 10 6 Pa and ah igh storagem odulus sensitivity (DG'/G' 0 )v alue of 352 %. In addition, because of the existence of av ast number of polarized carboxyl groups,t he deflectiond istance and the dielectrophores force of the graphene/gelatin hydrogel composites reach 14.7 mm and 0.082 N, respectively.Z hang and co-workers [71] have reported an ovel air-working ionic actuator in whicharGO/PANI nanocomposite film and H 2 SO 4 -PVAa ct as the electrode and gel electrolyte, respectively.T he composite electrode displays good mechanical properties and ahigh electrochemical capacitance.…”

Section: Actuatorsmentioning

confidence: 99%

Polymer/Graphene Hybrids for Advanced Energy‐Conversion and ‐Storage Materials

Cui

Gao

et al. 2016

Chemistry An Asian Journal

View full text Add to dashboard Cite

Polymer/graphene-based materials with interesting physical and chemical properties have been attracting considerable attention and have been shown to have great potential as active materials in the field of energy conversion and storage. In this review, we focus on recent significant advances in the fabrication and application of polymer/graphene hybrids as electrocatalysts and electrode materials. Synthetic strategies and application of these materials in energy conversion and storage are presented, particularly in devices such as fuel cells, actuators, and supercapacitors, accompanied with a discussion of the challenges and research directions necessary for the future development of polymer/graphene hybrids.

show abstract

“…These factors are the disadvantages for generating a homogenous conductive system in hydrogel network. To overcome these obstacles, graphene oxide (GO) obtained from graphite and reduced graphene oxide (RGO) obtained from reduction of GO, which are most widespread derivatives of graphene are considerable preferred to use in the production of ECHs . GO exhibits relatively low electrical conductivity compared to RGO .…”

Section: Introductionmentioning

confidence: 99%

“…To overcome these obstacles, graphene oxide (GO) obtained from graphite and reduced graphene oxide (RGO) obtained from reduction of GO, which are most widespread derivatives of graphene are considerable preferred to use in the production of ECHs. 4,5 GO exhibits relatively low electrical conductivity compared to RGO. 6 This difference results from that; while the oxygen atoms of GO eliminate the honeycomb lattices structure consisting of sp 2 -hybridized carbon atoms causing a loss of conductivity, RGO restores the sp 2 -hybridized carbon system and thus improves conductivity.…”

Section: Introductionmentioning

confidence: 99%

Production of reduced graphene oxide‐based electrically conductive hydrogel by using modified chitosan

Ulutürk

Alemdar

2019

J of Applied Polymer Sci

View full text Add to dashboard Cite

Herein, a new approach was applied to produce reduced graphene oxide (RGO)‐based conductive hydrogel by using modified chitosan (CTS) as a primary constituent. A variety amounts of RGO (from 0 to 15%) were incorporated into the polymeric network generated by photopolymerization of CTS‐graft‐glycidyl methacrylate (CTS‐g‐GMA) and poly(ethylene glycol)diacrylate (PEGDA). The structures of hydrogels were confirmed by FT‐IR, XRD, and SEM analyses. Water uptake capacity of hydrogels determined gravimetrically. L929 fibroblast cells were used for cytotoxicity test. According to conductivity measurements carried out by four‐point probe technique, the highest conductivity (1.716 × 10−3 S/cm) was obtained when 10% RGO was encapsulated into the polymeric structure. From the results, it could be envisaged that electroconductive hydrogel (ECH) fabricated in this study could have a potential usage for biosensor applications in the future projects. © 2019 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2019, 136, 48008.

show abstract

Graphene/gelatin hydrogel composites with high storage modulus sensitivity for using as electroactive actuator: Effects of surface area and electric field strength

Cited by 34 publications

References 45 publications

Advances in Polymeric Materials for Electromechanical Devices

Advances in Polymeric Materials for Electromechanical Devices

Polymer/Graphene Hybrids for Advanced Energy‐Conversion and ‐Storage Materials

Production of reduced graphene oxide‐based electrically conductive hydrogel by using modified chitosan

Contact Info

Product

Resources

About