Electrostrictive properties of thermoplastic polyurethane elastomer: Effects of urethane type and soft–hard segment composition

Petcharoen, Karat; Sirivat, Anuvat

doi:10.1016/j.cap.2013.03.005

Cited by 55 publications

(31 citation statements)

References 52 publications

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“…This morphology can be attributed to the higher site-specific interaction between TPU matrix and Mt-PPy.DBSA. The infrared spectra of neat TPU, TPU/PPy blends and TPU/Mt-PPy nanocomposites filled with 20 wt% is attributed to -NH group of urethane while the bands at 1219 and 1105 cm -1 are assigned to the ether group [43][44][45][46][47][48][49][50]. The spectra of the TPU/PPy and TPU/Mt-PPy exhibited overlapped absorption bands of PPy and TPU.…”

Section: Results and Discussion 31 Characterization Of Conductive Fmentioning

confidence: 97%

Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites

Ramôa¹,

Barra²,

Merlini³

et al. 2015

Express Polym. Lett.

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Abstract. This work describes the production of electrically conductive nanocomposites based on thermoplastic polyurethane (TPU) filled with montmorillonite-dodecylbenzenesulfonic acid-doped polypyrrole (Mt-PPy.DBSA) prepared by melt blending in an internal mixer. The electrical conductivity, morphology as well as the rheological properties of TPU/MtPPy.DBSA nanocomposites were evaluated and compared with those of TPU nanocomposites containing different conductive fillers, such as polypyrrole doped with hydrochloride acid (PPy.Cl) or dodecylbenzenesulfonic acid (PPy.DBSA) or montmorillonite-hydrochloride acid-doped polypyrrole (Mt-PPy.Cl), prepared with the same procedure. The TPU/MtPPy.DBSA nanocomposites display a very sharp insulator-conductor transition and the electrical percolation threshold was about 10 wt% of Mt-PPy.DBSA, which was significantly lower than those found for TPU/Mt-PPy.Cl, TPU/PPy.Cl and TPU/PPy.DBSA. Morphological analysis highlights that Mt-PPy.DBSA filler was better distributed and dispersed in the TPU matrix, forming a denser conductive network when compared to Mt-PPy.Cl, PPy.Cl and PPy.DBSA fillers. This morphology can be attributed to the higher site-specific interaction between TPU matrix and Mt-PPy.DBSA. The present study demonstrated the potential use of Mt-PPy.DBSA as new promising conductive nanofiller to produce highly conductive polymer nanocomposites with functional properties.

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Section: Results and Discussion 31 Characterization Of Conductive Fmentioning

confidence: 97%

Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites

Ramôa¹,

Barra²,

Merlini³

et al. 2015

Express Polym. Lett.

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“…The dielectrophoresis force was calculated from the static horizontal force balance consisting of the elastic force, the corrective gravity force, and the buoyancy force, as in Eq. (2), according to Petcharoen and Sirivat [22]:…”

Section: Characterization and Testingmentioning

confidence: 99%

Electromechanical response of silk fibroin hydrogel and conductive polycarbazole/silk fibroin hydrogel composites as actuator material

Srisawasdi

Petcharoen

Sirivat

et al. 2015

Materials Science and Engineering: C

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“…As a result, anisotropic EREs are obtained . Compared with isotropic EREs with randomly dispersed particles, anisotropic EREs present a much more significant ER effect . The mechanism involved in the ER effect of the anisotropic EREs is shown in Figure .…”

Section: Introductionmentioning

confidence: 98%

Dynamic viscoelasticity and phenomenological model of electrorheological elastomers

Zhang

Dong

et al. 2017

J of Applied Polymer Sci

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Electrorheological elastomers (EREs) present a tunable viscoelasticity with the application of an electric field. For their application, it is necessary to investigate the viscoelasticity of the EREs under various loading conditions and establish an accurate constitutive model. In this study, anisotropic silicone-rubber-based EREs with 30 vol % TiO 2 -urea core-shell particles were prepared under an orientation electric field. We evaluated their viscoelasticities by testing their shear stress-shear strain hysteresis loops under various electric fields, frequencies, and strain amplitudes. On the basis of the experimental data, a nonlinear, revised Bouc-Wen phenomenological model was established, and the parameters in the model were identified. The results indicate that the revised model could accurately describe the viscoelastic properties of the EREs within a low frequency.

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Electrostrictive properties of thermoplastic polyurethane elastomer: Effects of urethane type and soft–hard segment composition

Cited by 55 publications

References 52 publications

Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites

Novel electrically conductive polyurethane/montmorillonite-polypyrrole nanocomposites

Electromechanical response of silk fibroin hydrogel and conductive polycarbazole/silk fibroin hydrogel composites as actuator material

Dynamic viscoelasticity and phenomenological model of electrorheological elastomers

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