Poly (vinylidene fluoride)/graphene oxide nanocomposites for piezoelectric applications: Processing, structure, dielectric and ferroelectric properties

Adaval, Akanksha; Chinya, Ipsita; Bhatt, Bharat Bhushan; Kumar, Saurabh; Gupta, Dipti; Samajdar, Indradev; Aslam, M.; Turney, Terence W.; Simon, George P; Bhattacharyya, Arup R.

doi:10.1016/j.nanoso.2022.100899

Cited by 16 publications

(24 citation statements)

References 40 publications

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“…As observed in the figure, two relaxation regions can be discerned at a lower and a higher frequency, respectively. The relaxation peak at the lower frequency occurs due to interfacial polarization 25,28 . Further, it is observed that the relaxation peak shifts towards higher frequency as GO is incorporated into the UHMWPE matrix.…”

Section: Resultsmentioning

confidence: 92%

“…In order to understand the significance of UHMWPE to be considered as a ferroelectric polymer, Table 1 enlists the corresponding values with one of the most important commercial polymer, poly (vinylidene fluoride) (PVDF) film, which shows ferroelectric properties. The process of making the compression molded PVDF film has been reported elsewhere 25 and the ferroelectric polarization as a function of electric field investigation has been carried out at the similar conditions in both UHMWPE and PVDF.…”

Section: Resultsmentioning

confidence: 99%

“…24 DI water was used as a solvent. GO flakes were characterized by atomic force microscopy (AFM) 25 using Agilent 5500 scanning probe microscope and the results are shown in Figure S1. The flake size was in the range of 6-9 μm.…”

Section: Methodsmentioning

confidence: 99%

“…The relaxation peak at the lower frequency occurs due to interfacial polarization. 25,28 Further, it is observed that the relaxation peak shifts towards higher frequency as GO is incorporated into the UHMWPE matrix. This can be due to the interfacial interactions occurring between GO and UHMWPE polymer suggesting an enhancement in the interfacial polarization of the nanocomposite.…”

Section: Broadband Dielectric Spectroscopy (Bds)mentioning

confidence: 96%

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Exploring interfacial interactions, dielectric, ferroelectric and piezoelectric properties of ultrahigh molecular weight polyethylene/graphene oxide nanocomposites

Adaval

Karumuthil

Shafeeq

et al. 2022

J of Applied Polymer Sci

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Graphene oxide (GO) incorporated ultra‐high molecular weight polyethylene (UHMWPE) nanocomposites were prepared by encapsulating GO by UHMWPE in an aqueous media via high‐shear mixing, which were subsequently dried and compression molded. Morphological characterizations via scanning electron microscopy revealed the intercalation of UHMWPE chains in the graphitic stacks corresponding to GO. Further, dielectric permittivity of UHMWPE/GO nanocomposite of 1 wt% GO showed a drastic increase (~61) as compared to pure UHMWPE (~2) due to an enhanced interfacial polarization. A significantly higher value of remnant polarization (~10 nC/cm2) and coercive field (~3 kV/cm) was observed in UHMWPE/GO nanocomposite of 1 wt% GO, which showed a strong hysteresis loop of polarization versus electric field plot as compared to pure UHMWPE, which displayed a very weak hysteresis loop. The piezoelectric coefficient (d33) of ~9.5 pm/V was estimated in UHMWPE/GO nanocomposite of 1 wt% GO via piezoresponse force microscopy. Nanocomposite sensor devices were also fabricated and piezoelectric output voltage of ~6 V was recorded in UHMWPE/GO nanocomposite of 1 wt% of GO. We report here for the first time the unique ferroelectric and piezoelectric properties displayed by UHMWPE/GO nanocomposites.

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Section: Resultsmentioning

confidence: 92%

Section: Resultsmentioning

confidence: 99%

Section: Methodsmentioning

confidence: 99%

Section: Broadband Dielectric Spectroscopy (Bds)mentioning

confidence: 96%

See 2 more Smart Citations

Exploring interfacial interactions, dielectric, ferroelectric and piezoelectric properties of ultrahigh molecular weight polyethylene/graphene oxide nanocomposites

Adaval

Karumuthil

Shafeeq

et al. 2022

J of Applied Polymer Sci

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“…They also act as heterogeneous nucleating agents and enhance the rate of crystallization of the nanocomposites. Graphene oxide (GO), hexagonal boron nitride (h-BN), expanded graphite (EG), metal–organic frameworks (MOFs), and molybdenum disulfide (MoS 2 ) are some of the extensively studied 2D nanomaterials in polymer nanocomposites for various interesting applications. − …”

Section: Introductionmentioning

confidence: 99%

2D Nanomaterials Incorporated Poly(vinylidene fluoride) Nanocomposites: Morphology, Crystalline Structure, and Dielectric, Ferroelectric, and Piezoelectric Properties

et al. 2023

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Two-dimensional layered nanomaterials (hexagonal boron nitride (h-BN) and expanded graphite (EG)) incorporated poly(vinylidene fluoride) (PVDF) nanocomposites were fabricated via high-shear solution mixing accompanied by compression molding. “Ultrasonication” followed by “centrifugation” was employed to “de-stack” h-BN and EG, which exhibited a decrease in “agglomerate” size in PVDF/h-BN and PVDF/EG nanocomposites. Further, the PVDF/h-BN nanocomposite showed a polar fraction of ∼57% at 0.50 wt % of h-BN concentration with an increased β-phase content, whereas the PVDF/EG nanocomposite showed a higher content of γ-phase as compared to β-phase. Moreover, dielectric investigations indicated that the “ultrasonicated” and “centrifuged” h-BN- and EG-based PVDF nanocomposites exhibit the highest dielectric properties owing to improved interfacial and dipolar polarizations. The piezoelectric strain coefficient of PVDF/0.16BN and PVDF/0.17EG nanocomposites exhibited d 33 values of ∼99 and ∼91 pm/V, respectively. Finally, sensor devices were fabricated based on PVDF/EG and PVDF/h-BN nanocomposite films, which showed a maximum peak-to-peak voltage of ∼24 V (at 0.17 wt % EG) and ∼14 V (at 0.16 wt % h-BN), respectively. A systematic investigation was carried out to relate the influence of finely dispersed h-BN and EG on the interfacial interactions, polar phase formation, and the piezoelectric property of PVDF/h-BN and PVDF/EG nanocomposites.

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Piezoelectric properties of noncovalently functionalized 2D nanomaterials incorporated poly(vinylidene fluoride) nanocomposites

Adaval,

Khurana,

Bhatt

et al. 2023

J of Applied Polymer Sci

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We report here for the first time the role of noncovalently functionalized 2D nanomaterials on the ferroelectric and piezoelectric behavior of poly(vinylidene fluoride) (PVDF) nanocomposites. Graphene oxide (GO), expanded graphite (EG) and hexagonal boron nitride (h‐BN) were noncovalently modified via Li‐salt of 6‐amino hexanoic acid (Li‐AHA), denoted as m‐GO, m‐EG and m‐BN, in order to de‐agglomerate and de‐stack them, which were subsequently incorporated into the PVDF matrix via solution mixing, followed by compression molding. Simultaneously, PVDF nanocomposites with unmodified 0.08 wt% of 2D nanomaterials were also prepared using the same methodology. PVDF/m‐BN nanocomposite showed a higher extent of polar phase (~36%) associated with PVDF phase as compared to PVDF/m‐GO and PVDF/m‐EG nanocomposites. Further, the highest permittivity (~58 at 10−1 Hz) was achieved in PVDF/m‐BN nanocomposite, which was also reflected in higher remnant polarization (~61 nC/cm2) and a significantly higher d33 value (~53 pm/V). Moreover, a higher output peak to peak voltage (~13 V) was obtained for the sensor device fabricated from PVDF/m‐BN nanocomposite. Thus, the role of Li‐AHA‐modified 2D nanomaterials in improving the morphology, dielectric, ferroelectric, and piezoelectric characteristics of the PVDF nanocomposites was clearly established.

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Poly (vinylidene fluoride)/graphene oxide nanocomposites for piezoelectric applications: Processing, structure, dielectric and ferroelectric properties

Cited by 16 publications

References 40 publications

Exploring interfacial interactions, dielectric, ferroelectric and piezoelectric properties of ultrahigh molecular weight polyethylene/graphene oxide nanocomposites

Exploring interfacial interactions, dielectric, ferroelectric and piezoelectric properties of ultrahigh molecular weight polyethylene/graphene oxide nanocomposites

2D Nanomaterials Incorporated Poly(vinylidene fluoride) Nanocomposites: Morphology, Crystalline Structure, and Dielectric, Ferroelectric, and Piezoelectric Properties

Piezoelectric properties of noncovalently functionalized 2D nanomaterials incorporated poly(vinylidene fluoride) nanocomposites

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