Energy harvesting performance of piezoelectric electrospun polymer fibers and polymer/ceramic composites

Nunes-Pereira, J.; Sencadas, Vítor; Correia, V.; Rocha, J. G.; Lanceros‐Méndez, S.

doi:10.1016/j.sna.2013.03.023

Cited by 146 publications

(84 citation statements)

References 35 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…For the nanocomposite samples, some filler clusters are observed among the polymeric electrospun matrix due to the large ceramic content for the given average fiber diameter, but the photocatalyst nanoparticles do not cover the entire fiber surface, even for higher TiO 2 concentrations (Figure 3d). Similar results were observed for electrospun fibers from BaTiO 3 /poly(vinylidene fluoride-trifluorethylene) (PVDFTrFE) in which the increase of filler content does not affect the polymeric fiber mean diameter, but some clusters of BaTiO 3 were found on the surface of the PVDF-TrFE [21]. Furthermore, it was reported that the incorporation of NaY zeolite in electrospun poly(vinylidene fluoride) (PVDF) fibers lead to an increase of the average fiber diameter and even for filler concentration as small as 4 wt%, some clusters were also observed in the surface of the polymeric fiber matrix [22].…”

Section: Figuresupporting

confidence: 79%

Development of electrospun photocatalytic TiO2-polyamide-12 nanocomposites

Cossich

Bergamasco

Amorim

et al. 2015

Materials Chemistry and Physics

Self Cite

View full text Add to dashboard Cite

Titanium dioxide (TiO2) in different forms such as films, fibers or particles are being extensively studied for removal of contaminants from aquatic environments due to its outstanding photocatalytic activity. This work reports the development of TiO 2 -polyamide 12 electrospun fiber mats. A systematic study on the influence of electrospun processing parameters on polymer fiber morphology was performed. It was observed that the average fiber diameter is mainly influenced by polymer concentration and average fiber diameters between 404 ± 82 nm and 1442 ± 360 nm were obtained. Polyamide-12 (PA-12) was used as a polymer matrix and electrospun with 0, 10 and 20 wt% of TiO 2 . It was observed that the filler does not change the average fiber diameter, being similar to that observed for neat PA-12 fibers processed under the same experimental conditions. The TiO 2 were particles dispensed not only in the bulk of the polymeric matrix but also on the surface of the fibers, especially for the samples with higher filler contents. Neat and nanocomposite electrospun samples show a hydrophobic behavior and a degree of crystallinity of ~25%. The photocatalytic performance of the processed samples was measured by following the degradation capability of a chosen dye, methylene blue (MB). Results show that the nanocomposite samples have a remarkable photocatalytic activity, especially the one with a higher load of TiO 2 particles (20 wt%), with all MB being removed from the solution after 100 min. AbstractTitanium dioxide (TiO 2 ) in different forms such as films, fibers or particles are being extensively studied for removal of contaminants from aquatic environments due to its outstanding photocatalytic activity. This work reports the development of TiO 2 -polyamide 12 electrospun fiber mats. A systematic study on the influence of electrospun processing parameters on polymer fiber morphology was performed. It was observed that the average fiber diameter is mainly influenced by polymer concentration and average fiber diameters between 404±82 nm and 1442±360 nm were obtained.Polyamide-12 (PA-12) was used as a polymer matrix and electrospun with 0, 10 and 20 wt% of TiO 2 . It was observed that the filler does not change the average fiber diameter, being similar to that observed for neat PA-12 fibers processed under the same experimental conditions. The TiO 2 were particles dispensed not only in the bulk of the polymeric matrix but also on the surface of the fibers, especially for the samples with 2 higher filler contents. Neat and nanocomposite electrospun samples show a hydrophobic behavior and a degree of crystallinity of ~ 25%.The photocatalytic performance of the processed samples was measured by following the degradation capability of a chosen dye, methylene blue (MB). Results show that the nanocomposite samples have a remarkable photocatalytic activity, especially the one with a higher load of TiO 2 particles (20 wt%), with all MB being removed from the solution after 100 min.

show abstract

Section: Figuresupporting

confidence: 79%

Development of electrospun photocatalytic TiO2-polyamide-12 nanocomposites

Cossich

Bergamasco

Amorim

et al. 2015

Materials Chemistry and Physics

Self Cite

View full text Add to dashboard Cite

show abstract

“…Nunes-Pereira et al reported a piezoelectric fiber composite based flexible energy harvester for wearable applications. Piezoelectric fiber composite (PFC) based devices presented a larger output than PVDF based ones [8]. Lin et al presented a ZnO nano wire array based flexible nano generator by employing polydimethylsiloxane (PDMS) [9].…”

Section: Introductionmentioning

confidence: 99%

Micro-fabricated flexible PZT cantilever using d33 mode for energy harvesting

Cho

Park

2017

Micro and Nano Syst Lett

View full text Add to dashboard Cite

This paper presents a micro-fabricated flexible and curled PZT [Pb(Zr 0.52 Ti 0.48 )O 3 ] cantilever using d 33 piezoelectric mode for vibration based energy harvesting applications. The proposed cantilever based energy harvester consists of polyimide, PZT thin film, and inter-digitated IrO x electrodes. The flexible cantilever was formed using bulk-micromachining on a silicon wafer to integrate it with ICs. The d 33 piezoelectric mode was applied to achieve a large output voltage by using inter-digitated electrodes, and the PZT thin film on polyimide layer has a remnant polarization and coercive filed of approximately 2P r = 47.9 μC/cm 2 and 2E c = 78.8 kV/cm, respectively. The relative dielectric constant was 900. The fabricated micro-electromechanical systems energy harvester generated output voltages of 1.2 V and output power of 117 nW at its optimal resistive load of 6.6 MΩ from its resonant frequency of 97.8 Hz with an acceleration of 5 m/s 2 .

show abstract

“…Due to these intrinsic properties of PVDF, along with the advantages offered by the electrospun fibrous structures such as the high surface area and the flexibility in surface functionalities [16], electrospun PVDF mats have been applied in a wide range of applications [3], either as PVDF alone or with the incorporation of nano-sized fillers [17][18][19][20][21][22][23][24]. Wound healing patches [17], energy harvesting devices [18], electrolyte for lithium-ion batteries [19,20], and superhydrophobic surfaces for different purposes [3,21] are a few examples.…”

Section: Introductionmentioning

confidence: 99%