Poly (vinylidene fluoride) nanofibers (PVDF NFs) have been extensively used in energy harvesting applications due to their promising piezoresponse characteristics. However, the mechanical properties of the generated fibers are still lacking. Therefore, we are presenting in this work a promising improvement in the elasticity properties of PVDF nanofibrous membrane through thermoplastic polyurethane (TPU) additives. Morphological, physical, and mechanical analyses were performed for membranes developed from different blend ratios. Then, the impact of added weight ratio of TPU on the piezoelectric response of the formed nanofibrous composite membranes was studied. The piezoelectric characteristics were studied through impulse loading testing where the electric voltage had been detected under applied mass weights. Piezoelectric characteristics were investigated further through a pressure mode test the developed nanofibrous composite membranes were found to be mechanically deformed under applied electric potential. This work introduces promising high elastic piezoelectric materials that can be used in a wide variety of applications including energy harvesting, wearable electronics, self-cleaning filters, and motion/vibration sensors.
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http://dx.doi.org/10.3390/polym11101634 | DOI Listing |
ACS Biomater Sci Eng
December 2024
Department of Pharmacology, Faculty of Pharmacy, Istanbul Kent University, Istanbul 34406, Türkiye.
Epilepsy is one of the oldest neurological disorders discovered by mankind. This condition is firmly coupled with unprovoked seizures stimulated by irrepressible neuroelectrical blasts. Orally taken valproate family has been employed for prophylactic management; however, oral administration is not applicable for critical scenarios, thus calling for medication routes fulfilling necessities of immediate innervation.
View Article and Find Full Text PDFACS Appl Mater Interfaces
December 2024
Centre of Polymer Systems, University Institute, Tomas Bata University in Zlin, třída Tomáše Bati 5678, 76001 Zlín, Czech Republic.
Bone tissue engineering demands advanced biomaterials with tailored properties. In this regard, composite scaffolds offer a strategy to integrate the desired functionalities. These scaffolds are expected to provide sufficient cellular activities while maintaining the required strength necessary for the bone repair for which they are intended.
View Article and Find Full Text PDFInt J Biol Macromol
December 2024
Centre of Polymer Systems, Tomas Bata University in Zlín, tř. Tomáše Bati 5678, 760 01 Zlín, Czech Republic. Electronic address:
This study introduces a novel, sustainable method for synthesizing sub-5 nm palladium nanoparticles (PdNPs) and covalently binding them to chitosan nanofibers (CHITs) using fully oxidized dialdehyde cellulose (DAC). Notably, the DAC acts not only as a reducing and stabilizing agent for PdNPs, but also as a linker for their rapid and spontaneous covalent attachment to CHITs via Schiff base chemistry. This unique approach yields PdNPs with a narrow size distribution (4.
View Article and Find Full Text PDFJ Chem Phys
December 2024
Institute of Macromolecular Chemistry, Czech Academy of Sciences, Heyrovský Sq. 2, 162 00 Prague 6, Czech Republic.
Ultrathin electrospun nanofibrous membranes (NfMs) based on poly(γ-benzyl-L-glutamate) (PBLG) were prepared. Scanning electron microscopy analysis revealed the production of a high-quality, bead-free nanofibrous membrane. The membrane thicknesses, ranging from 1.
View Article and Find Full Text PDFMaterials (Basel)
November 2024
Research Lab of Advanced, Composite, Nanomaterials and Nanotechnology (R-NanoLab), School of Chemical Engineering, National Technical University of Athens, 9 Heroon Polytechniou Str., Zographos, 15780 Athens, Greece.
In this paper, we explore a straightforward two-step method to produce high-purity, vertically aligned multi-walled carbon nanofibres (MWCNFs) via chemical vapor deposition (CVD). Two distinct solutions are utilized for this CVD method: a catalytic solution consisting of ferrocene and acetonitrile (ACN) and a carbon source solution with camphor and ACN. The vapors of the catalytic solution inserted in the reaction chamber through external boiling result in a floating catalyst CVD approach that produces vertically aligned CNFs in a consistent manner.
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