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Toalá CU, Prokhorov E, Barcenas GL, Landaverde MAH, Limón JMY, Gervacio-Arciniega JJ, de Fuentes OA, Tapia AMG. Electrostrictive and piezoelectrical properties of chitosan-poly(3-hydroxybutyrate) blend films. Int J Biol Macromol 2023; 250:126251. [PMID: 37562485 DOI: 10.1016/j.ijbiomac.2023.126251] [Citation(s) in RCA: 2] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/24/2023] [Revised: 07/27/2023] [Accepted: 08/07/2023] [Indexed: 08/12/2023]
Abstract
Herein, we report the high apparent piezoelectric coefficient for chitosan-poly(3-hydroxybutyrate) (CS-PHB) blend films. The structure of chitosan-poly(3-hydroxybutyrate) (CS-PHB) blend films, exploiting characteristics such as dielectric, polarization, apparent piezoelectric properties, and their dependencies on the composition, were investigated. Based on the results of XRD, SEM, FTIR, PFM, and dielectric spectroscopy measurements, the structure of CS-PHB blend films has been proposed, which consists of spheric-like inclusion formed by precipitating isotactic-PHB interface layer, which consists of syndiotactic-PHB hydrogen bonding with CS, and CS matrix. The synergistic effects of piezoelectricity and electrostriction help explain the high value of the apparent piezoelectric coefficient (d33) obtained in the blend film with 13 wt% of PHB (d33 ≈ 200 pC/N). The investigated CS-PHB blend films are a good candidate for tissue engineering applications.
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Affiliation(s)
- C Uitz Toalá
- Nanosciences Program, Cinvestav del IPN, Mexico; CINVESTAV del IPN, Unidad Querétaro, Mexico
| | - E Prokhorov
- CINVESTAV del IPN, Unidad Querétaro, Mexico.
| | - G Luna Barcenas
- Nanosciences Program, Cinvestav del IPN, Mexico; CINVESTAV del IPN, Unidad Querétaro, Mexico.
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2
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Prakash O, Tiwari S, Maiti P. Fluoropolymers and Their Nanohybrids As Energy Materials: Application to Fuel Cells and Energy Harvesting. ACS OMEGA 2022; 7:34718-34740. [PMID: 36211045 PMCID: PMC9535728 DOI: 10.1021/acsomega.2c04774] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Grants] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 07/28/2022] [Accepted: 09/09/2022] [Indexed: 06/16/2023]
Abstract
The current review article provides deep insight into the fluoropolymers and their applications in energy technology, especially in the field of energy harvesting and the development of fuel cell electrolyte polymeric membranes. Fluoropolymers have gained wide attention in the field of energy applications due to their versatile properties. The incorporation of nanofillers within the fluoropolymer to develop the nanohybrid results in an enhancement in the properties, like thermal, mechanical, gas permeation, different fuel cross-over phenomena through the membrane, hydrophilic/hydrophobic nature, ion transport, and piezo-electric properties for fabricating energy devices. The properties of nanohybrid materials/membranes are influenced by several factors, such as type of filler, their size, amount of filler, level of dispersion, surface acidity, shape, and formation of networking within the polymer matrix. Fluoropolymer-based nanohybrids have replaced several commercial materials due to their chemical inertness, better efficacy, and durability. The addition of certain electroactive fillers in the polymer matrix enhances the polar phase, which enhances the applicability of the hybrid for fuel cell and energy-harvesting applications. Poly(vinylidene fluoride) is one of the remarkable fluoropolymers in the field of energy applications such as fuel cell and piezoelectric energy harvesting. In the present review, a detailed discussion of the different kinds of nanofillers and their role in energy harvesting and fuel cell electrolyte membranes is projected.
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Affiliation(s)
- Om Prakash
- Kashi
Naresh Government PG College Gyanpur, Bhadohi 221304, India
| | - Shivam Tiwari
- School
of the Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi 221005, India
| | - Pralay Maiti
- School
of the Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi 221005, India
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Effect of Nano-Sized Poly(Butyl Acrylate) Layer Grafted from Graphene Oxide Sheets on the Compatibility and Beta-Phase Development of Poly(Vinylidene Fluoride) and Their Vibration Sensing Performance. Int J Mol Sci 2022; 23:ijms23105777. [PMID: 35628584 PMCID: PMC9146892 DOI: 10.3390/ijms23105777] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/20/2022] [Revised: 05/16/2022] [Accepted: 05/17/2022] [Indexed: 02/04/2023] Open
Abstract
In this work, graphene oxide (GO) particles were modified with a nano-sized poly(butyl acrylate) (PBA) layer to improve the hydrophobicity of the GO and improve compatibility with PVDF. The improved hydrophobicity was elucidated using contact angle investigations, and exhibit nearly 0° for neat GO and 102° for GO-PBA. Then, the neat GO and GO-PBA particles were mixed with PVDF using a twin screw laboratory extruder. It was clearly shown that nano-sized PBA layer acts as plasticizer and shifts glass transition temperature from −38.7 °C for neat PVDF to 45.2 °C for PVDF/GO-PBA. Finally, the sensitivity to the vibrations of various frequencies was performed and the piezoelectric constant in the thickness mode, d33, was calculated and its electrical load independency were confirmed. Received values of the d33 were for neat PVDF 14.7 pC/N, for PVDF/GO 20.6 pC/N and for PVDF/GO-PBA 26.2 pC/N showing significant improvement of the vibration sensing and thus providing very promising systems for structural health monitoring and data harvesting.
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4
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A porous piezoelectric-dielectric flexible energy conversion film for electricity generation from multiple sources. Chem Phys Lett 2021. [DOI: 10.1016/j.cplett.2021.138357] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
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Rana MM, Khan AA, Huang G, Mei N, Saritas R, Wen B, Zhang S, Voss P, Abdel-Rahman E, Leonenko Z, Islam S, Ban D. Porosity Modulated High-Performance Piezoelectric Nanogenerator Based on Organic/Inorganic Nanomaterials for Self-Powered Structural Health Monitoring. ACS APPLIED MATERIALS & INTERFACES 2020; 12:47503-47512. [PMID: 32969216 DOI: 10.1021/acsami.0c12874] [Citation(s) in RCA: 13] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/11/2023]
Abstract
In the modern era, structural health monitoring (SHM) is critically important and indispensable in the aerospace industry as an effective measure to enhance the safety and consistency of aircraft structures by deploying a reliable sensor network. The deployment of built-in sensor networks enables uninterrupted structural integrity monitoring of an aircraft, providing crucial information on operation condition, deformation, and potential damage to the structure. Sustainable and durable piezoelectric nanogenerators (PENGs) with good flexibility, high performance, and superior reliability are promising candidates for powering wireless sensor networks, particularly for aerospace SHM applications. This research demonstrates a self-powered wireless sensing system based on a porous polyvinylidene fluoride (PVDF)-based PENG, which is prominently anticipated for developing auto-operated sensor networks. Our reported porous PVDF film is made from a flexible piezoelectric polymer (PVDF) and inorganic zinc oxide (ZnO) nanoparticles. The fabricated porous PVDF-based PENG demonstrates ∼11 times and ∼8 times enhancement of output current and voltage, respectively, compared to a pure PVDF-based PENG. The porous PVDF-based PENG can produce a peak-to-peak short-circuit current of 22 μA, a peak-to-peak open-circuit voltage of 84.5 V, a peak output power of 0.46 mW (P=Voc2×Isc2), and a peak output power density of 41.02 μW/cm2 (P/A). By harnessing energy from minute vibrations, the fabricated porous PVDF-based PENG device (area of A = 11.33 cm2) can generate sufficient electrical energy to power up a customized wireless sensing and communication unit and transfer sensor data every ∼4 min. The PENG can generate sufficient electrical energy from an automobile car vibration, which reflects the scenario of potential real-life SHM systems. We anticipate that this high-performance porous PVDF-based PENG can act as a reliable power source for the sensor networks in aircraft, which minimizes potential safety risks.
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Affiliation(s)
- Md Masud Rana
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
- Department of Electrical and Computer Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Asif Abdullah Khan
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
- Department of Electrical and Computer Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Guangguang Huang
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
- Department of Electrical and Computer Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Nanqin Mei
- Department of Physics & Astronomy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Resul Saritas
- Department of Systems Design Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Boyu Wen
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
- Department of Electrical and Computer Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Steven Zhang
- Department of Electrical and Computer Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Peter Voss
- Shimco North America Inc., 75 Heroux Devtek Dr, Cambridge, Ontario N3E 0A7, Canada
| | - Eihab Abdel-Rahman
- Department of Systems Design Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Zoya Leonenko
- Department of Physics & Astronomy, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
| | - Shariful Islam
- Shimco North America Inc., 75 Heroux Devtek Dr, Cambridge, Ontario N3E 0A7, Canada
| | - Dayan Ban
- Waterloo Institute for Nanotechnology, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
- Department of Electrical and Computer Engineering, University of Waterloo, 200 University Avenue West, Waterloo, Ontario N2L 3G1, Canada
- School of Physics and Electronics, Henan University, No. 1 Jinming Street, Kaifeng, Henan 475001, P. R. China
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Prakash O, Mhatre AM, Tripathi R, Pandey AK, Yadav PK, Khan SA, Maiti P. Fabrication of Conducting Nanochannels Using Accelerator for Fuel Cell Membrane and Removal of Radionuclides: Role of Nanoparticles. ACS APPLIED MATERIALS & INTERFACES 2020; 12:17628-17640. [PMID: 32208641 DOI: 10.1021/acsami.0c02845] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
Latent tracks in pure polymer and its nanohybrid are fabricated by irradiating with swift heavy ions (SHI) (Ag+) having 140 MeV energy followed by selective chemical etching of the amorphous path, caused by the irradiation of SHI, to generate nanochannels of size ∼80 nm. Grafting is done within the nanochannels utilizing free radicals generated from the interaction of high-energy ions, followed by tagging of ionic species to make the nanochannels highly ion-conducting. The uniform dispersion of two-dimensional nanoparticles better controls the size and number density of the nanochannels and, thereby, converts them into an effective membrane. The nanoparticle and functionalization induce a piezoelectric β-phase in the membrane. The functionalized membrane removes the radioactive nuclide like 241Am+3 (α-emitting source) efficiently (∼80% or 0.35 μg/cm2) from its solution/waste. This membrane act as a corrosion inhibitor (92% inhibition efficiency) together with its higher proton conduction (0.13 S/m) ability. The higher ion-exchange capacity, water uptake, ion conduction, and high sorption by the nanohybrid membrane are explored with respect to the extent of functionalization and control over nanochannel dimension. A membrane electrode assembly has been fabricated to construct a complete fuel cell, which exhibits superior power generation (power density of 45 mW/cm2 at a current density of 298 mA/cm2) much higher than that of the standard Nafion, measured in a similar condition. Further, a piezoelectric matrix along with its anticorrosive property, high sorption characteristics, and greater power generation makes this class of material a smart membrane that can be used for many different applications.
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Affiliation(s)
- Om Prakash
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi 221 005, India
| | - Amol M Mhatre
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Rahul Tripathi
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
- Homi Bhabha National Institute, Anushaktinagar, Mumbai 400094, India
| | - Ashok K Pandey
- Radiochemistry Division, Bhabha Atomic Research Centre, Trombay, Mumbai 400 085, India
| | - Pravesh Kumar Yadav
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi 221 005, India
| | - Saif A Khan
- Inter University Accelerator Centre, Aruna Asaf Ali Marg, New Delhi 110 067, India
| | - Pralay Maiti
- School of Materials Science and Technology, Indian Institute of Technology (BHU), Varanasi 221 005, India
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7
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Si SK, Paria S, Karan SK, Ojha S, Das AK, Maitra A, Bera A, Halder L, De A, Khatua BB. In situ-grown organo-lead bromide perovskite-induced electroactive γ-phase in aerogel PVDF films: an efficient photoactive material for piezoelectric energy harvesting and photodetector applications. NANOSCALE 2020; 12:7214-7230. [PMID: 32195528 DOI: 10.1039/d0nr00090f] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/10/2023]
Abstract
The unique combination of piezoelectric energy harvesters and light detectors progressively strengthens their application in the development of modern electronics. Here, for the first time, we fabricated a polyvinylidene fluoride (PVDF) and formamidinium lead bromide nanoparticle (FAPbBr3 NP)-based composite aerogel film (FAPbBr3/PVDF) for harvesting electrical energy and photodetector applications. The uniform distribution of FAPbBr3 NPs in FAPbBr3/PVDF was achieved via the in situ synthesis of FAPbBr3 NPs in the PVDF matrix, which led to the stabilization of the γ-phase. The freeze-drying process induced an interconnected porous architecture in the composite film, making it more sensitive to small mechanical stimuli. Owing to this unique fabrication technique, the constructed aerogel film-based nanogenerator (FPNG) exhibited an output voltage and current of ∼26.2 V and ∼2.1 μA, respectively, which were 5-fold higher than that of the nanogenerator with the pure PVDF film. Also, the sensitivity of FPNG upon the irradiation of light was demonstrated by the output voltage reduction of ∼38%, indicating its capability as a light sensing device. Furthermore, the prepared FAPbBr3/PVDF composite was found to be an efficient candidate for light detection applications. A simple planar photodetector was fabricated with the 8.0 wt% FAPbBr3 NP-loaded PVDF composite, which displayed very high responsivity (8 A/W) and response speed of 2.6 s. Thus, this exclusive combination of synthesis and fabrication for the preparation of electro-active films opens a new horizon in the piezoelectric community for effective energy harvesting and light detector applications.
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Affiliation(s)
- Suman Kumar Si
- Materials Science Centre, Indian Institute of Technology, Kharagpur - 721302, India.
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8
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Gaur A, Tiwari S, Kumar C, Maiti P. Retracted Article: A bio-based piezoelectric nanogenerator for mechanical energy harvesting using nanohybrid of poly(vinylidene fluoride). NANOSCALE ADVANCES 2019; 1:3200-3211. [PMID: 36133603 PMCID: PMC9418055 DOI: 10.1039/c9na00214f] [Citation(s) in RCA: 5] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/05/2019] [Accepted: 06/26/2019] [Indexed: 05/21/2023]
Abstract
A bio-based piezoelectric egg shell membrane (ESM) is used for energy harvesting applications in the form of two and three-component nanohybrids. A bio-waste piezo-filler in a piezoelectric polymer matrix was designed through an induced β-phase nucleation in the matrix using an organically modified two-dimensional nanoclay. Structural alteration (α to β-phase) in the presence of the nanoparticles was also manifested by morphological changes over spherulite to a needle-like morphology; thus, these nanohybrid materials are suitable for energy harvesting applications. ESM-based nanogenerators were fabricated with local ordering of piezo phases, as revealed via atomic force microscopy, leading to the generation of mostly electroactive phases in the whole nanohybrid. The voltage outputs from the optimized device were measured to be ∼56 and 144 V in single and multiple stacks (five), respectively, with corresponding power densities of 55 μW cm-2 and 100 μW cm-2. The efficiency of the device was verified using a variety of body movements, e.g. bending, twisting, walking, and foot tapping, causing mechanical energy dissipation, which eventually transformed into energy storage. The underlying mechanism of high conversion of energy is explained by the synergistically induced piezo-phase in the polymer matrix together with the floppy piezo-filler. The mechanical stability, durability and repeated energy conversion of the hybrid device make it a robust nanogenerator. The biocompatibility of the nanogenerator was verified through cellular studies, demonstrating its appropriate use in powering biomedical devices/implants.
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Affiliation(s)
- Anupama Gaur
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University) Varanasi 221005 India
| | - Shivam Tiwari
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University) Varanasi 221005 India
| | - Chandan Kumar
- School of Biomedical Engineering, Indian Institute of Technology (Banaras Hindu University) Varanasi 221005 India
| | - Pralay Maiti
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University) Varanasi 221005 India
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Kiersnowski A, Chrissopoulou K, Selter P, Chlebosz D, Hou B, Lieberwirth I, Honkimäki V, Mezger M, Anastasiadis SH, Hansen MR. Formation of Oriented Polar Crystals in Bulk Poly(vinylidene fluoride)/High-Aspect-Ratio Organoclay Nanocomposites. LANGMUIR : THE ACS JOURNAL OF SURFACES AND COLLOIDS 2018; 34:13375-13386. [PMID: 30350703 DOI: 10.1021/acs.langmuir.8b02412] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
We have investigated the formation of lamellar crystals of poly(vinylidene fluoride) (PVDF) in the presence of oriented clay particles with different aspect ratios (ARs) and surface properties. Hot-melt screw extrusion of PVDF with 5 wt % of montmorillonite (AR ≈ 12) or fluoromica (AR ≈ 27) resulted in formation of phase-separated blends. Replacing the clays with their organoclay derivatives, organomontmorillonite or organofluoromica, resulted in the corresponding intercalated nanocomposites. The organoclays induced formation of polar β- and γ-polymorphs of PVDF in contrast to the α-polymorph, which dominates in the pure PVDF and the PVDF/clay blends. Solid-state nuclear magnetic resonance revealed that the content of the α-phase in the nanocomposites was never higher than 7% of the total crystalline phase, whereas the β/γ mass ratio was close to 1:2, irrespective of the AR or crystallization conditions. X-ray diffraction showed that the oriented particles with a larger AR caused orientation of the polar lamellar crystals of PVDF. In the presence of the organofluoromica, PVDF formed a chevron-like lamellar nanostructure, where the polymer chains are extended along the extrusion direction, whereas the lamellar crystals were slanted from normal to the extrusion direction. Time-resolved X-ray diffraction experiments allowed the identification of the formation mechanism of the chevron-like nanostructure.
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Affiliation(s)
- Adam Kiersnowski
- Max Planck Institute for Polymer Research , Ackermannweg 10 , D-55128 Mainz , Germany
- Faculty of Chemistry , Wroclaw University of Science and Technology , Wybrzeze Wyspianskiego 27 , 50-370 Wroclaw , Poland
| | - Kiriaki Chrissopoulou
- Institute of Electronic Structure and Laser , Foundation for Research and Technology-Hellas , P.O. Box 1527, 711 10 Heraklion , Crete , Greece
| | - Philipp Selter
- Institute of Physical Chemistry , Westfälische Wilhelms-Universität Münster , Corrensstr. 28/30 , D-48149 Münster , Germany
| | - Dorota Chlebosz
- Faculty of Chemistry , Wroclaw University of Science and Technology , Wybrzeze Wyspianskiego 27 , 50-370 Wroclaw , Poland
| | - Binyang Hou
- Max Planck Institute for Polymer Research , Ackermannweg 10 , D-55128 Mainz , Germany
- Department of Chemistry and Physical Science , Mount Vernon Nazarene University , 800 Martinsburg Road , Mount Vernon , Ohio 43050 , United States
| | - Ingo Lieberwirth
- Max Planck Institute for Polymer Research , Ackermannweg 10 , D-55128 Mainz , Germany
| | - Veijo Honkimäki
- European Synchrotron Radiation Facility, ESRF , 71 avenue des Martyrs , 38000 Grenoble , France
| | - Markus Mezger
- Max Planck Institute for Polymer Research , Ackermannweg 10 , D-55128 Mainz , Germany
| | - Spiros H Anastasiadis
- Institute of Electronic Structure and Laser , Foundation for Research and Technology-Hellas , P.O. Box 1527, 711 10 Heraklion , Crete , Greece
- Department of Chemistry , University of Crete , P.O. Box 2208, 710 03 Heraklion , Crete , Greece
| | - Michael Ryan Hansen
- Max Planck Institute for Polymer Research , Ackermannweg 10 , D-55128 Mainz , Germany
- Institute of Physical Chemistry , Westfälische Wilhelms-Universität Münster , Corrensstr. 28/30 , D-48149 Münster , Germany
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Biswas A, Singh AP, Rana D, Aswal VK, Maiti P. Biodegradable toughened nanohybrid shape memory polymer for smart biomedical applications. NANOSCALE 2018; 10:9917-9934. [PMID: 29770422 DOI: 10.1039/c8nr01438h] [Citation(s) in RCA: 41] [Impact Index Per Article: 6.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 06/08/2023]
Abstract
A polyurethane nanohybrid has been prepared through the in situ polymerization of an aliphatic diisocyanate, ester polyol and a chain extender in the presence of two-dimensional platelets. Polymerization within the platelet galleries helps to intercalate, generate diverse nanostructure and improve the nano to macro scale self-assembly, which leads to a significant enhancement in the toughness and thermal stability of the nanohybrid in comparison to pure polyurethane. The extensive interactions, the reason for property enhancement, between nanoplatelets and polymer chains are revealed through spectroscopic measurements and thermal studies. The nanohybrid exhibits significant improvement in the shape memory phenomena (91% recovery) at the physiological temperature, which makes it suitable for many biomedical applications. The structural alteration, studied through temperature dependent small angle neutron scattering and X-ray diffraction, along with unique crystallization behavior have extensively revealed the special shape memory behavior of this nanohybrid and facilitated the understanding of the molecular flipping in the presence of nanoplatelets. Cell line studies and subsequent imaging testify that this nanohybrid is a superior biomaterial that is suitable for use in the biomedical arena. In vivo studies on albino rats exhibit the potential of the shape memory effect of the nanohybrid as a self-tightening suture in keyhole surgery by appropriately closing the lips of the wound through the recovery of the programmed shape at physiological temperature with faster healing of the wound and without the formation of any scar. Further, the improved biodegradable nature along with the rapid self-expanding ability of the nanohybrid at 37 °C make it appropriate for many biomedical applications including a self-expanding stent for occlusion recovery due to its tough and flexible nature.
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Affiliation(s)
- Arpan Biswas
- School of Materials Science and Technology, Indian Institute of Technology (Banaras Hindu University), Varanasi 221 005, India.
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Jana K, Prakash O, Shahi VK, Avasthi DK, Maiti P. Poly(vinylidene fluoride- co-chlorotrifluoro ethylene) Nanohybrid Membrane for Fuel Cell. ACS OMEGA 2018; 3:917-928. [PMID: 31457938 PMCID: PMC6641277 DOI: 10.1021/acsomega.7b01635] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/25/2017] [Accepted: 12/29/2017] [Indexed: 05/19/2023]
Abstract
Through nanochannels are created in the polymer/hybrid films by irradiating swift heavy ions followed by selective chemical etching of the amorphous latent track caused by irradiation. The dimensions of the nanochannels are varied from 30 to 100 nm by either using small (lithium) and large (silver) size of swift heavy ions with high energy (80 MeV) or by embedding few percentage of two-dimensional nanoparticle in the polymer matrix. The side walls of the nanochannels are grafted with polystyrene using the free radicals created during irradiation. Polystyrene graft is functionalized by tagging sulfonate group in the benzene ring of polystyrene to make the nanochannels conducting and hydrophilic. The proof of grafting and functionalization is shown through various spectroscopic techniques. The relaxation behavior and thermal stability of graft polymer within the nanochannel are shown through different thermal measurements. Nanoclay in nanohybrid nucleates the piezoelectric phase in the polymer matrix whose extent is further increased in grafted and functionalized specimen. Functionalized nanochannels exclusively facilitate proton conducting, whereas the remaining part of the film is electroactive, making it as a smart membrane. Greater water uptake, ion exchange capacity (IEC), high activation energy (8.3 × 103 J mol-1), and high proton conduction (3.5 S m-1) make these functionalized nanohybrid film a superior membrane. Membrane electrode assembly has been made to check the suitability of these membranes for fuel cell application. Open circuit voltage and potential are significantly high for nanohybrid membrane (0.6 V) as compared to pure polymer (0.53 V). Direct methanol fuel cell testing using the membrane assembly exhibit a considerable high power density of ∼400 W m-2, making these developed membranes suitable for fuel cell application and providing the ability to replace standard membrane like Nafion, as the methanol permeability is low, thus raising the higher selectivity parameter of the nanohybrid membrane.
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Affiliation(s)
- Karun
Kumar Jana
- School
of Materials Science and Technology, Indian
Institute of Technology (BHU), Varanasi 221005, India
| | - Om Prakash
- School
of Materials Science and Technology, Indian
Institute of Technology (BHU), Varanasi 221005, India
| | - Vinod K. Shahi
- Electro-Membrane
Processes Division, CSIR-Central Salt and
Marine Chemicals Research Institute, Bhavnagar 364002, Gujarat, India
| | - Devesh K. Avasthi
- Amity
Institute of Nanotechnology, Amity University, Noida 201313, India
| | - Pralay Maiti
- School
of Materials Science and Technology, Indian
Institute of Technology (BHU), Varanasi 221005, India
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Kumar C, Gaur A, Rai SK, Maiti P. Piezo devices using poly(vinylidene fluoride)/reduced graphene oxide hybrid for energy harvesting. ACTA ACUST UNITED AC 2017. [DOI: 10.1016/j.nanoso.2017.10.006] [Citation(s) in RCA: 35] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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Gaur A, Kumar C, Shukla R, Maiti P. Induced Piezoelectricity in Poly(vinylidene fluoride) Hybrid as Efficient Energy Harvester. ChemistrySelect 2017. [DOI: 10.1002/slct.201701780] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
Affiliation(s)
- Anupama Gaur
- School of Materials Science and Technology; Indian Institute of Technology (Banaras Hindu University); Varanasi 221005 India
| | - Chandan Kumar
- School of Biomedical Engineering; Indian Institute of Technology (Banaras Hindu University); Varanasi 221005 India
| | - Rahul Shukla
- Indus Synchrotrons Utilization Division; Raja Ramanna Centre for Advanced Technology; Indore 452013 India
| | - Pralay Maiti
- School of Materials Science and Technology; Indian Institute of Technology (Banaras Hindu University); Varanasi 221005 India
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Choolaei M, Goodarzi V, Khonakdar HA, Jafari SH, Seyfi J, Saeb MR, Häußler L, Boldt R. Influence of Graphene Oxide on Crystallization Behavior and Chain Folding Surface Free Energy of Poly(vinylidenefluoride-co
-hexafluoropropylene). MACROMOL CHEM PHYS 2017. [DOI: 10.1002/macp.201700103] [Citation(s) in RCA: 14] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
Affiliation(s)
- Marzieh Choolaei
- Department of Chemical Engineering; Faculty of Engineering; Central Tehran Branch; Islamic Azad University; P.O. Box 19585-466 Tehran Iran
| | - Vahabodin Goodarzi
- Applied Biotechnology Research Center; Baqiyatallah University of Medical Sciences; P.O. Box 19945-546 Tehran Iran
| | - Hossein Ali Khonakdar
- Iran Polymer and Petrochemical Institute; Pazhoohesh Blvd., Km 17, Tehran-Karaj Hwy 1497713115 Tehran Iran
- Leibniz Institute of Polymer Research; 01069 Dresden Germany
| | - Seyed Hassan Jafari
- School of Chemical Engineering; College of Engineering; University of Tehran; P.O. Box 1115-4563 Tehran Iran
| | - Javad Seyfi
- Department of Chemical Engineering; Islamic Azad University, Shahrood Branch; P.O. Box 36155-163 Shahrood Iran
| | - Mohammad Reza Saeb
- Department of Resin and Additives; Institute for Color Science and Technology; P.O. Box 16765-654 Tehran Iran
| | - Liane Häußler
- Leibniz Institute of Polymer Research; 01069 Dresden Germany
| | - Regine Boldt
- Leibniz Institute of Polymer Research; 01069 Dresden Germany
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16
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Parangusan H, Ponnamma D, Al Ali AlMaadeed M. Flexible tri-layer piezoelectric nanogenerator based on PVDF-HFP/Ni-doped ZnO nanocomposites. RSC Adv 2017. [DOI: 10.1039/c7ra10223b] [Citation(s) in RCA: 63] [Impact Index Per Article: 9.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
In this work, we report Ni doped ZnO/poly(vinylidene fluoride-hexafluoropropylene) [PVDF-HFP] nanocomposites prepared by sandwiching and highlight their application in piezoelectric nano-generators.
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Affiliation(s)
| | | | - Mariam Al Ali AlMaadeed
- Materials Science & Technology Program (MATS)
- College of Arts & Sciences
- Qatar University
- Doha 2713
- Qatar
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