Article
Environmental Sciences
Mansour Alhoshan, Arun Kumar Shukla, Javed Alam
Summary: In this study, Zn-MOF nanoparticles were incorporated into PVDF-co-HFP polymer to fabricate Zn-MOF/PVDF-co-HFP nanocomposite ultrafiltration membranes. The nanocomposite membranes exhibited improved surface characteristics, higher water permeability, and excellent antifouling performance.
WATER AIR AND SOIL POLLUTION
(2023)
Article
Nanoscience & Nanotechnology
Jiale Fang, Chengqi Chen, Hongxing Qi, Jie Zhang, Xiaoxuan Hou, Likun Pan, Xianghui Wang
Summary: Developing flexible electromagnetic interference (EMI SE) shielding materials is crucial for protecting humans from harmful radiation. We designed and fabricated a flexible multilayer structure of PVDF/GNP-PVDF composite film, which exhibited high EMI SE performance (averaging 69.7 dB in X-band), excellent flexibility, and stability (98.85% retention after bending 1000 cycles at 60 degrees). The theoretical study indicates that the multiple reflection and absorption of electromagnetic waves between layers contribute to the high EMI SE performance of the PVDF/GNP-PVDF multilayer film.
ACS APPLIED NANO MATERIALS
(2023)
Article
Materials Science, Composites
Yu'an Bai, Xinyi Wei, Dongxing Dun, Shijian Bai, Hongfu Zhou, Bianying Wen, Xiangdong Wang, Jing Hu
Summary: Driven by the demands in mobile electronics, aerospace and military, this study developed quaternary nanocomposite foams with lightweight, good environmental stability and efficient electromagnetic interference (EMI) shielding properties through melt blending and supercritical CO2 foaming technology. The nanocomposites showed significant improvements in crystallization temperature, storage modulus, complex viscosity, and EMI shielding effectiveness compared to pure PVDF. This study provides a promising approach for the fabrication of materials with adjustable EMI shielding property in the electronics and aerospace industries.
POLYMER COMPOSITES
(2023)
Article
Chemistry, Multidisciplinary
Chenchen Wang, Yang Zhang, Bowen Zhang, Bo Wang, Jinxi Zhang, Long-Qing Chen, Qiming Zhang, Zhong Lin Wang, Kailiang Ren
Summary: Flexoelectricity-induced flexophotovoltaic effect has been demonstrated in a KNN/PVDF-TrFE nanocomposite, significantly enhancing the photovoltaic current. The curved K/P-20 composite shows a 13.9% increase in the photovoltaic current compared to the flat nanocomposite, indicating great potential for PVDF-based nanocomposites in ferroelectric memory device applications.
Article
Chemistry, Physical
Dong Je Han, Seonwoo Kim, Hyeon Jun Heo, Chaewon Jin, Jin-young Kim, Hongsoo Choi, In Jun Park, Hong Suk Kang, Sang Goo Lee, Jong-Chan Lee, Eun-Ho Sohn
Summary: Antimicrobial PVDF-based polymers were prepared by grafting quaternary ammonium or quaternary pyridinium monomers to effectively kill bacteria and yeast. Adding these polymers to PVDF films through blending method enhanced both mechanical properties and antimicrobial performances, while maintaining biocompatibility.
APPLIED SURFACE SCIENCE
(2021)
Article
Chemistry, Inorganic & Nuclear
Subramaniyan Vinoth, Sea-Fue Wang
Summary: The BaTiO3/PVDF nanocomposite prepared by cold sintering process showed good sintering density and microwave dielectric properties at low temperature, making it a promising candidate for microwave dielectric applications.
INORGANIC CHEMISTRY
(2023)
Article
Chemistry, Physical
Benjamin Cromwell, Mara Dubnicka, Lasanthi Sumathirathne, Angela Thach, William B. Euler
Summary: Membranes of PVDF and related polymers are used to decompose RhB under low power sonication, and the change in visible spectrum of RhB allows determination of rate constants for different polymer compositions and membrane thicknesses. The piezoelectric field generated by mechanical deformation of the polymer catalyzes the scission of the C-N bond in RhB. Doping PVDF with transition-metal nitrates increases the rate constants, but the analysis is complicated by concurrent RhB adsorption onto the membrane. A proposed mechanism suggests that the piezocatalytic effect of the membrane leads to heterolytic cleavage of the C-N bond followed by formation of a C-Cl bond on the new xanthene ring.
JOURNAL OF PHYSICAL CHEMISTRY C
(2023)
Article
Engineering, Chemical
Jun Pan, Lixun Zhang, Zhaohui Wang, Shi-Peng Sun, Zhaoliang Cui, Naser Tavajohi
Summary: Poly (vinylidene fluoride)-co-hexafluoropropylene membranes were prepared using acetyl tributyl citrate as a non-toxic diluent, with effects of polymer concentration on membrane properties investigated. Results showed that pore size and porosity decreased with increasing polymer concentration, while contact angle, liquid entry pressure, and mechanical properties increased. High salt rejection (>99.9%) was achieved in direct contact membrane distillation, with excellent long-term stability in permeate flux and salt rejection observed for the prepared membranes.
FRONTIERS OF CHEMICAL SCIENCE AND ENGINEERING
(2022)
Article
Engineering, Electrical & Electronic
Zan Lu, Li Yuan, Guozheng Liang, Aijuan Gu
Summary: An effective strategy of building novel multi-layered structure with gradient distribution and core-shell structure has been developed to enhance the energy density of poly(vinylidene fluoride-hexafluoropropylene) composites.
JOURNAL OF MATERIALS SCIENCE-MATERIALS IN ELECTRONICS
(2023)
Article
Materials Science, Multidisciplinary
Lucas Galhardo Pimenta Tienne, Ludmila da Silva Candido, Barbara de Salles Macena da Cruz, Fernanda Fabbri Gondim, Matheus Pereira Ribeiro, Renata Antoun Simao, Maria de Fatima Vieira Marques, Sergio Neves Monteiro
Summary: A new technique based on modified Hummer's method is proposed to synthesize high-purity reduced graphene oxide (rGO) with enhanced quality and low layer stacking. The technique incorporates comprehensive models to determine the number of stacked layers and respects the physical limitations involved. The rGO nanoparticles are successfully incorporated into PVDF nanocomposites, resulting in improved stability, thermal resistance, crystallinity, and water contact angle. The reinforcement effect of rGO enhances the ductility of the nanocomposites under cyclic loads. The results demonstrate the promising potential of rGO as a candidate material for ducts and oil pipelines.
JOURNAL OF MATERIALS RESEARCH AND TECHNOLOGY-JMR&T
(2022)
Article
Polymer Science
Ruru Wan, Xiaoli Sun, Zhongjie Ren, Haijun Wang, Huihui Li, Shouke Yan
Summary: Poly(vinylidene fluoride) (PVDF) films with polymorphic crystal structure were prepared and the effects of heat treatment on the crystal morphology and properties were studied. The results provide a useful way to induce the formation of polar PVDF phases.
Article
Polymer Science
Mahboube Mohamadi, Mortaza Aliasghary
Summary: The nonlinear nature of viscoelastic properties in polymeric materials makes it difficult to model and predict their dynamic mechanical responses. This study aims to establish a reliable model for predicting solid viscoelastic properties in PVDF/PEO blends and nanocomposites. The results show that an artificial intelligence network utilizing the ANFIS method has superior performance in predicting properties of high-performance materials.
Article
Nanoscience & Nanotechnology
Qingqing Li, Jinghua Zhao, Baosheng He, Zhijun Hu
Summary: PVDF, a ferroelectric polymer with the polar beta-phase, has the highest dipolar moment and piezoelectric response. The development of flexible electronics highly requires effective methods for producing beta-PVDF.
Article
Chemistry, Physical
Seyed Mohsen Seraji, Xing Jin, Zhifeng Yi, Chunfang Feng, Nisa V. Salim
Summary: This study demonstrates the crystalline transformation of PVDF influences aerogel formation and compressible sensing properties of a graphene composite. The fabricated PVDF/graphene foams and aerogels show high sensitivity and improved compressive strength. The results provide new pathways for fabricating porous composites with lighter density and high mechanical and electrical properties.
Article
Materials Science, Characterization & Testing
Insun Woo, Jong In Lee, Dong Je Han, Dong-Heon Han, Seung-Ju Oh, Jae Uk Yoon, Soon-Mok Choi, Eun-Ho Sohn, Jin Woo Bae
Summary: To solve the problem of bacterial growth on PVDF surfaces, pyridinium group grafted-PVDF (Pyd-PVDF) was added to PVDF to prepare antibacterial materials. The antibacterial PVDF-based blends were prepared by melt-blending of PVDF and Pyd-PVDF, and their structural, thermal, mechanical, and antibacterial properties were characterized. The impact strengths and elongations of the blends increased with increasing Pyd-PVDF concentration, while the flexural moduli and tensile strengths slightly decreased.
Article
Materials Science, Ceramics
Hari Singh, Saurabh Kumar Sharma, P. K. Kulriya
Summary: The cubic phasic CeO2-ZrO2 system with Ce0.8Zr0.2O2 composition was synthesized at room temperature. Highly dense pellets were obtained and analyzed using X-ray diffraction and electron microscopy. The structural damage caused by irradiation with 100 MeV I7+ ions was investigated through diffraction patterns. The results revealed the damaged regions and provided insights into the structural properties of the CeO2-ZrO2 system.
CERAMICS INTERNATIONAL
(2023)
Article
Nanoscience & Nanotechnology
Abid Hussain, S. A. Khan, Sandeep K. Sharma, Kathi Sudarshan, Saurabh K. Sharma, Chetan Singh, P. K. Kulriya
Summary: The role of irradiation-induced defects and microstructure evolution on the structural and mechanical properties of a single-phase face-centered cubic structured high-entropy alloy (HEA) was investigated. The results showed that the HEA remained structurally stable even under high ion fluence, with anomalous reduction in lattice constant and micro-strain relaxation observed at the initial fluence. The mechanical properties of the HEA exhibited an increase in hardness at lower fluence and a slight reduction at higher fluence.
MATERIALS SCIENCE AND ENGINEERING A-STRUCTURAL MATERIALS PROPERTIES MICROSTRUCTURE AND PROCESSING
(2023)
Article
Energy & Fuels
Atish Kumar Sharma, Ankita Srivastava, Prakash Kumar Jha, Rakesh Kumar, Manish Kumar, Pawan Kumar Kulriya, Nitesh K. Chourasia, Ritesh Kumar Chourasia
Summary: This study illustrates the role of bulk/interface defects in the performance of a novel solar cell structure. A theoretical model is developed to calculate important parameters and analyze the impact of defects on the solar cell. Various simulation parameters, including bulk defects, interfacial defects, emitter layer thickness, and window layer thickness, are optimized to improve solar cell performance. Based on the simulation results, it is found that the proposed solar cell can achieve high efficiency, fill factor, open circuit voltage, and short circuit current.
Article
Nanoscience & Nanotechnology
Shivam Tiwari, Anupama Devi, Dipesh Kumar Dubey, Pralay Maiti
Summary: A flexible and easily processable polymer composite is developed from naturally occurring piezoelectric materials for efficient energy-harvesting applications. The induced electroactive phases in tomato peel (TP)-and cotton (CTN)-based poly(vinylidene fluoride) (PVDF) composites have been explored through structural, thermal, and morphological analyses. The CTN-based composite shows higher output voltage and current compared to the TP-based composites due to significant induction of the piezoelectric phase in the presence of suitable electroactive cotton, demonstrating its potential as an efficient and sustainable biomechanical energy harvester.
ACS APPLIED BIO MATERIALS
(2023)
Article
Nanoscience & Nanotechnology
Manojit Das, Arijit Jana, Rajat Mishra, Swapan Maity, Pralay Maiti, Sushanta Kumar Panda, Rahul Mitra, Amit Arora, Peter Samora Owuor, Chandra Sekhar Tiwary
Summary: Direct ink writing (DIW) additive manufacturing is a versatile 3D printing technique that can print a variety of materials with well-engineered ink. DIW has great potential in tissue engineering for repairing and regenerating deformed or missing organs or tissues.
ACS APPLIED BIO MATERIALS
(2023)
Article
Instruments & Instrumentation
Hiroshi Amekura, Saif Ahmad Khan, Pawan Kumar Kulriya, Debdulal Kabiraj
Summary: The elongation efficiency of vanadium nanoparticles in SiO2 was found to increase at higher irradiation temperatures, suggesting that temperature does not significantly affect the shape deformation of the nanoparticles. This finding challenges the previous assumption that the ion hammering effect is the main cause of shape elongation in metal nanoparticles.
QUANTUM BEAM SCIENCE
(2023)
Article
Thermodynamics
Shivam Tiwari, Dipesh Kumar Dubey, Om Prakash, Santanu Das, Pralay Maiti
Summary: Carbon nanofibers (CNF) have been functionalized to enhance their surface property and applied in energy harvesting applications. Electrospun composite fibers with electroactive filler show improved properties compared to the pristine poly(vinylidene fluoride) (PVDF), and computational studies analyze the role of structural conformations and the effect of the filler. The device developed from the electrospun scaffold demonstrates high efficiency in generating output voltage and current through different modes, attributed to the mechanistic pathway of charge generation and transformation of non-piezo to piezo-active parts.
Review
Energy & Fuels
Sunil Kumar, Pralay Maiti
Summary: This review focuses on functional polymers for electrolytes, the interface between photosensitizers and polymers, thermodynamic interactions, and power conversion efficiencies of third generation (3G) photovoltaic devices. Functional polymers offer a potential avenue for the development of stable and efficient photovoltaic reactions at low cost based on dyes, quantum dots, and perovskite-sensitized solar conversion systems.
Review
Chemistry, Physical
Abid Hussain, R. S. Dhaka, Ho Jin Ryu, Saurabh Kumar Sharma, Pawan Kumar Kulriya
Summary: This article reviews the recent development in the understanding of design parameters, mechanical properties, and radiation stability-based classification of single-phase high entropy alloys (HEAs). HEAs are proposed as potential candidates for structural materials in generation-IV nuclear reactors due to their excellent radiation tolerance. Theoretical calculations and experimental studies show that phase stability and elemental distribution in solid solution depend on various factors. Heavy ion irradiation investigations confirm the importance of alloy composition, chemical nature, and size of alloying elements in determining the response to irradiation. The article also discusses the effects of irradiation temperature, alloy types, and microstructure on phase stability, radiation-induced segregation, and bubble formation in HEAs. Finally, the improvement in structural stability in high-temperature radiation environments and the applicability of HEAs as structural materials in nuclear reactor systems are reviewed.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Article
Physics, Applied
Vivek Kumar, Saurabh Kumar Sharma, Yogendar Singh, Sanjay Kumar Kedia, R. C. Meena, Vinita Grover, P. K. Kulriya
Summary: This study investigates the structural stability and defect generation of the CeO2-ZrO2 system under high doses of irradiation. The results show that Ce0.8Zr0.2O2 exhibits good radiation tolerance but still generates point defects. Grain boundaries play an important role in defect trapping, and grain size increases due to defect accumulation.
JOURNAL OF APPLIED PHYSICS
(2023)
Article
Materials Science, Ceramics
Saurabh Kumar Sharma, Vinita Grover, Rakesh Shukla, Abid Hussain, Ambuj Mishra, Pawan Kumar Kulriya
Summary: In this study, the disordering caused by swift heavy ion irradiation in two different compositions of pyrochlore structures was investigated. X-ray diffraction, Raman spectroscopy, and high-resolution transmission electron microscopy were used to analyze the samples before and after irradiation. It was found that both compositions underwent amorphization due to irradiation, with a slower rate observed in Nd1.8Zr2.2O7.1. The irradiation-induced modified track region in Nd1.8Zr2.2O7.1 consisted of defect-rich pyrochlore structure, anion-deficient fluorite structure, and amorphous domains.
JOURNAL OF THE AMERICAN CERAMIC SOCIETY
(2024)
Article
Chemistry, Multidisciplinary
Neelam Gupta, Swapan Maity, Anamika, Ravi Prakash Behere, Prabhash Mahata, Biswajit Maiti, Pralay Maiti, Biplab Kumar Kuila
Summary: In this study, two soluble and highly fluorescent triazine-based conjugated polymer networks (TCPNs) were synthesized by conjugating a thiophene unit with a triazine ring through a phenyl linker. The effect of introducing alkyl and oligoethylene glycol side chains on the TCPNs' solubility, optical properties, conductivity, and biological activities was investigated. Additionally, non-oxidative doping of the TCPNs was achieved through the reaction with a Lewis acid, leading to significant optical switching and conductivity changes. These TCPNs also demonstrated stability and gelation after doping, and exhibited abilities for fluorescence imaging and cancer cell inhibition. This study highlights the potential applications of triazine-based conjugated polymer networks in electronic, optoelectronic, cell imaging, and chemotherapeutic fields.
NEW JOURNAL OF CHEMISTRY
(2023)
Article
Chemistry, Physical
Kailash Chandra, Vinod Singh, Saurabh K. Sharma, Pawan K. Kulriya
Summary: By partially replacing Ho3+ with nonmagnetic La3+ in Ho2-xLaxTi2O7 compound, the magnetic and structural behavior was investigated. The study revealed that La doping induces structural ordering and increases the lattice parameter, while weakening the ferromagnetic properties of the compound.
JOURNAL OF ALLOYS AND COMPOUNDS
(2023)
Review
Medicine, Research & Experimental
Swikriti Tripathi, Subham Shekhar Mandal, Sudepta Bauri, Pralay Maiti
Summary: 3D bioprinting is an emerging innovative technology that combines engineering, manufacturing, art, education, and medicine to revolutionize biomedical applications. It involves incorporating cells with biocompatible materials to create tissue or organ models for in vivo applications. However, there are challenges related to material selection, cell types, and their growth and differentiation factors.
Review
Nanoscience & Nanotechnology
Sudepta Bauri, Swikriti Tripathi, Avishek Mallick Choudhury, Subham Sekhar Mandal, Hans Raj, Pralay Maiti
Summary: The concept of theranostics is groundbreaking in cancer remedy as it combines therapeutic and diagnostic elements in one approach. Nanocarriers play a vital role in this method, but also face various challenges. Different nanomaterials have been integrated to enhance the therapeutic efficacy and diagnostic ability.
ACS APPLIED NANO MATERIALS
(2023)
