Article
Polymer Science
Nikruesong Tohluebaji, Chatchai Putson, Nantakan Muensit, Jureeporn Yuennan
Summary: This study investigates the electrostrictive and structural properties of P(VDF-HFP) nanofibers modified with conductive polymer polyaniline (PANI). The composite nanofibers showed uniform fibers without bead formation, with decreased water contact angle and increased dielectric properties and electromechanical response as the PANI content increased. The results suggest that P(VDF-HFP)/PANI composite nanofibers may offer a promising route for electrostrictive applications in actuation, MEMS, and sensors.
Article
Polymer Science
Amjad Albiladi, Lassaad Gzara, Hussam Organji, Nazeeha S. Alkayal, Alberto Figoli
Summary: The major challenge in membrane distillation (MD) is membrane wetting caused by pollutants. This study focused on fabricating hydrophobic membranes for brine treatment using electrospun PVDF-HFP nanofiber membranes. The effects of solvent composition and polymer concentration on the electrospinning process were investigated, and post-treatment was carried out to optimize membrane performance.
Article
Polymer Science
Yanzhou Lei, Yang Bai, You Shi, Mei Liang, Huawei Zou, Shengtai Zhou
Summary: In this study, a separated graphene nanoplatelets network structure was used to enhance the thermal and electrical conductivity of PVDF. The resulting PVDF/GNP composites exhibited high thermal and electrical conductivity, making them suitable for applications that require high electrical and heat dissipation.
JOURNAL OF POLYMER RESEARCH
(2022)
Article
Chemistry, Physical
Huijie Zhao, Zhao Wang, Yang Li, Mujie Yang
Summary: A new type of flexible humidity sensor with unique structure and good air permeability is studied in this work, which shows fast response and stability. The sensor can be used for real-time monitoring of human physiological activities, avoiding direct contact with human skin and offering great potential in practical applications.
JOURNAL OF COLLOID AND INTERFACE SCIENCE
(2022)
Article
Chemistry, Physical
Shichen Deng, Jiale Yuan, Yuli Lin, Xiaoxiang Yu, Dengke Ma, Yuwen Huang, Rencai Ji, Guangzu Zhang, Nuo Yang
Summary: Phonon engineering investigates heat transport modulation at the atomic scale, and a new method involving electric field modulation in ferroelectric polymers has been proposed. This method can significantly enhance the thermal conductivities of poly(vinylidene fluoride) by improving lattice order, inter-chain interaction, phonon velocity, and reducing phonon scattering. This study offers a novel modulation strategy with rapid response time and without the need for fillers.
Article
Materials Science, Multidisciplinary
Zhihao Gao, Rongyan Wen, Hua Deng, Lin Luo, Xiaochen Cui, Zhen Yang, Zongmin Zheng, Jianmin Zhang
Summary: In this study, the possibility of utilizing 2D nickel hydroxide nanosheets (NHNs) to prepare composite membranes was explored. The effect of NHNs on the properties of the membranes was investigated, and it was found that a low filler content led to improved thermal stability, crystallization behaviors, electrolyte affinity, and ionic conductivity. The composite membrane also demonstrated good cycling performance and rate capability in Li/LiFePO4 half-cells.
ACS APPLIED POLYMER MATERIALS
(2022)
Article
Materials Science, Multidisciplinary
Rosalin Rath, Piyush Kumar, Lakshmi Unnikrishnan, Smita Mohanty, Sanjay K. Nayak
Summary: This study successfully fabricated nanocomposite membranes with high ion exchange capacity and proton conductivity, suitable for fuel cell applications. The membranes demonstrated excellent conductivity at high temperatures, suppressed methanol crossover, and higher membrane selectivity compared to Nafion, suggesting their potential as an alternative in fuel cell applications.
MATERIALS CHEMISTRY AND PHYSICS
(2021)
Article
Chemistry, Applied
B. Hermenegildo, C. Ribeiro, N. Perinka, P. Martins, M. Trchova, M. Hajna, J. Stejskal, S. Lanceros-Mendez
Summary: Electrospun membranes with an active response play an important role in tissue regeneration by improving the ability to mimic the cellular microenvironment. This study developed PVDF electrospun fibers coated with PANI and PPy, which showed increased surface electrical conductivity and hydrophilicity while remaining biocompatible, resulting in slight enhancement in metabolic activity of L929 fibroblasts.
REACTIVE & FUNCTIONAL POLYMERS
(2022)
Review
Environmental Sciences
R. Suresh, Saravanan Rajendran, Lalitha Gnanasekaran, Pau Loke Show, Wei-Hsin Chen, Matias Soto-Moscoso
Summary: This review investigates the application of PVDF-based nanomembranes in the removal of synthetic dyes. Various methods, including surface coating and blending, were discussed for fabricating high performance PVDF-based nanomembranes. The incorporation of nanomaterials such as metal compounds, metals, (synthetic/bio)polymers, metal organic frameworks, carbon materials and their composites in PVDF membranes to enhance their performance was also explored. The impact of nanomaterials on the surface features, mechanical strength, hydrophilicity, crystallinity, and catalytic ability of PVDF membranes was discussed, along with future research directions.
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
Chemistry, Multidisciplinary
O. Prakash, S. Bihari, Keshav, S. Tiwari, R. Prakash, P. Maiti
Summary: The study successfully synthesized an anionic membrane based on PVDF, with good chemical grafting properties and structural transformation characteristics, suitable for electrolyte in alkaline fuel cells, and also exhibiting piezoelectricity, indicating the potential for a smart membrane in various technologies.
MATERIALS TODAY CHEMISTRY
(2022)
Review
Materials Science, Multidisciplinary
X. W. Wang, J. T. Fan, M. Manikandan, B. H. Zhang, J. N. Guo, J. Y. Chen, F. Yang, M. M. Zheng, H. X. Zhang, M. Z. Hou, Y. X. Fu, S. Y. Shang, Y. C. Hu, J. Shang, S. Q. Yin
Summary: This paper reviews the important aspects and recent progress of poly (vinylidene fluoride)-based composites with lead-free ferroelectric ceramics for high energy density capacitors. It discusses the comprehensive effects of filler shape, core-shell structure, layered structure, and interface effect on the dielectric properties, breakdown strength, and energy density of the composites.
JOURNAL OF MATERIALS SCIENCE
(2023)
Article
Materials Science, Multidisciplinary
Mandeep Jangra, Siddhartha Dam, Abhishek Thakur, Shamima Hussain
Summary: The study involved the deposition of free-standing, flexible composite films of PVDF/PEDOT:PSS, with increasing conductivity observed with higher additive concentrations. The conductivity of the composite films varied with temperature, showing semiconducting behavior, and followed the Mott Variable Range Hopping model of conduction.
Article
Polymer Science
Shan Wang, Chun-Yan Tang, Jin Jia, Xiang-Jun Zha, Jun-Hong Liu, Xing Zhao, Kai Ke, Yu Wang, Wei Yang
Summary: We report a method to fabricate high-performance piezoelectric polymer fiber mats by collecting electrospun PVDF fibers using low-temperature electrolytes. The use of liquid electrolytes enables the formation of piezoelectric PVDF crystals with zigzag conformation and the immobilization of aligned dipoles at low temperature. Compared with conventional PVDF fibers, these fiber mats can generate a significantly higher open-circuit voltage and instantaneous output power density, making them suitable for self-powered flexible electronics.
Article
Materials Science, Composites
Joffre Luis Brito Guaricela, Carlos Henrique Ahrens, Guilherme Mariz de Oliveira Barra, Claudia Merlini
Summary: The study found that adding carbon black to the PVDF matrix can improve the mechanical properties of the composite, but exceeding a certain fraction can decrease these properties. Additionally, adding 0.5 wt% of carbon black can significantly increase the electrical conductivity of the composite. Therefore, PVDF/CB composites show potential as raw materials for producing functional components in the SLS process.
POLYMER COMPOSITES
(2021)