نتایج جستجو برای: غشاء pvdf

تعداد نتایج: 4233  

Journal: :Coatings 2022

The current study investigated the fabrication of multi-walled carbon nanotubes (MWCNTs) adhering to Barium titanate (BaTiO3) nanoparticles and poly(vinylidene fluoride) (PVDF) nanocomposites, as well impact MWCNT on PVDF-BaTiO3 matrix in terms dielectric constant loss with a view develop high performance piezoelectric energy harvester future. capacity potential as-prepared nanocomposite films ...

2016
Rui Li Liu Zhang Zhiliang Shi Jianzhong Pei

PZT-Poly(vinylidene fluoride) composites were prepared by hot-pressing method. Before addition, PZT particles were firstly modified with two different coupling agents. The micromorphology, microstructure, dielectric properties, and piezoelectric properties of the composites were characterized and investigated. Results indicated that PZT particles were homogeneously dispersed in the PVDF matrix ...

2010
Rocky R. Reston Edward S. Kolesar

A robotic tactile sensor comprised of 25 discrete sensor electrodes arranged in a 5x5 grid was designed and fabricated from a piezoelectric polyvinylidene fluoride (PVDF) film coupled to an integrated circuit (IC). Each of the 25 sensing electrodes in the IC grid were connected to metal-oxidesemiconductor field effect transistor (MOSFET) amplifiers which provided sufficient gain to generate usa...

2011
Kamlesh Pandey Mrigank Mauli Dwivedi Nidhi Asthana Markandey Singh Shanker Lal Agrawal

In order to obtain highly conductive polymer gel electrolytes for electrochemical devices, Poly (vinylidene fluoride) (PVdF) based gel electrolytes, namely, (100–x)PVdF + xNH4SCN electrolyte system has been synthesized by solution cast technique and characterized by XRD, DSC, IR, SEM and electrical measurements. IR study of gel electrolytes shows interaction of PVdF matrix and dopant salt with ...

2016
Nurul Hayati Idris Md. Mokhlesur Rahman Jia-Zhao Wang Hua-Kun Liu

Microporous poly(vinylidene fluoride)/poly(methyl methacrylate) (PVDF/PMMA) membranes were prepared using the phase-separation method. Then, the membranes were immersed in liquid electrolyte to form polymer electrolytes. The effects of PMMA on the morphology, degree of crystallinity, porosity, and electrolyte uptake of the PVDF membrane were studied. The addition of PMMA increased the pore size...

2014
Yiwei Liu Baomin Wang Qingfeng Zhan Zhenhua Tang Huali Yang Gang Liu Zhenghu Zuo Xiaoshan Zhang Yali Xie Xiaojian Zhu Bin Chen Junling Wang Run-Wei Li

The magnetic anisotropy is decreased with increasing temperature in normal magnetic materials, which is harmful to the thermal stability of magnetic devices. Here, we report the realization of positive temperature coefficient of magnetic anisotropy in a novel composite combining β-phase polyvinylidene fluoride (PVDF) with magnetostrictive materials (magnetostrictive film/PVDF bilayer structure)...

Journal: :Physical chemistry chemical physics : PCCP 2015
Hui Li Wei Chen Yuanhui Sun Xuri Huang Guangtao Yu

On the basis of first-principle computations, we first propose a simple and effective strategy through surface-adsorbing a poly(vinylidene fluoride) (PVDF) polymer via noncovalent interactions to tune the electronic and magnetic behaviors of zigzag SiC nanoribbons (zSiCNRs). It is revealed that depositing the strong electron-withdrawing PVDF polymer with a permanent dipole moment can induce the...

2012
K. H. Shobana K. S. Radha D. Mohan

Polyvinyledenefluoride–polystyrene (PVDF/PS) blend ultrafiltration membranes were prepared using phase inversion technique. Casting solutions were prepared with different compositions of polyvinylidene fluoride (PVDF) and polystyrene (PS) both in the presence and absence of the additive, polyvinylpyrolidone (PVP) using dimethylacetamide as solvent. The effects of compositions of PS and concentr...

2013
M. Alessandri L. Calzà V. Colombo L. S. Dolci A. Fiorani D. Fabiani E. Ghedini M. Gherardi C. Gualandi A. Liguori S. D. Quiroga

Atmospheric pressure non equilibrium plasma treatments have been implemented to produce solvent-free Poly-L-lactic acid (PLLA) scaffolds, to improve biocompatibility of PLLA mats and to increase electrolyte uptake of Poly(vinylidene fluoride) (PVDF) separators for lithium batteries. It has been observed that plasma treatments are a suitable way to improve polymeric solution electrospinnability,...

Journal: :International Journal of Energy Research 2023

In order to meet the growing demand for sustainable and renewable energy, significant processes have been achieved in energy harvesting field recent years. Due its strong polarity property superior mechanical characteristics, polyvinylidene fluoride (PVDF) serves as most attractive material a liquid-solid triboelectric nanogenerator (LS-TENG). PVDF-based TENG has come long way thus far. Hence, ...

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