Versatile Strategy for Electrophoretic Deposition of Polyvinylidene Fluoride-Metal Oxide Nanocomposites

Polyvinylidene fluoride (PVDF) is an advanced functional polymer which exhibits excellent chemical and thermal stability, and good mechanical, piezoelectric and ferroelectic properties. This work opens a new strategy for the fabrication of nanocomposites, combining the functional properties of PVDF and advanced inorganic nanomaterials. Electrophoretic deposition (EPD) has been developed for the fabrication of films containing PVDF and nanoparticles of TiO2, MnO2 and NiFe2O4. An important finding was the feasibility of EPD of electrically neutral PVDF and inorganic nanoparticles using caffeic acid (CA) and catechol violet (CV) as co-dispersants. The experiments revealed strong adsorption of CA and CV on PVDF and inorganic nanoparticles, which involved different mechanisms and facilitated particle dispersion, charging and deposition. The analysis of the deposition yield data, chemical structure of the dispersants and the microstructure and composition of the films provided an insight into the adsorption and dispersion mechanisms and the influence of deposition conditions on the deposition rate, film microstructure and composition. PVDF films provided the corrosion protection of stainless steel. Overcoming the limitations of other techniques, this investigation demonstrates a conceptually new approach for the fabrication of PVDF-NiFe2O4 films, which showed superparamagnetic properties. The approach developed in this investigation offers versatile strategies for the EPD of advanced organic-inorganic nanocomposites.

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Review of Current and Emerging Approaches for Quantitative Nanostructure-Activity Relationship Modeling

Materials Science and Engineering ◽

10.4018/978-1-5225-1798-6.ch070 ◽

2017 ◽

pp. 1704-1721 ◽

Cited By ~ 1

Author(s):

Natalia Sizochenko ◽

Jerzy Leszczynski

Keyword(s):

Critical Analysis ◽

Inorganic Nanoparticles ◽

Quantitative Structure ◽

Future Perspectives ◽

Qsar Modeling ◽

Advantages And Disadvantages ◽

Structure Activity ◽

Inorganic Nanomaterials ◽

Toxicity Mechanisms ◽

Statistical Approaches

Quantitative structure-activity/property relationships (QSAR/QSPR) approaches that have been applied with success in a number of studies are currently used as indispensable tools in the computational analysis of nanomaterials. Evolution of nano-QSAR methodology to the ranks of novel field of knowledge has resulted in the development of new so-called “nano-descriptors” and extension of the statistical approaches domain. This brief review focuses on the critical analysis of advantages and disadvantages of existing methods of nanoparticles' representation and their analysis in framework of structure-activity relationships. It summarizes recent QSAR/QSPR studies on inorganic nanomaterials. Here the authors describe practices for the QSAR modeling of inorganic nanoparticles, existing datasets, and discuss applicable descriptors and future perspectives of this field. About 50 different (Q)SAR/SPR models for inorganic nanomaterials have been developed during the past 5 years. An analysis of these peer reviewed publications shows that the most popular property of nanoparticles modeled via QSAR is their toxicity towards different bacteria, cell lines, and microorganisms. It has been clearly shown how nano-QSAR can contribute to the elucidation of toxicity mechanisms and different physical properties of inorganic nanomaterials.

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Recent advances in inorganic nanomaterials for wound-healing applications

Biomaterials Science ◽

10.1039/c9bm00423h ◽

2019 ◽

Vol 7 (7) ◽

pp. 2652-2674 ◽

Cited By ~ 30

Author(s):

Susheel Kumar Nethi ◽

Sourav Das ◽

Chitta Ranjan Patra ◽

Sudip Mukherjee

Keyword(s):

Wound Healing ◽

Tissue Regeneration ◽

Clinical Status ◽

Review Article ◽

Inorganic Nanoparticles ◽

Future Directions ◽

Recent Advances ◽

Inorganic Nanomaterials

The emergence of inorganic nanoparticles has generated considerable expectation for solving various biomedical issues including wound healing and tissue regeneration. This review article highlights the role and recent advancements of inorganic nanoparticles for wound healing and tissue regeneration along with their advantages, clinical status, challenges and future directions.

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Electrophoretic deposition of organic–inorganic nanocomposites

Journal of Materials Science ◽

10.1007/s10853-006-0994-7 ◽

2006 ◽

Vol 41 (24) ◽

pp. 8186-8195 ◽

Cited By ~ 68

Author(s):

I. Zhitomirsky

Keyword(s):

Electrophoretic Deposition ◽

Inorganic Nanocomposites

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Different Morphology of Hydroxyapatite Coatings on Titanium by Electrophoretic Deposition

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.309-311.639 ◽

2006 ◽

Vol 309-311 ◽

pp. 639-642 ◽

Cited By ~ 9

Author(s):

Xian Wei Meng ◽

Tae Yub Kwon ◽

Kyo Han Kim

Keyword(s):

Electrophoretic Deposition ◽

Hydroxyapatite Coating ◽

Applied Potential ◽

Experimental Conditions ◽

Powder Concentration ◽

Hydroxyapatite Coatings ◽

Deposition Yield ◽

Coating Morphology ◽

Titanium Substrates

Commercial hydroxyapatite powders were electrophoretically deposited on titanium substrates. In this study, the effect of deposition durations and applied voltages on deposition yield was investigated. Green and sintered coatings were studied by SEM and XRD. It was observed that by applying low voltages and presedimentation, uniform and smooth hydroxyapatite coating can be prepared. In order to obtain roughened hydroxyapatite coatings, high voltages have to be applied. It was concluded that experimental conditions of powder concentration, applied potential, and presedimentation have a significant effect on the deposited coating morphology.

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Synthesis and Surface Engineering of Inorganic Nanomaterials Based on Microfluidic Technology

Nanomaterials ◽

10.3390/nano10061177 ◽

2020 ◽

Vol 10 (6) ◽

pp. 1177

Author(s):

Jie Shen ◽

Muhammad Shafiq ◽

Ming Ma ◽

Hangrong Chen

Keyword(s):

Surface Engineering ◽

Inorganic Nanoparticles ◽

Research Progress ◽

Great Promise ◽

Synthesis Methods ◽

Functional Nanoparticles ◽

Metal Metal ◽

Metal Organic ◽

Microstructure Morphology ◽

Inorganic Nanomaterials

The controlled synthesis and surface engineering of inorganic nanomaterials hold great promise for the design of functional nanoparticles for a variety of applications, such as drug delivery, bioimaging, biosensing, and catalysis. However, owing to the inadequate and unstable mass/heat transfer, conventional bulk synthesis methods often result in the poor uniformity of nanoparticles, in terms of microstructure, morphology, and physicochemical properties. Microfluidic technologies with advantageous features, such as precise fluid control and rapid microscale mixing, have gathered the widespread attention of the research community for the fabrication and engineering of nanomaterials, which effectively overcome the aforementioned shortcomings of conventional bench methods. This review summarizes the latest research progress in the microfluidic fabrication of different types of inorganic nanomaterials, including silica, metal, metal oxides, metal organic frameworks, and quantum dots. In addition, the surface modification strategies of nonporous and porous inorganic nanoparticles based on microfluidic method are also introduced. We also provide the readers with an insight on the red blocks and prospects of microfluidic approaches, for designing the next generation of inorganic nanomaterials.

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Synthesis and Characterization of Resorcinarene-Encapsulated Nanoparticles

MRS Proceedings ◽

10.1557/proc-581-59 ◽

1999 ◽

Vol 581 ◽

Cited By ~ 10

Author(s):

Alexander Wei ◽

Kevin B. Stavens ◽

Stephen V. Pusztay ◽

Ronald P. Andres

Keyword(s):

Au Nanoparticles ◽

Surface Enhanced Raman Spectroscopy ◽

Inorganic Nanoparticles ◽

Transmission Electron ◽

Surface Enhanced ◽

New Strategy ◽

Surface Enhanced Raman ◽

20 Nm ◽

Encapsulated Nanoparticles

ABSTRACTA new strategy for stabilizing inorganic nanoparticles in nonpolar solutions is described. Resorcinarenes 1-3 were synthesized and evaluated as surfactants because of their large concave headgroups with multiple contact sites. Au nanoparticles ranging from 3-20 nm in diameter were generated in the vapor phase and dispersed into dilute hydrocarbon solutions of 1-3, where they were stabilized for up to several months. Chemisorption is most likely mediated by multiple Au-O interactions, as indicated by several control experiments and by surface-enhanced Raman spectroscopy. The resorcinarenes were readily displaced by dodecanethiol, which resulted in the precipitation of particles >5 nm as determined by absorption spectroscopy and transmission electron microscopy. This suggests that the mobility of the resorcinarene tailgroups are important for maintaining the larger nanoparticles in a dispersed state. Resorcinarene surfactants with stronger chemisorptive properties are currently being explored.

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Electrophoretic Deposition of Organic - Inorganic Composites for Biomedical Applications

Materials Science Forum ◽

10.4028/www.scientific.net/msf.706-709.617 ◽

2012 ◽

Vol 706-709 ◽

pp. 617-622

Author(s):

Rong Ma ◽

Igor Zhitomirsky

Keyword(s):

Electrophoretic Deposition ◽

Biomedical Applications ◽

Room Temperature ◽

Deposition Time ◽

Composite Films ◽

Deposition Method ◽

X Ray Diffraction ◽

X Ray ◽

Inorganic Composites ◽

Deposition Yield

Electrophoretic deposition method has been developed for the fabrication of organic-inorganic composite films, containing bioglass and hydroxyapatite in a hyaluronic acid matrix. The film composition and deposition yield were varied by variation of the electrochemical bath composition and deposition time. The films were studied by scanning electron microscopy, thermogravimetric analysis and X-ray diffraction methods. The deposition method offers the advantages of room temperature processing and allows the fabrication of composite films for biomedical applications.

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Preparation and Characterization of PVDF-DMAc-Nano SiO2 Distillation Membrane

Advanced Materials Research ◽

10.4028/www.scientific.net/amr.1133.561 ◽

2016 ◽

Vol 1133 ◽

pp. 561-565

Author(s):

Azlin Hamidi ◽

Wan Dung Teng ◽

Saifollah Abdullah

Keyword(s):

Mechanical Strength ◽

Polyvinylidene Fluoride ◽

Chemical Resistance ◽

Sio2 Nanoparticles ◽

Inorganic Nanoparticles ◽

Angle Measurements ◽

Atomic Force ◽

Contact Angle Measurements ◽

High Chemical Resistance

Polyvinylidene fluoride (PVDF) membranes were prepared with different compositions of SiO2 nanoparticles. PVDF is one of the most widely used in membrane technology. The molecular structure of PVDF fluoropolymer provides high chemical resistance, good mechanical properties and thermal stability. It also can be used as composites with inorganic nanoparticles such as SiO2 to improve the performance and properties of the membrane. In this study, Dimethylacetamide (DMAc) was used as solvent. The prepared membranes were characterized using contact angle measurements with water, atomic force microscope (AFM) and scanning electron microscope (SEM) for the structures of the membranes and mechanical strength. The experimental results showed that additional of nanoSiO2 will exhibit different characteristic on the microstructure and mechanical strength of the membrane.

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Study of the Electrophoretic Deposition of Chitosan/Halloysite Nanotubes/Titanium Dioxide Composite Coatings Using Taguchi Experimental Design Approach

Key Engineering Materials ◽

10.4028/www.scientific.net/kem.654.230 ◽

2015 ◽

Vol 654 ◽

pp. 230-239 ◽

Cited By ~ 6

Author(s):

Namir S. Jackoub Raddaha ◽

Sigrid Seuss ◽

Aldo R. Boccaccini

Keyword(s):

Titanium Dioxide ◽

Electrophoretic Deposition ◽

Applied Voltage ◽

Deposition Time ◽

Composite Coatings ◽

Halloysite Nanotubes ◽

Partial Least Square ◽

Halloysite Nanotube ◽

Taguchi Design Of Experiments ◽

Deposition Yield

This study presents experimental results on the electrophoretic deposition (EPD) of chitosan/halloysite nanotube/titanium dioxide composite coatings based on the Taguchi design of experiments (DOE) approach. Taguchi array of L18type with mixed levels of the control factor was used to study the influence of EPD parameters, including halloysite nanotubes concentration, electric voltage and deposition time, on deposition yield. For identifying the significant factors that affected the deposition yield, multivariate analysis of variance (MANOVA) and regression analysis based on partial least-square method were used. The coatings were investigated by scanning electron microscopy (SEM), X-ray diffraction (XRD) and Fourier transform infrared (FTIR) spectroscopy analyses, respectively. It was found that the deposition time has significantly influenced the deposition rate but the halloysite nanotube concentration and the applied voltage have the smallest effect on the deposition. The optimum condition for high yield of deposition with low standard deviation is achieved when the concentration of halloysite nanotubes is 0.3 g/L and the applied voltage is 40 volt with 300 sec. as a deposition time. The predicted EPD conditions were verified by experiments and qualitative agreement was obtained.

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