Electrical properties of colloidal polyaniline-2-naphthalene sulfonic acid/graphene nanoparticle composite films

2013 ◽  
Vol 35 (1) ◽  
pp. 60-67 ◽  
Author(s):  
C. Basavaraja ◽  
Kwang Il Kim ◽  
Gyu Ho Jung ◽  
Do Sung Huh
Keyword(s):  
Electrical Properties ◽  
Sulfonic Acid ◽  
Composite Films ◽  
Naphthalene Sulfonic Acid

Studies on the Electrical Properties of Graphene Oxide-Reinforced Poly (4-Styrene Sulfonic Acid) and Polyvinyl Alcohol Blend Composites

2017 ◽  
Vol 17 (01n02) ◽  
pp. 1760005 ◽  
Author(s):  
Kalim Deshmukh ◽  
Sowmya Sankaran ◽  
M. Basheer Ahamed ◽  
S. K. Khadheer Pasha ◽  
Kishor Kumar Sadasivuni ◽  
...  
Keyword(s):  
Graphene Oxide ◽  
Electrical Properties ◽  
Polyvinyl Alcohol ◽  
Sulfonic Acid ◽  
Composite Films ◽  
Frequency Range ◽  
Impedance Analyzer ◽  
Morphological Studies ◽  
Styrene Sulfonic Acid ◽  
Properties Of Composites

In the present study, graphene oxide (GO)-reinforced poly (4-styrenesulfonic acid) (PSSA)/polyvinyl alcohol (PVA) blend composite films were prepared using colloidal blending technique at various concentrations of GO (0–3[Formula: see text]wt.%). The morphological investigations of the prepared composites were carried out using polarized optical microscopy and scanning electron microscopy. The electrical properties of composites were evaluated using an impedance analyzer in the frequency range 50[Formula: see text]Hz to 20[Formula: see text]MHz and temperature in the range 40–150[Formula: see text]C. Morphological studies infer that GO was homogeneously dispersed in the PSSA/PVA blend matrix. Investigations of electrical property indicate that the incorporation of GO into PSSA/PVA blend matrix resulted in the enhancement of the impedance ([Formula: see text] and the quality factor ([Formula: see text]-factor) values. A maximum impedance of about 4.32[Formula: see text][Formula: see text][Formula: see text]10[Formula: see text] was observed at 50[Formula: see text]Hz and 90[Formula: see text]C for PSSA/PVA/GO composites with 3[Formula: see text]wt.% GO loading. The [Formula: see text]-factor also increased from 8.37 for PSSA/PVA blend to 59.8 for PSSA/PVA/GO composites with 3[Formula: see text]wt.% GO loading. These results indicate that PSSA/PVA/GO composites can be used for high-[Formula: see text] capacitor applications.

OPTICAL AND ELECTRICAL PROPERTIES OF ARGON ION BEAM IRRADIATED PVA/Ag NANOCOMPOSITES

2017 ◽  
Vol 24 (03) ◽  
pp. 1750038 ◽  
Author(s):  
A. M. ABDEL REHEEM ◽  
A. ATTA ◽  
T. A. AFIFY
Keyword(s):  
Silver Nanoparticles ◽  
Electrical Properties ◽  
Ion Beam ◽  
Composite Films ◽  
Band Gap Energy ◽  
Dielectric Measurement ◽  
Optical And Electrical Properties ◽  
Structure Property ◽  
Casting Technique ◽  
Argon Ion

In this work, PVA/Ag nanocomposites films were prepared using solution casting technique, these films were irradiated with Argon ion beam to modify the structure. The main objective of the study is to enhance the optical and electrical properties of the polymer nanocomposites films by irradiation. The conventional characterization techniques such as UV–Visible spectroscopy, X-ray diffraction (XRD), Fourier transform infrared (FTIR), transmission electron microscope (TEM) and dielectric measurement are employed to understand the structure–property relations. FTIR analysis of these composite films shows chemical changes and a significant impact on them can be observed after irradiation. After doping, the XRD data shows silver nanoparticles formation in the PVA polymer. The band gap energy of samples is decreased with increases in the concentration of silver nanoparticles and ion beam fluence, which gives clear indication that ion beam irradiation induced defects are formed in the composite systems. The electrical conductivity, dielectric loss [Formula: see text] and dielectric constant [Formula: see text] are increased with increasing ion beam fluence and Ag dopant concentration.

The structural spectra of high dilutions and their unconventional application

2021 ◽  
Vol 15 (1) ◽  
pp. 1
Author(s):  
Saurav Arora
Keyword(s):  
Raman Spectroscopy ◽  
Electrical Properties ◽  
Vinylidene Fluoride ◽  
Composite Films ◽  
Water Structure ◽  
Laser Raman Spectroscopy ◽  
Oh Groups ◽  
Laser Raman ◽  
Poly Vinylidene Fluoride ◽  
High Dilutions

Until few years, the so-called implausible science, homeopathy, was on the verge of being rejected on conventional physicochemical grounds. The mere selection of ultrahigh dilutions (UHD) (homeopathic potencies) for experimentation by mainstream scientists seemed impossible, but the curiosity to explore the science behind homeopathy kept igniting intellectual alma mater who subjected homeopathy to laboratories and test tubes, to know beyond its clinical application. Still, there exist a huge gap and a challenge to convince a conventional scientist to go beyond his domains and look for something which is apparently invisible (beyond Avogadro). But gradually we are overcoming this dogma and exploring the finer aspects and applications of UHDs. Much research has been undertaken, at least, to protect the identity of UHDs, and we are now verge of proving the plausibility of homeopathy from every aspect. This issue of International Journal of High Dilution Research features two interesting articles on nature of UHDs and their unconventional application. The first article by NC Sukul et al aimed to decipher the nature of the water structure of UHDs of two commonly used homeopathic drugs Natrum muriaticum and Sulphur by Laser Raman Spectroscopy. This work is in the series undertaken by the group, who earlier experimented using Nuclear Magnetic Resonance; Electronic, Vibrational and Raman spectroscopy to shown differences in UHDs of various drugs. The present experiment could differentiate the intensities (potencies) of Nat-m and Sulph when compared to their controls, on the basis of hydrogen bond strength and free OH groups. The second article by Nandy et al proposes a new dimension to the application of UHD. In an interesting manner, the author used UHDs of Ferrum metallicum and Zincum oxidatum to improve the electrical properties of the electroactive Poly (vinylidene fluoride-hexafluoropropylene) (PVDF-HFP). The PVDF-HFP composite films were synthesized in their usual way, but an incorporation of Ferrum and Zinc-o could make the film as homeo-PVDF-composite. This enhancement of the electrical properties and are possibly due to the presence of nanoparticle, as hypothesized by the group. The nature and application of UHDs are promising but challenging areas, which can only be validated through extensive research and validation. The realm of UHDs is expanding, and the day is not far when plausibility of homeopathy would be proved from every aspect, but at the same time we should also keep the momentum of research at pace in clinical research too!

ELECTROLYTIC DEPOSITION OF TiC PARTICLES/Ag COMPOSITE FILMS AND THEIR MECHANICAL AND ELECTRICAL PROPERTIES

2018 ◽  
Vol 25 (08) ◽  
pp. 1850121
Author(s):  
LI YUAN ◽  
XUZHENG QIAN ◽  
CHUNYAN ZENG ◽  
CHEN GAO ◽  
YUE LU
Keyword(s):  
Electrical Properties ◽  
Silver Film ◽  
Composite Films ◽  
Electrolytic Deposition ◽  
Indentation Hardness ◽  
Pure Silver ◽  
Plating Bath ◽  
X Ray ◽  
Minor Addition ◽  
Mechanical And Electrical Properties

TiC particles/Ag composite films were successfully prepared through co-electrodeposition, using the Ag plating solutions with minor addition of TiC particles, followed by heat treatment in vacuum. The X-ray diffractometer (XRD), scanning electron microscope (SEM), nanoindentation tester and four-point probes were used to characterize phase composition, morphologies, mechanical properties and electrical properties of as-fabricated films, respectively. Experimental results show that only TiC and Ag phases are identified for the TiC particles/Ag composite films. TiC particles are incorporated tightly and evenly on the surface of the composite films without obvious agglomeration. TiC particles/Ag composite films maintain good electrical conductivity. Meanwhile, compared to pure silver film without the addition of TiC particles, the indentation hardness ([Formula: see text]) of the TiC/Ag composite film electrodeposited from the plating bath containing 6[Formula: see text]g/L of TiC particles can be improved from 600 [Formula: see text] to 11,000 [Formula: see text].

Optical and Electrical Properties of Polycarbonate/MnCl2 Composite Films

2008 ◽  
Vol 24 (2) ◽  
pp. 109-124 ◽  
Author(s):  
Ayman S. Ayesh ◽  
Rami A. Abdel-Rahem
Keyword(s):  
Electrical Properties ◽  
Composite Films ◽  
Optical And Electrical Properties

Flexible resistance-type strain sensors toward monitoring finger movements

Synlett ◽  
2021 ◽  
Author(s):  
Chao Lu ◽  
Xi Chen
Keyword(s):  
Carbon Nanotubes ◽  
Electrical Properties ◽  
Composite Films ◽  
Strain Sensors ◽  
Sensitive Strain ◽  
Nanocomposite Films ◽  
Finger Movements ◽  
Resistance Response ◽  
Mechanical And Electrical Properties ◽  
Highly Sensitive

Flexible strain sensors with superior flexibility and high sensitivity are critical to artificial intelligence. And it is favorable to develop highly sensitive strain sensors with simple and cost effective method. Here, we have prepared carbon nanotubes enhanced thermal polyurethane nanocomposites with good mechanical and electrical properties for fabrication of highly sensitive strain sensors. The nanomaterials have been prepared through simple but effective solvent evaporation method, and the cheap polyurethane has been utilized as main raw materials. Only a small quantity of carbon nanotubes with mass content of 5% has been doped into polyurethane matrix with purpose of enhancing mechanical and electrical properties of the nanocomposites. As a result, the flexible nanocomposite films present highly sensitive resistance response under external strain stimulus. The strain sensors based on these flexible composite films deliver excellent sensitivity and conformality under mechanical conditions, and detect finger movements precisely under different bending angles.

Hydrogen Bonding Effects on the Electrical Properties and Phase Morphology of Polyaniline Blends

2005 ◽  
Vol 13 (4) ◽  
pp. 415-423
Author(s):  
Pan Wei ◽  
Yang Shenglin ◽  
Li Guang ◽  
Jiang Jianming
Keyword(s):  
Electrical Conductivity ◽  
Hydrogen Bonding ◽  
Electrical Properties ◽  
Cluster Size ◽  
Sulfonic Acid ◽  
Carbonyl Groups ◽  
Solution Cast ◽  
Doped Polyaniline ◽  
Dodecylbenzene Sulfonic Acid ◽  
Polyacrylonitrile Copolymer

Blends of dodecylbenzene sulfonic acid-doped polyaniline (PANI-DBSA) with either polyacrylonitrile copolymer (PAN) or polystyrene (PS) were solution cast. The investigation focused on the interaction between the components, the morphology and the resulting electrical conductivity of blends. The results showed that with the same PANI-DBSA content the conductivity of PANI-DBSA/PAN was higher than that of PANI-DBSA/PS. PANI-DBSA was dispersed uniformly in the PAN matrix and its cluster size was rather smaller than in the PS matrix. This is attributed to hydrogen bonding between the carbonyl groups in PAN and the imine groups in PANI, which should lead to better compatibility between PANI-DBSA and PAN.

Tunability of localization length in naphthalene sulfonic acid doped polyaniline/nickel ferrite composite nanorods system

2019 ◽  
Vol 126 (3) ◽  
pp. 035102
Author(s):  
Madhumita Bhaumik ◽  
Arjun Maity ◽  
T. S. Mahule ◽  
V. V. Srinivasu
Keyword(s):  
Nickel Ferrite ◽  
Sulfonic Acid ◽  
Localization Length ◽  
Naphthalene Sulfonic Acid ◽  
Doped Polyaniline ◽  
Composite Nanorods

Electrical properties of gold–polymer composite films

2001 ◽  
Vol 90 (3) ◽  
pp. 1362-1367 ◽  
Author(s):  
V. Augelli ◽  
T. Ligonzo ◽  
M. C. Masellis ◽  
M. F. Muscarella ◽  
L. Schiavulli ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Polymer Composite ◽  
Composite Films

Polypyrrole and cellulose nanofiber based composite films with improved physical and electrical properties for electromagnetic shielding applications

2020 ◽  
Vol 240 ◽  
pp. 116304 ◽  
Author(s):  
Mahesh Parit ◽  
Haishun Du ◽  
Xinyu Zhang ◽  
Craig Prather ◽  
Mark Adams ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Composite Films ◽  
Electromagnetic Shielding ◽  
Cellulose Nanofiber
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