Development and Investigation of Polyaniline Micro/nanocomposites that Possess Moderate Conductivity, Dielectric and Magnetic Properties

Phang, Sook‐Wai; Kuramoto, Noriyuki

doi:10.1295/polymj.pj2007049

Cited by 8 publications

(5 citation statements)

References 30 publications

(25 reference statements)

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The produced composite fabric with PANI was investigated with FT-IR spectroscopy. As shown in Figure S5, the peaks at 1141.7 and 1300.8 cm –1 are respectively attributed to the quinone structure and C–N stretching vibration peak, while the peaks at 1495.6 and 1581.4 cm –1 are respectively attributed to benzene and quinoid. − These results indicate the existence of PANI, which is consistent with the rough fiber surface (Figure d,e). In a magnified sectional image of a bamboo fiber (Figure e), scale-like PANI can be seen on the fiber surface.…”

Section: Resultssupporting

confidence: 73%

A Conductive Bamboo Fabric with Controllable Resistance for Tailoring Wearable Sensors

Wang

Fan

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

Force-sensitive textile sensors are becoming a research hotspot as a part of wearable devices. The core research topic is the method to obtain the sensing property, which decides the sensitivity and service performance of the sensors. Here, we introduce a new sensing mechanism based on a statistical change of contact resistance that exhibits an exponential decay upon strain or pressure, where a novel conductive bamboo fabric is prepared and the dependence of electric conductivity on the fabric structure is discovered. The fabric surface resistivity (ρs) is anisotropic with respect to the measuring directions and the warp, weft, and linear densities. The surface resistance (R s) decreases rapidly under pulling force, especially in diagonal directions, making it available in designing strain sensors. The volume resistivity (ρv) decreases with increasing weft and linear densities, too. The vertical resistance (R v) decays exponentially under pressure, and the rule is retained even if the fabric is coated with a polymer, leading to diverse possible pressure sensors with a good service performance (e.g., waterproof). Finally, the conductive fabric could be facilely tailored to various wearable sensors with a fast response time, e.g., sensing finger sleeves and sensing insole, which could be used to operate the manipulator’s fingers or to monitor human walking gestures, respectively.

show abstract

Section: Resultssupporting

confidence: 73%

A Conductive Bamboo Fabric with Controllable Resistance for Tailoring Wearable Sensors

Wang

Fan

et al. 2022

ACS Appl. Mater. Interfaces

View full text Add to dashboard Cite

show abstract

“…The average size of composite particles was 0.28 µm. The development of magnetic micro and nanoparticle composites with PANI has been reported to greatly enhance adsorption characteristics of the hybrid materials [53,54,55,56].…”

Section: Resultsmentioning

confidence: 99%

“…Peaks at 1568 cm −1 and 1466 cm −1 are due to C=C and C=N stretching vibrations of benzoinoid and quinoid rings, respectively. Phang and Kuramoto have reported the C=C and C=N stretching vibrations of PANI at 1572 and 1497 cm −1 , respectively [54]. The bands at 1307.6 cm −1 are due to C–N•+ stretching of secondary aromatic amine of PANI doped with protic acid.…”

Section: Resultsmentioning

confidence: 99%

Basic Blue Dye Adsorption from Water Using Polyaniline/Magnetite (Fe3O4) Composites: Kinetic and Thermodynamic Aspects

et al. 2019

View full text Add to dashboard Cite

Owing to its exciting physicochemical properties and doping–dedoping chemistry, polyaniline (PANI) has emerged as a potential adsorbent for removal of dyes and heavy metals from aqueous solution. Herein, we report on the synthesis of PANI composites with magnetic oxide (Fe3O4) for efficient removal of Basic Blue 3 (BB3) dye from aqueous solution. PANI, Fe3O4, and their composites were characterized with several techniques and subsequently applied for adsorption of BB3. Effect of contact time, initial concentration of dye, pH, and ionic strength on adsorption behavior were systematically investigated. The data obtained were fitted into Langmuir, Frundlich, Dubbanin-Rudiskavich (D-R), and Tempkin adsorption isotherm models for evaluation of adsorption parameters. Langmuir isotherm fits closely to the adsorption data with R2 values of 0.9788, 0.9849, and 0.9985 for Fe3O4, PANI, and PANI/Fe3O4 composites, respectively. The maximum amount of dye adsorbed was 7.474, 47.977, and 78.13 mg/g for Fe3O4, PANI, and PANI/Fe3O4 composites, respectively. The enhanced adsorption capability of the composites is attributed to increase in surface area and pore volume of the hybrid materials. The adsorption followed pseudo second order kinetics with R2 values of 0.873, 0.979, and 0.999 for Fe3O4, PANI, and PANI/Fe3O4 composites, respectively. The activation energy, enthalpy, Gibbs free energy changes, and entropy changes were found to be 11.14, −32.84, −04.05, and −0.095 kJ/mol for Fe3O4, 11.97, −62.93, −07.78, and −0.18 kJ/mol for PANI and 09.94, −74.26, −10.63, and −0.210 kJ/mol for PANI/Fe3O4 respectively, which indicate the spontaneous and exothermic nature of the adsorption process.

show abstract

“…In this regard, the modification of photocatalysts with magnetic material-based PANI could be a better choice. [20][21][22][23] Compared with random particle PANI, the one-dimensional PANI nanoarray structures (1D PANI) show the superiority in electronic and electrochemical properties due to the effectively optimized ion and electron transport channels and the large specific surface area. It has been verified that 1D PANI growing on either graphene sheets or multi-walled carbon nanotubes can effectively improve the specific capacitance of composites and cycling stability.…”

Section: Introductionmentioning

confidence: 99%

Photodegradation and in‐Situ SERS Monitoring Properties of Ag@AgCl Anchored on Sea Urchin‐shaped Fe₃O₄@C/1D PANI Nanoparticles**

et al. 2022

View full text Add to dashboard Cite

Here, sea urchin-shaped nanoparticles were first fabricated by growing one dimensional polyaniline (1D PANI) nanowire array on carbon layer encapsulated Fe 3 O 4 nanoparticles, and then Ag@AgCl photocatalyst were tightly anchored on the surface of PANI nanowire to form Fe 3 O 4 @C/1D PANI/Ag@AgCl bifunctional material as recyclable adsorption-photocatalysts and surface enhanced Raman scattering (SERS) substrate to monitor photocatalytic degradation of dye molecules. Compared with Fe 3 O 4 @C/1D PANI, Ag@AgCl and Fe 3 O 4 @C/PANI/Ag@AgCl catalysts, the fast electron transfer characteristics of conductive 1D PANI nanowire array and the synergistic effect between the surface plasmon resonance of Ag and the photosensitive characteristic of AgCl, enabled the prepared Fe 3 O 4 @C/1D PANI/ Ag@AgCl excellent adsorption-photocatalytic efficiency for the degradation of RhB under visible-light irradiation. PL spectra and a series of photoelectrochemical measurements were carried out to investigate the reasons for such enhanced photocatalytic activity and the possible improved photocatalytic degradation mechanism was proposed. Meanwhile, the detection of the presence of RhB and its degradation process were achieved with real-time SERS technology employing the prepared Fe 3 O 4 @C/1D PANI/Ag@AgCl photocatalyst itself as the substrate. All the results made it great promise for simultaneously monitoring and removal of organic contaminants in water.

show abstract

Development and Investigation of Polyaniline Micro/nanocomposites that Possess Moderate Conductivity, Dielectric and Magnetic Properties

Cited by 8 publications

References 30 publications

A Conductive Bamboo Fabric with Controllable Resistance for Tailoring Wearable Sensors

A Conductive Bamboo Fabric with Controllable Resistance for Tailoring Wearable Sensors

Basic Blue Dye Adsorption from Water Using Polyaniline/Magnetite (Fe3O4) Composites: Kinetic and Thermodynamic Aspects

Photodegradation and in‐Situ SERS Monitoring Properties of Ag@AgCl Anchored on Sea Urchin‐shaped Fe₃O₄@C/1D PANI Nanoparticles**

Contact Info

Product

Resources

About

Development and Investigation of Polyaniline Micro/nanocomposites that Possess Moderate Conductivity, Dielectric and Magnetic Properties

Cited by 8 publications

References 30 publications

A Conductive Bamboo Fabric with Controllable Resistance for Tailoring Wearable Sensors

A Conductive Bamboo Fabric with Controllable Resistance for Tailoring Wearable Sensors

Basic Blue Dye Adsorption from Water Using Polyaniline/Magnetite (Fe3O4) Composites: Kinetic and Thermodynamic Aspects

Photodegradation and in‐Situ SERS Monitoring Properties of Ag@AgCl Anchored on Sea Urchin‐shaped Fe3O4@C/1D PANI Nanoparticles**

Contact Info

Product

Resources

About

Photodegradation and in‐Situ SERS Monitoring Properties of Ag@AgCl Anchored on Sea Urchin‐shaped Fe₃O₄@C/1D PANI Nanoparticles**