Characterization and thermal conductivity investigation of Copper-Polyaniline Nano composite synthesized by gamma radiolysis method

Alyan, Adel; Abdel‐Samad, S.; Massoud, A.; Waly, S. A.

doi:10.1007/s00231-019-02588-z

Cited by 31 publications

(16 citation statements)

References 38 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The subsequent weight loss intervals also showed the similar trend of loss values at elevated temperature ranges such between 300°C to 600°C and 600°C to 900°C as shown in Figure 2B. At elevated temperatures, the further weight loss was prominent for the PANI due to the decomposition of the polymeric backbone as well as benzene ring openings 28 . However, at higher temperatures beyond 300°C, the WS 2 remained thermally stable with minor weight loss of about 5% up to 900°C.…”

Section: Resultssupporting

confidence: 59%

“…As indicated by the TGA curves, the initial weight loss occurred at the temperature ranges of 30°C to 100°C was about 7.2%, 18.7%, 11.4%, 17.3% and 15.7% corresponding to the WS 2 , PANI, WS 2 + PANI 1, WS 2 + PANI 2 and WS 2 + PANI 5, respectively. This weight loss may be attributed to the evaporation of the trapped water molecules 28,47 . The second significant weight loss interval was observed at a temperature ranges of 100°C to 300°C, showed further decrement in weight loss values to 21.2%, 20.9%, 19.5%, ~20% and 16.2% for the WS 2 , PANI, WS 2 + PANI 1, WS 2 + PANI 2 and WS 2 + PANI 5, respectively.…”

Section: Resultsmentioning

confidence: 91%

“…Recently, Cu‐PANI composite‐based NFs have shown enhanced thermal conductivity improvement (107%‐159%) at various temperature range (10°C‐90°C). However, the colloidal stability and rheological aspects of PANI‐based NFs were not reported in literature as per best of our knowledge 28 . In addition, a helical coil heat exchanger has shown significant improvement in the HT coefficient (10.52%‐69.62%) at different range of volume concentrations (0.1%‐0.5%) with the PANI (nanofibres)‐based aqueous NFs 29 .…”

Section: Introductionmentioning

confidence: 85%

“…This weight loss may be attributed to the evaporation of the trapped water molecules. 28,47 The second significant weight loss interval was observed at a temperature ranges of 100 C to 300 C, showed further decrement in weight loss values to 21.2%, 20.9%, 19.5%, 20% and 16.2% for the WS 2 , PANI, WS 2 + PANI 1, WS 2 + PANI 2 and WS 2 + PANI 5, respectively. For intrinsic WS 2 , the weight loss may be attributed to the melting and decomposition of the sulphur molecules.…”

Section: Thermogravimetric Analysismentioning

confidence: 92%

See 3 more Smart Citations

Thermal conductivity, rheology and stability analysis of 2D tungsten disulphide‐doped polyaniline‐based nanofluids: An experimental investigation

et al. 2020

View full text Add to dashboard Cite

Summary In this study, polyaniline (PANI) nanocomposite‐based nanofluids (NFs) in ethylene glycol were obtained with a two‐step method by varying volume concentrations from 0.005% to 0.02%. Tungsten disulphide (WS2) nanoparticles were doped in PANI having different weight percentage (1%, 2% and 5%) via oxidative in situ polymerization employing ammonium persulphate oxidant in an acidic environment. The nanocomposites were comprehensively characterised using various techniques, such as Fourier transform infrared spectroscopy, thermogravimetric analysis, field emission scanning electron microscopy and high‐resolution transmission electron microscopy. The formulated NFs were extensively investigated with zeta‐sizer, particle size analyzer, thermal property analyzer and rheometer in a temperature range of 25°C to 70°C. The zeta potential results (up to 54.5 mV) were evident of extraordinary stability of NFs at all targeted temperatures along with polydispersity index <30% and mean particle/agglomerate size in the range of 335.8 to 489 nm. Additionally, a remarkable thermal conductivity improvement (~20.7%) was achieved with intrinsic PANI‐based NFs at an operating temperature of 50°C. Subsequently, it varied substantially with WS2 doping within PANI matrix and reached to 117.9%. Furthermore, the rheological measurements have revealed the viscoelastic nature of NFs along with a remarkable reduction in apparent viscosity (up to 8.4%). The temperature sweep viscosity indicated the transition of relative viscosity from high to low at a critical temperature of about 55°C. The NF10 (WS2 + PANI 5, at 0.005 vol%) was found to be the best candidate with 63.8% thermal conductivity enhancement and 6.4% viscosity reduction as compared with the base fluid at an operating temperature of 50°C. Thus, WS2 doping within PANI has proved to be crucial in the proliferation of thermal conductivity and mitigation of viscosity.

show abstract

Section: Resultssupporting

confidence: 59%

Section: Resultsmentioning

confidence: 91%

Section: Introductionmentioning

confidence: 85%

Section: Thermogravimetric Analysismentioning

confidence: 92%

See 2 more Smart Citations

Thermal conductivity, rheology and stability analysis of 2D tungsten disulphide‐doped polyaniline‐based nanofluids: An experimental investigation

et al. 2020

View full text Add to dashboard Cite

show abstract

“…Recent studies have produced conducting PANI composites by employing several techniques, including sol-gel method [21], chemical methods [22], electropolymerization method [23], in-situ chemical oxidation polymerization [24], insitu polymerization technique [25], solution casting [26], via a sonochemical method [27], and aqueous solutions [28]. The irradiation of polymers is achieved using either gamma-rays, electron beams, or ionizing radiation [29]. Through this process, the properties of polymers are significantly altered in accordance with both the radiation employed and the features of the target materials.…”

Section: Introductionmentioning

confidence: 99%

Synthesis and Characterization of Conducting Polyaniline Based on ANI-PVA-MgCl₂Composites Using Gamma Radiation Technique

et al. 2020

View full text Add to dashboard Cite

Conducting polymer composites such as conducting polyaniline composites have numerous attractive physical properties which could be used in several vital applications. In order to give composite materials unique physical and chemical properties that can have broad application potential in various areas, it requires appropriate adding of metal chloride through conductive polymer composites. This study employs the gamma radiation technique to produce conducting polyaniline from an aqueous solution. The solution comprises four materials, including: ANI, PVA, MgCl2 and distilled H2O, which serve as a binder or film support, precursor, Cl ions provider, and a solvent. To attain the conducting polyaniline composite, a film of ANI-PVA-MgCl2 was subjected to gamma radiation under ambient conditions. Conducting polyaniline composite has been formed once the colour began to change from white to green following the doses of radiation. The results have demonstrated that the level of gamma radiation increased to 40 KGy, thereby confirming that the electrical insulation ANI-PVA-MgCl2 film was converted into an electrically conductive polyaniline composite film. The production of conducting polyaniline composite has been observed since the colour has been changed from white to green colour alongside radiation doses. INDEX TERMS Poly (vinyl alcohol), Aniline, Magnesium chloride, Gamma radiation technique.

show abstract

Electroconductive Green Metal‐polyaniline Nanocomposites: Synthesis and Application in Sensors

Kyomihumbo

Feleni

2022

Electroanalysis

View full text Add to dashboard Cite

Polyaniline (PANI) is one of the most extensively used conducting polymer due to its fascinating properties including conducting, thermal, optical, magnetic and electrochemical properties, simple synthesis procedure and low cost of monomer. It has attracted major attention in a variety of applications including electrochemical sensors, catalysts, supercapacitors and biosensors. However, its limitations such as insolubility in common solvents, low process‐ability and poor mechanical properties have led to the development of new approaches to improve it properties. Metal nanoparticles (MNPs) such as silver, gold, copper and palladium have been combined with PANI to improve on its properties which has led to a new class of materials known as metal/PANI nanocomposites. These hybrid nanocomposites incorporate advantages of both MNPs and polymers which effectively improves the properties of the individual materials. Various synthesis techniques including in situ polymerization, ɤ‐radiolysis, electrodeposition, complexation, vacuum deposition and interfacial polymerization have been used in the formation of metal/PANI nanocomposites. These nanocomposites have been used in various sensor and biosensor applications due to their excellent conductivity, ease of synthesis, excellent redox potentials, chemical and thermal stability. This review highlights the various metal/PANI nanocomposites, their various synthesis techniques and their application in sensors and biosensors. The importance of these nanocomposites in sensing and signaling various toxic heavy metals such as mercury, lead and silver and toxic gases such as hydrogen sulphide, ammonia and chloroform has been discussed. In addition the review covers the applications of metal/PANI nanocomposites in biosensor systems for the detection of glucose, DNA, protein, cholesterol, drugs and hydrogen peroxide.

show abstract

Characterization and thermal conductivity investigation of Copper-Polyaniline Nano composite synthesized by gamma radiolysis method

Cited by 31 publications

References 38 publications

Thermal conductivity, rheology and stability analysis of 2D tungsten disulphide‐doped polyaniline‐based nanofluids: An experimental investigation

Thermal conductivity, rheology and stability analysis of 2D tungsten disulphide‐doped polyaniline‐based nanofluids: An experimental investigation

Synthesis and Characterization of Conducting Polyaniline Based on ANI-PVA-MgCl₂Composites Using Gamma Radiation Technique

Electroconductive Green Metal‐polyaniline Nanocomposites: Synthesis and Application in Sensors

Contact Info

Product

Resources

About

Characterization and thermal conductivity investigation of Copper-Polyaniline Nano composite synthesized by gamma radiolysis method

Cited by 31 publications

References 38 publications

Thermal conductivity, rheology and stability analysis of 2D tungsten disulphide‐doped polyaniline‐based nanofluids: An experimental investigation

Thermal conductivity, rheology and stability analysis of 2D tungsten disulphide‐doped polyaniline‐based nanofluids: An experimental investigation

Synthesis and Characterization of Conducting Polyaniline Based on ANI-PVA-MgCl2Composites Using Gamma Radiation Technique

Electroconductive Green Metal‐polyaniline Nanocomposites: Synthesis and Application in Sensors

Contact Info

Product

Resources

About

Synthesis and Characterization of Conducting Polyaniline Based on ANI-PVA-MgCl₂Composites Using Gamma Radiation Technique