Chlorinated styrene butadiene rubber/ zinc sulfide: novel nanocomposites with unique properties- structural, flame retardant, transport and dielectric properties

Jasna, V. C.; Anilkumar, T.; Naik, Adarsh Ajith; Ramesan, M. T.

doi:10.1007/s10965-018-1536-0

Cited by 22 publications

(12 citation statements)

References 38 publications

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“…The final mass loss obtained at 800°C for pure PIN is only 50% whereas the composite with 5, 10, and 15 wt% PIN/ZnFe 2 O 4 shows the final mass around 66, 69, and 73%, respectively at 800°C. The higher thermal stability by incorporating inorganic phase into the polymer matrix is attributed to the strong interfacial interactions between the macromolecular chain of PIN and inorganic nanoparticles .…”

Section: Resultsmentioning

confidence: 99%

“…In the case of PIN/ ZnFe 2 O 4 nanocomposites, the thermal stability of all the samples is higher than the pure PIN and the thermal stability increases with increase in contents of ZnFe 2 O 4 nanoparticles. For example, the initial decomposition temperature of PIN is at 111 C while the PIN/15 wt% ZnFe 2 O 4 composite decomposes at a higher temperature around 150 C. The final mass loss obtained at 800 C for pure PIN is only 50% whereas the composite with 5, 10, and 15 wt% PIN/ZnFe 2 O 4 shows the final mass around 66, 69, and 73%, respectively at 800 C. The higher thermal stability by incorporating inorganic phase into the polymer matrix is attributed to the strong interfacial interactions between the macromolecular chain of PIN and inorganic nanoparticles [30].…”

Section: Differential Scanning Calorimetrymentioning

confidence: 98%

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Zinc ferrite @ polyindole nanocomposites: Synthesis, characterization and gas sensing applications

Anjitha

Anilkumar

Mathew³

et al. 2018

Polymer Composites

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This research work deals with the synthesis and characterization of polyindole (PIN)/zinc ferrite (ZnFe2O4) nanocomposite. In situ polymerization of indole with different contents of ZnFe2O4 nanoparticles has been employed in the work. Structural, morphological, thermal, gas sensing and electrical properties of the prepared composites have been evaluated. The shifting of peaks in the Fourier transform infrared and ultraviolet–visible spectrum has been found to reveal the interaction of ZnFe2O4 nanoparticles with the PIN matrix. Crystalline nature of the nanocomposites resulting from the presence of crystalline ZnFe2O4 has been revealed by X‐ray diffraction studies (XRD). Scanning electron microscope and high‐resolution transmission electron microscopy images revealed the uniform dispersion of nanoparticles at lower loading while at 15 wt% there are particle agglomerations. Improved thermal stability with the addition of ZnFe2O4 nanoparticles in PIN has been confirmed by thermogravimetry while the enhancement in glass transition temperature of the nanocomposite with respect to pure polymer has been confirmed by differential scanning calorimetry. The addition of nanoparticles greatly enhanced the alternating current and direct current conductivity, the dielectric constant and dielectric loss of PIN. The composite with 7 wt% shows the maximum properties. The fabricated composites showed excellent sensitivity and fast response to ammonia gas at room temperature. Thus the study reveals that the PIN/ZnFe2O4 nanocomposites can be considered as a potential candidate for the applications in sensors and nanoelectronic devices. POLYM. COMPOS., 40:2802–2811, 2019. © 2018 Society of Plastics Engineers

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Section: Resultsmentioning

confidence: 99%

Section: Differential Scanning Calorimetrymentioning

confidence: 98%

Zinc ferrite @ polyindole nanocomposites: Synthesis, characterization and gas sensing applications

Anjitha

Anilkumar

Mathew³

et al. 2018

Polymer Composites

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“…Generally, the polymer blends are prepared by solution blending, melt mixing, and ball milling. The major drawback of solution blending is the agglomeration of polymer phases . However, the proper mixing of polymers may not be easily achieved through solution mixing technique or in situ polymerization technique and this is mainly due to the formation of aggregate phases inside the polymer matrix.…”

Section: Introductionmentioning

confidence: 99%

Influence of titanium dioxide nanoparticles on the structural, thermal, electrical properties, and gas sensing behavior of polyaniline/phenothiazine blend nanocomposites

2019

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We report the preparation, characterization, and properties of polyaniline (PANI)/ phenothiazine (PTZ) blend with different concentration of titanium dioxide (TiO 2 ) nanoparticles. Formation of nanocomposites was monitored by Fourier transform infrared spectra, UV, X-ray diffraction (XRD), scanning electron microscopy (SEM), high-resolution transmission electron microscopy (HR-TEM), differential scanning calorimetry (DSC), and thermogravimetric analysis studies. Spectroscopic characterization confirmed the bonding structure of PANI/PTZ/TiO 2 composite through the shift in absorption peaks of nanocomposites compared to pure PANI/PTZ blend. XRD studies confirmed the presence of sharp crystalline peaks of TiO 2 in the blend system signifying good interaction among the adjoining molecular chain of polymer with the nanoparticles. Surface morphological details of the nanocomposites obtained using SEM and HR-TEM reveal the formation of hemispherical-like structures with a diameter of 15 to 30 nm. DSC measurements of these nanocomposites showed that the glass transition temperature was reduced as the concentration of TiO 2 increased into PANI/PTZ blend matrix. The influence of filler loading on thermal stability showed that the TiO 2 enhanced the thermal stability and reduced the rate of thermal degradation of polymer blend nanocomposites. Conductivity studies showed that both AC and DC conductivity, dielectric constant, and dielectric loss increase with an increase in the concentration of nano-filler TiO 2 up to 10 wt%. Similarly, the ammonia gas sensing behavior of nanocomposites was also improved by the addition of nanoparticles. From the characterization studies, it can be suggested that TiO 2 helps to achieve excellent thermophysical properties, gas sensing, electrical conductivity, and dielectric characteristics for PANI/ PTZ blend which can be used in the fabrication of electrical or nano-electronic devices.

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“…17 The oil and solvent diffusion process depends on free volume within the elastomer matrix, polarity of polymer, cross-link density, temperature, and the size of the penetrant molecules. 18,19…”

Section: Introductionmentioning

confidence: 99%

Comparative evaluation of oil resistance, dielectric properties, AC conductivity, and transport properties of nitrile rubber and chlorinated nitrile rubber

Nihmath

Ramesan

2020

Progress in Rubber, Plastics and Recycling Technology

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Nitrile rubber (NBR) has been extensively used in high oil resistance application such as in automotive seals and gaskets. Due to the poor mechanical strength of NBR, the performance of these products undergoes deterioration when it is in contact with hot oils and solvents. The aim of the present work is to investigate the molecular transport of petroleum fuels and oil through chlorinated NBR (Cl-NBR) with respect to different contents of chlorine. It also focuses on the effect of chlorine content on the alternating current (AC) conductivity and dielectric properties of Cl-NBR for flexible electronic applications. The transport characteristics of petroleum fuels through the NBR and Cl-NBR membranes have been studied by a simple sorption gravimetric analysis in the temperature range 27–50°C. The diffusion results have been explained in terms of the size of liquid molecules and the diffusion mechanism was found to follow the anomalous trend. The diffusion, sorption, solvent uptake, and permeation constants were investigated and were found to decrease with increase in the level of chlorine content in NBR matrix. The activation energy for diffusion and permeation processes were increased and reached maximum value for Cl-NBR (22% Cl content). The oil resistance property of Cl-NBR was significantly higher than pure NBR. The swelling of Cl-NBR in ASTM oil was three times lower than NBR. The electrical conductivity and dielectric properties of NBR was found to be increased with the increase in chlorine content of NBR. NBR showed the AC conductivity value of 7.24 S cm−1 at 106 Hz, while the Cl-NBR with 24% chlorine showed the conductivity value of 4.69 S cm−1. The higher AC conductivity and dielectric properties, solvent, and oil resistance of Cl-NBR than that of NBR suggests that the Cl-NBR can be used as multifunctional materials for flexible nano-electronic devices and high-performance oil-resistant applications.

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Chlorinated styrene butadiene rubber/ zinc sulfide: novel nanocomposites with unique properties- structural, flame retardant, transport and dielectric properties

Cited by 22 publications

References 38 publications

Zinc ferrite @ polyindole nanocomposites: Synthesis, characterization and gas sensing applications

Zinc ferrite @ polyindole nanocomposites: Synthesis, characterization and gas sensing applications

Influence of titanium dioxide nanoparticles on the structural, thermal, electrical properties, and gas sensing behavior of polyaniline/phenothiazine blend nanocomposites

Comparative evaluation of oil resistance, dielectric properties, AC conductivity, and transport properties of nitrile rubber and chlorinated nitrile rubber

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