Investigation of structural transformations of long-chain molecular crystals during phase transitions by IR-spectroscopy

Gureva, S A; Marikhin, V. A.

doi:10.1088/1742-6596/1236/1/012008

Cited by 2 publications

(1 citation statement)

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“…The principal bands of pure PCL is 1467 and 1362 cm −1 (CH2 and CH bending vibrations) 1292-1042 cm −1 (C-O-C aliphatic ether stretching vibrations), and 730 cm −1 (CH2 long chain rocking motion vibrations) [13]. The spectral simply confirmed that the addition of the nanoparticles of charcoal into the hybrid significantly affected the absorption pattern of the hybrid composites.…”

Section: Ftir Analysismentioning

confidence: 63%

Microwave Absorption Properties of Unripe Plantain Husk, Polycaprolactone and Charcoal Powder Hybrid Nanocomposites Using Numerical Simulation at X-Band Frequency

Yakubu¹

2021

JANSET

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Single bulk materials have lesser advantages compared to nano materials in the area of mechanical, electrical, dielectric, optical and thermal properties enhancement of polymer and hybrid of bio-composites. In this work, charcoal (CH), unripe plantain husk (UPH), and polycaprolactone (PCL) based microwave absorber were synthesized using both mechanical alloy and melt blend techniques, respectively. Different percentages of the prepared charcoal nanoparticles was introduced into the hybrid composites to study the effect on dielectric properties, shielding effectiveness, reflection loss and structural morphology in the frequency range of 8–12 GHz.. Findings showed that the sample with the highest amount of charcoal percentage had the best shielding effectiveness and dielectric constant. The value of dielectric constant gradually increased from 3.06 to 5.45 at the frequency range measured. The charcoal average particle size was estimated to be 21.42 nm using TEM analysis while the mean deviation of surface roughness ranged from 5.45 to 25.56 nm using atomic force microscope. The highest shielding effectiveness of the hybrid composites was obtained for the 30 wt% nano charcoal content with a value of -48.78 dB at 10 GHz. The complete dispersion and interaction of the charcoal with the PCL and UPH enhanced the dielectric constant, loss factor, hence making it potent in microwave absorption, shielding and radar applications.

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Section: Ftir Analysismentioning

confidence: 63%

Microwave Absorption Properties of Unripe Plantain Husk, Polycaprolactone and Charcoal Powder Hybrid Nanocomposites Using Numerical Simulation at X-Band Frequency

Yakubu¹

2021

JANSET

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Electron-paramagnetic resonance and infrared spectroscopic research of the structure of a southfield Polyvinylidene difluoride near the percolation threshold

2021

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In this paper, the results of scientific research work are carried out to study the role of the interfacial layer in filled polymer materials using infrared and electron-paramagnetic resonance spectroscopy using the fundamentals of solid-state physics. At the same time, the authors of this work used all the rich experience of both experimenters and theoreticians working in this field of science and their own developments regarding methods for controlling the structure of these materials. It is noteworthy that the material interpreted in this work concerns composites subjected to special technological preparation, including the stage of ultrasonic dispersion of filler particles in a binder medium.

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Investigation of structural transformations of long-chain molecular crystals during phase transitions by IR-spectroscopy

Cited by 2 publications

References 0 publications

Microwave Absorption Properties of Unripe Plantain Husk, Polycaprolactone and Charcoal Powder Hybrid Nanocomposites Using Numerical Simulation at X-Band Frequency

Microwave Absorption Properties of Unripe Plantain Husk, Polycaprolactone and Charcoal Powder Hybrid Nanocomposites Using Numerical Simulation at X-Band Frequency

Electron-paramagnetic resonance and infrared spectroscopic research of the structure of a southfield Polyvinylidene difluoride near the percolation threshold

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