Influence of Ultrasonic Treatment on Electromagnetic Characteristics of Composites Based on Multiwall Carbon Nanotubes at Microwave Frequencies

There is a growing demand for light and radar absorbing materials in both commercial and military purposes. In this paper, microwave properties of polimer based composites containing multiwalled carbon nanotubes used as fillers have been analyzed. The multiwall carbon nanotubes used in the composite were about 9.4 nm in diameter. The results show that the ultrasonic treatment modifies the dielectric properties of the composite. Both real and imaginary permittivity of composites is 2 times more than ordinary example after sonicating for 3 minutes.

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The influence of diameter of multiwalled carbon nanotubes on mechanical, optical and electrical properties of Langmuir–Schaefer films

Physical Chemistry Chemical Physics ◽

10.1039/d0cp03687k ◽

2020 ◽

Vol 22 (39) ◽

pp. 22380-22389

Author(s):

Karol Rytel ◽

Kamil Kędzierski ◽

Bolesław Barszcz ◽

Małgorzata Widelicka ◽

Alicja Stachowiak ◽

...

Keyword(s):

Thin Films ◽

Carbon Nanotubes ◽

Electrical Properties ◽

Multiwalled Carbon Nanotubes ◽

Multiwall Carbon Nanotubes ◽

Optical And Electrical Properties ◽

Multiwalled Carbon ◽

Multiwall Carbon

In this paper results of a study of mechanical, optical and electrical properties of thin films made of multiwall carbon nanotubes (MWCNT) of various types were reported.

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Significantly enhanced electrical and dielectric properties, and thermal stability of poly(3,4-ethylenedioxythiophene) coated on functionalized multiwalled carbon nanotubes

Synthetic Metals ◽

10.1016/j.synthmet.2020.116572 ◽

2020 ◽

Vol 269 ◽

pp. 116572

Author(s):

Mohsina Taj ◽

S.R. Manohara

Keyword(s):

Carbon Nanotubes ◽

Thermal Stability ◽

Dielectric Properties ◽

Multiwalled Carbon Nanotubes ◽

Multiwalled Carbon ◽

Electrical And Dielectric Properties ◽

Functionalized Multiwalled Carbon Nanotubes ◽

Thermal Stability Of

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Electromagnetic response from composite radiomaterials based on multiwall carbon nanotubes at microwave frequencies

2015 International Siberian Conference on Control and Communications (SIBCON) ◽

10.1109/sibcon.2015.7147115 ◽

2015 ◽

Cited By ~ 1

Author(s):

Grigoriy E. Kuleshov ◽

Yelena V. Zhuravlyova ◽

Olga A. Dotsenko

Keyword(s):

Carbon Nanotubes ◽

Multiwall Carbon Nanotubes ◽

Electromagnetic Response ◽

Microwave Frequencies ◽

Multiwall Carbon

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Application of Response Surface Methodology for Optimization of Urea Grafted Multiwalled Carbon Nanotubes in Enhancing Nitrogen Use Efficiency and Nitrogen Uptake by Paddy Plants

Journal of Nanotechnology ◽

10.1155/2016/1250739 ◽

2016 ◽

Vol 2016 ◽

pp. 1-14 ◽

Cited By ~ 3

Author(s):

Norazlina Mohamad Yatim ◽

Azizah Shaaban ◽

Mohd Fairuz Dimin ◽

Faridah Yusof ◽

Jeefferie Abd Razak

Keyword(s):

Carbon Nanotubes ◽

Response Surface Methodology ◽

Response Surface ◽

Nitrogen Uptake ◽

Plant Nutrition ◽

Multiwall Carbon Nanotubes ◽

Multiwalled Carbon ◽

Reflux Time ◽

Use Efficiency ◽

Multiwall Carbon

Efficient use of urea fertilizer (UF) as important nitrogen (N) source in the world’s rice production has been a concern. Carbon-based materials developed to improve UF performance still represent a great challenge to be formulated for plant nutrition. Advanced N nanocarrier is developed based on functionalized multiwall carbon nanotubes (f-MWCNTs) grafted with UF to produce urea-multiwall carbon nanotubes (UF-MWCNTs) for enhancing the nitrogen uptake (NU) and use efficiency (NUE). The grafted N can be absorbed and utilized by rice efficiently to overcome the N loss from soil-plant systems. The individual and interaction effect between the specified factors of f-MWCNTs amount (0.10–0.60 wt%) and functionalization reflux time (12–24 hrs) with the corresponding responses (NUE, NU) were structured via the Response Surface Methodology (RSM) based on five-level CCD. The UF-MWCNTs with optimized 0.5 wt% f-MWCNTs treated at 21 hrs reflux time achieve tremendous NUE up to 96% and NU at 1180 mg/pot. Significant model terms (pvalue < 0.05) for NUE and NU responses were confirmed by the ANOVA. Homogeneous dispersion of UF-MWCNTs was observed via FESEM and TEM. The chemical changes were monitored by FT-IR and Raman spectroscopy. Hence, this UF-MWCNTs’ approach provides a promising strategy in enhancing plant nutrition for rice.

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