Significantly Improved Dielectric Performance of Poly(1-butene)-Based Composite Films via Filling Polydopamine Modified Ba(Zr0.2Ti0.8)O3-Coated Multiwalled Carbon Nanotubes Nanoparticles

The low dielectric constant of the nonpolar polymer poly(1-butene) (PB-1) limits its application as a diaphragm element in energy storage capacitors. In this work, Ba(Zr0.2Ti0.8)O3-coated multiwalled carbon nanotubes (BZT@MWCNTs) were first prepared by using the sol–gel hydrothermal method and then modified with polydopamine (PDA) via noncovalent polymerization. Finally, PB-1 matrix composite films filled with PDA-modified BZT@MWCNTs nanoparticles were fabricated through a solution-casting method. Results indicated that the PDA-modified BZT@MWCNTs had good dispersion and binding force in the PB-1 matrix. These characteristics improved the dielectric and energy storage performances of the films. Specifically, the PDA-modified 10 vol% BZT@ 0.5 vol% MWCNTs/PB-1 composite film exhibited the best dielectric performance. At 1 kHz, the dielectric constant of this film was 25.43, which was 12.7 times that of pure PB-1 films. Moreover, its dielectric loss was 0.0077. Furthermore, under the weak electric field of 210 MV·m−1, the highest energy density of the PDA-modified 10 vol% BZT@ 0.5 vol% MWCNTs/PB-1 composite film was 4.57 J·cm−3, which was over 3.5 times that of PB-1 film (≈1.3 J·cm−3 at 388 MV·m−1).

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An amperometric cholesterol biosensor based on multiwalled carbon nanotubes and organically modified sol-gel/chitosan hybrid composite film

Analytical Biochemistry ◽

10.1016/j.ab.2004.10.040 ◽

2005 ◽

Vol 337 (1) ◽

pp. 111-120 ◽

Cited By ~ 226

Author(s):

Xuecai Tan ◽

Minjian Li ◽

Peixiang Cai ◽

Lijun Luo ◽

Xiaoyong Zou

Keyword(s):

Carbon Nanotubes ◽

Composite Film ◽

Multiwalled Carbon Nanotubes ◽

Hybrid Composite ◽

Sol Gel ◽

Multiwalled Carbon ◽

Organically Modified ◽

Cholesterol Biosensor

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Amperometric creatinine biosensor based on covalently coimmobilized enzymes onto carboxylated multiwalled carbon nanotubes/polyaniline composite film

Analytical Biochemistry ◽

10.1016/j.ab.2011.07.032 ◽

2011 ◽

Vol 419 (2) ◽

pp. 277-283 ◽

Cited By ~ 62

Author(s):

Sandeep Yadav ◽

Ashok Kumar ◽

C.S. Pundir

Keyword(s):

Carbon Nanotubes ◽

Composite Film ◽

Multiwalled Carbon Nanotubes ◽

Multiwalled Carbon

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SILK FIBROIN FILMS CRYSTALLIZED BY MULTIWALLED CARBON NANOTUBES

International Journal of Modern Physics B ◽

10.1142/s0217979208047456 ◽

2008 ◽

Vol 22 (09n11) ◽

pp. 1807-1812 ◽

Cited By ~ 4

Author(s):

H.-S. KIM ◽

W.-I. PARK ◽

Y. KIM ◽

H.-J. JIN

Keyword(s):

Electron Microscopy ◽

Carbon Nanotubes ◽

Multiwalled Carbon Nanotubes ◽

Silk Fibroin ◽

Composite Films ◽

Tensile Modulus ◽

Multiwalled Carbon ◽

Regenerated Silk Fibroin ◽

Silk Films ◽

Β Sheet

Silk films prepared from regenerated silk fibroin are normally stabilized by β-sheet formation through the use of solvents (methanol, water etc.). Herein, we report a new method of preparing water-stable films without a β-sheet conformation from regenerated silk fibroin solutions by incorporating a small amount (0.2 wt%) of multiwalled carbon nanotubes (MWCNTs). To extend the biomaterial utility of silk proteins, forming water-stable silk-based materials with enhanced mechanical properties is essential. Scanning electron microscopy and transmission electron microscopy were used to observe the morphology of the MWCNT-incorporated silk films. The wide-angle X-ray diffraction provided clear evidence of the crystallization of the silk fibroin induced by MWCNT in the composite films without any additional annealing processing. The tensile modulus and strength of the composite films were improved by 108% and 51%, respectively, by the incorporation of 0.2 wt% of MWCNTs, as compared with those of the pure silk films. The method described in this study will provide an alternative means of crystallizing silk fibroin films without using an organic solvent or blending with any other polymers, which may be important in biomedical applications.

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Preparation and characterization of coaxial multiwalled carbon nanotubes/polyaniline tubular nanocomposites for electrochemical energy storage in the presence of sodium alginate

Synthetic Metals ◽

10.1016/j.synthmet.2014.03.029 ◽

2014 ◽

Vol 193 ◽

pp. 48-57 ◽

Cited By ~ 34

Author(s):

Wenling Wu ◽

Yanfeng Li ◽

Liuqing Yang ◽

Yingxia Ma ◽

Xu Yan

Keyword(s):

Carbon Nanotubes ◽

Energy Storage ◽

Sodium Alginate ◽

Multiwalled Carbon Nanotubes ◽

Electrochemical Energy Storage ◽

Multiwalled Carbon ◽

Electrochemical Energy

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Fabrication of Cu-WO3-functionalised multiwalled carbon nanotubes composite film electrode by direct deposition for sensing application

Thin Solid Films ◽

10.1016/j.tsf.2021.138940 ◽

2021 ◽

Vol 737 ◽

pp. 138940

Author(s):

M. Reshma ◽

R. Manu

Keyword(s):

Carbon Nanotubes ◽

Composite Film ◽

Multiwalled Carbon Nanotubes ◽

Film Electrode ◽

Multiwalled Carbon ◽

Direct Deposition ◽

Sensing Application

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Surface Properties of Silica–MWCNTs/PDMS Composite Coatings Deposited on Plasma Activated Glass Supports

Applied Sciences ◽

10.3390/app11199256 ◽

2021 ◽

Vol 11 (19) ◽

pp. 9256

Author(s):

Michał Chodkowski ◽

Iryna Ya. Sulym ◽

Konrad Terpiłowski ◽

Dariusz Sternik

Keyword(s):

Electron Microscopy ◽

Carbon Nanotubes ◽

Scanning Electron Microscopy ◽

Multiwalled Carbon Nanotubes ◽

Composite Coatings ◽

Thermal Analyses ◽

Sol Gel ◽

Visible Range ◽

Multiwalled Carbon ◽

Scanning Electron

In this paper, we focus on fabrication and physicochemical properties investigations of silica–multiwalled carbon nanotubes/poly(dimethylsiloxane) composite coatings deposited on the glass supports activated by cold plasma. Air or argon was used as the carrier gas in the plasma process. Multiwalled carbon nanotubes were modified with poly(dimethylsiloxane) in order to impart their hydrophobicity. The silica–multiwalled carbon nanotubes/poly(dimethylsiloxane) nanocomposite was synthesized using the sol–gel technique with acid-assisted tetraethyl orthosilicate hydrolysis. The stability and the zeta potential of the obtained suspension were evaluated. Then, the product was dried and used as a filler in another sol–gel process, which led to the coating application via the dip-coating method. The substrates were exposed to the hexamethyldisilazane vapors in order to improve their hydrophobicity. The obtained surfaces were characterized by the wettability measurements and surface free energy determination as well as optical profilometry, scanning electron microscopy, and transmittance measurements. In addition, the thermal analyses of the carbon nanotubes as well as coatings were made. It was found that rough and hydrophobic coatings were obtained with a high transmittance in the visible range. They are characterized by the water contact angle larger than 90 degrees and the transmission at the level of 95%. The X-ray diffraction studies as well as scanning electron microscopy images confirmed the chemical and structural compositions of the coatings. They are thermally stable at the temperature up to 250 °C. Moreover, the thermal analysis showed that the obtained composite material has greater thermal resistance than the pure nanotubes.

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