Three-Dimensional Printed and Biocompatible Conductive Composites Comprised of Polyhydroxybutyrate and Multiwalled Carbon Nanotubes

2021 ◽  
Vol 60 (2) ◽  
pp. 885-897
Author(s):  
Li Dan ◽  
Qiuli Cheng ◽  
Ravin Narain ◽  
Beate Krause ◽  
Petra Pötschke ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Three Dimensional ◽  
Multiwalled Carbon ◽  
Conductive Composites

In-plane shear of nanoprepreg/nanostitched three-dimensional carbon/epoxy multiwalled carbon nanotubes composites

2019 ◽  
Vol 53 (24) ◽  
pp. 3413-3431 ◽  
Author(s):  
Kadir Bilisik ◽  
Nesrin Karaduman ◽  
Gulhan Erdogan ◽  
Erdal Sapanci ◽  
Sila Gungor
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Shear Fracture ◽  
Three Dimensional ◽  
Carbon Fabric ◽  
Multiwalled Carbon ◽  
Plane Shear ◽  
The Matrix ◽  
Delamination Area ◽  
Base Structure

The in-plane shear properties of nanostitched three-dimensional (3D) carbon/epoxy composites were investigated. Adding the stitching fiber or multiwalled carbon nanotubes or nanostitched fiber into carbon fabric preform slightly improved the shear strength and modulus of stitched and stitched nanocomposites. The in-plane shear fracture of the base and nanostructures was extensive delamination and tensile fiber failures in the sheared region. But, the stitched and stitched nanocomposites had angular deformation of the stitching yarns in the fiber scissoring areas, shear hackles in the matrix and successive fiber breakages in the interlayers. Probably, this mechanism prohibited extensive interlayer opening in the nanostitched composites. The results exhibited that introducing the stitching fiber (1.44%) and multiwalled carbon nanotubes (0.03125%) in the base structure enhanced its transverse fracture properties as a form of confined delamination area. Therefore, the damaged tolerance properties of the stitched nanocomposites were enhanced.

scholarly journals Electrical and rheological percolation behavior of multiwalled carbon nanotube-reinforced poly(phenylene sulfide) composites

2016 ◽  
Vol 51 (2) ◽  
pp. 199-208 ◽  
Author(s):  
B Ribeiro ◽  
RB Pipes ◽  
ML Costa ◽  
EC Botelho
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Three Dimensional ◽  
Polyphenylene Sulfide ◽  
Melt Mixing ◽  
Multiwalled Carbon ◽  
Single Screw Extruder ◽  
Percolation Behavior ◽  
Electron Microscopy Analysis ◽  
Microscopy Analysis

Polyphenylene sulfide-based nanocomposites filled with unmodified multiwalled carbon nanotubes from 0.5 wt% to 8.0 wt% have been prepared by melt mixing technique with a single-screw extruder and hot press. Transmission electronic microscopy and scanning electron microscopy analysis were carried out in order to assess the multiwalled carbon nanotubes dispersion throughout the polyphenylene sulfide matrix. Electrical conductivity of the polymer was dramatically enhanced by about 11 decades between 2.0 wt% and 3.0 wt% of nanotubes, suggesting the formation of three-dimensional conductive network within the polymeric matrix. The storage modulus (G′) of neat polyphenylene sulfide presented an increase by two orders of magnitude when 2.0 wt% of pristine multiwalled carbon nanotubes was considered, with the formation of an interconnected nanotube structure, indicative of “pseudo-solid-like” behavior. In addition, percolation networks were formed when the loading levels achieve up to 1.5 wt% for multiwalled carbon nanotubes/polyphenylene sulfide composites.

Three-dimensional nanocomposite formed by hydrophobic multiwalled carbon nanotubes threading titanium dioxide as the counter electrode of enhanced performance dye-sensitized solar cells

RSC Advances ◽  
2016 ◽  
Vol 6 (60) ◽  
pp. 55071-55078 ◽  
Author(s):  
Zhichun Yang ◽  
Waqar Ahmad ◽  
Liang Chu ◽  
Majid Raissan Al-bahrani ◽  
Fanfan Tu ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Solar Cells ◽  
Multiwalled Carbon Nanotubes ◽  
Counter Electrode ◽  
Dye Sensitized Solar Cells ◽  
Three Dimensional ◽  
Multiwalled Carbon ◽  
Dye Sensitized ◽  
Novel Strategy ◽  
Sensitized Solar Cells

A novel strategy of fast solvent induced assembly is used to synthesize a three-dimensional (3D) nanocomposite of multiwalled carbon nanotubes (MWCNTs) and TiO2, as the counter electrode (CE) of dye-sensitized solar cells (DSSCs).

scholarly journals Three-dimensional bundle-like multiwalled carbon nanotubes composite for supercapacitor electrode application

2021 ◽  
Vol 22 ◽  
pp. 100569
Author(s):  
Hao-Lin Hsu ◽  
Milon Miah ◽  
Shyamal Kumar Saha ◽  
Jean-Hong Chen ◽  
Lung-Chuan Chen ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Multiwalled Carbon Nanotubes ◽  
Three Dimensional ◽  
Supercapacitor Electrode ◽  
Multiwalled Carbon

Anchoring Manganese on Multiwalled Carbon Nanotubes for Super Capacitor Applications

2020 ◽  
Vol 17 (5) ◽  
pp. 2279-2283
Author(s):  
R. Ramesh Kannan ◽  
M. Sivabharathy
Keyword(s):  
Carbon Nanotubes ◽  
Band Gap ◽  
Multiwalled Carbon Nanotubes ◽  
Three Dimensional ◽  
High Temperature Phase ◽  
Thermal Method ◽  
Temperature Phase ◽  
Multiwalled Carbon ◽  
Super Capacitor ◽  
Thermal Synthesis

Manganese decorated Multiwalled carbon nanotubes were synthesized through a simple solvo thermal method. The surface morphology and structural analyses of the MnO2 doped MCNT have performed by Transmission electron microscope (TEM), Field emission scanning electron microscopy (FESEM) and X-ray diffraction (XRD). Morphological characterization reveals that three-dimensional hierarchy architecture built with a highly porous layer consisting of interconnected MnO2 uniformly coated on the CNT surface. The XRD and EDS results confirmed that the prepared samples containing MnO2/CNT in pure form without impurities. It also reveals that birnessite-type MnO2 is formed through the solvo thermal synthesis. The Optical properties of the prepared samples were examined by UV-visible spectrometer and Fourier transform spectroscopy. The UV-vis spectra of the nanoparticles indicate a decrease in the band gap from 1.037 to 0.999 eV. The results reveal the band gap shrinkage associated with Mn concentration more at high temperature phase and crystalline behavior. The composition of the prepared samples were characterized using Energy dispersive spectroscopy (EDS).

scholarly journals Tunable Chemical Grafting of Three-Dimensional Poly (3, 4-ethylenedioxythiophene)/Poly (4-styrenesulfonate)-Multiwalled Carbon Nanotubes Composite with Faster Charge-Carrier Transport for Enhanced Gas Sensing Performance

Sensors ◽  
2020 ◽  
Vol 20 (9) ◽  
pp. 2470
Author(s):  
Hyojae Kim ◽  
Yeongseok Jang ◽  
Gyeong Won Lee ◽  
Seung Yun Yang ◽  
Jinmu Jung ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Charge Carrier ◽  
Multiwalled Carbon Nanotubes ◽  
Carrier Transport ◽  
Gas Sensing ◽  
Three Dimensional ◽  
Charge Carrier Transport ◽  
Multiwalled Carbon ◽  
Gas Molecules ◽  
Sensing Performance

The three-dimensional volumetric application of conductive poly (3,4-ethylenedioxythiophene)/poly (4-styrenesulfonate) (PEDOT:PSS) to multiwalled carbon nanotubes (MWCNTs) has not been widely reported. In this study, the applicability of the 3D PEDOT:PSS-MWCNT composite for a gas sensor was investigated with different PEDOT:PSS concentrations. The gas-sensing performance of the 3D PEDOT:PSS-MWCNT composites was investigated using ethanol and carbon monoxide (CO) gas. Overall, in comparison with the pristine MWCNTs, as the PEDOT:PSS concentration increased, the 3D PEDOT:PSS-MWCNT composites exhibited increased conductivity and enhanced gas sensing performances (fast response and recovery times) to both ethanol and CO gases. Importantly, although the PEDOT:PSS coating layer reduced the number of sites for the adsorption and desorption of gas molecules, the charge-carrier transport between the gas molecules and MWCNTs was significantly enhanced. Thus, PEDOT:PSS can be chemically grafted to MWCNTs to enhance the connectivity and conductivity of a 3D network, leading to possible applications in gas sensors.

Synthesis of Three Dimensional Graphene/Multiwalled Carbon Nanotubes Nanocomposites Hydrogel and Investigation of their Electrochemical Properties as Electrodes of Supercapacitors

2015 ◽  
Vol 1094 ◽  
pp. 222-228
Author(s):  
Lei Zhou ◽  
Da Wei He ◽  
Hong Lu Wu ◽  
Zeng Hui Qiu
Keyword(s):  
Carbon Nanotubes ◽  
Specific Capacitance ◽  
Multiwalled Carbon Nanotubes ◽  
Synthesis Method ◽  
Three Dimensional ◽  
X Ray Diffraction ◽  
Multiwalled Carbon ◽  
X Ray ◽  
Transmission Electron ◽  
Reduced Graphene

A facile synthesis method of three dimensional reduced graphene oxide (RGO)/multiwalled carbon nanotubes (MWCNTs) hydrogel was introduced. Hydrogel samples which were characterized by scanning electron microscope (SEM), transmission electron microscopy (TEM) and examined by X-ray diffraction (XRD) have been used as the electrode of supercapacitor. Cyclic voltammetry (CV) and galvanostatic charge-discharge (GCD) were used to investigate the Supercapacitors which we have fabricated. Because MWCNTs inserting into layers of RGO homogeneously prevent the layers of RGO from stacking and enlarge the specific surface area of graphene, the specific capacitance of RGO/MWCNTs material has been greatly improved. At the current density of 0.2A/g, the specific capacitance of RGO/MWCNTs electrode is about 176F/g, which means a 52% increasement compared to which of pure RGO material electrode. And the specific capacitance of RGO/MWCNTs also achieves a good rate property.

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