Organic compound gas detector based on polylactic acid/poly (styrene‐co‐acrylonitrile)/multi‐walled carbon nanotube blend composite with co‐continuous microstructure

2021 ◽  
Author(s):  
Payam Molla‐Abbasi
Keyword(s):  
Carbon Nanotube ◽  
Organic Compound ◽  
Polylactic Acid ◽  
Multi Walled Carbon Nanotube ◽  
Gas Detector

scholarly journals The Electric-Field-Driven Fusion Jetting 3D Printing for Fabricating High Resolution Polylactic Acid/Multi-Walled Carbon Nanotube Composite Micro-Scale Structures

Micromachines ◽  
2020 ◽  
Vol 11 (12) ◽  
pp. 1132
Author(s):  
Xiaoqiang Li ◽  
Guangming Zhang ◽  
Wenhai Li ◽  
Zun Yu ◽  
Kun Yang ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
High Resolution ◽  
3D Printing ◽  
Electric Field ◽  
Polylactic Acid ◽  
Line Width ◽  
Micro Scale ◽  
Biomimetic Scaffolds ◽  
Multi Walled Carbon Nanotube ◽  
Scale Structures

Existing 3D printing techniques are still facing the challenge of low resolution for fabricating polymer matrix composites, inhibiting the wide engineering applications for the biomedical engineering (biomimetic scaffolds), micro fuel cells, and micro-electronics. In order to achieve high resolution fabrication of polylactic acid (PLA)/multi-walled carbon nanotube (MWCNT) composites, this paper presents an electric-field-driven (EFD) fusion jetting 3D printing method by combining the mixing effect and material feeding of the micro-screw and the necking effect of Taylor cone by the EFD. The effects of main process parameters (the carbon loading, the voltage, the screw speed, and the printing speed) on the line width and the printing quality were studied and optimized. To demonstrate the printing capability of this proposed method, meshes with line width of 30 µm to 100 μm and 1 wt.% to 5 wt.% MWCNT for the application of conductive biomimetic scaffold and the anisotropic flexible meshes were prepared. The electrical properties were investigated to present the frequency dependence of the alternating current conductivity and the dielectric loss (tanδ), and the microstructures of printed structures demonstrated the uniformly dispersed MWCNT in PLA matrix. Therefore, it provides a new solution to fabricate micro-scale structures of composite materials, especially the 3D conductive biomimetic scaffolds.

Preparation, characterization and crystallization kinetics of Kenaf fiber/multi-walled carbon nanotube/polylactic acid (PLA) green composites

2017 ◽  
Vol 196 ◽  
pp. 249-255 ◽  
Author(s):  
Po-Yuan Chen ◽  
Hong-Yuan Lian ◽  
Yeng-Fong Shih ◽  
Su-Mei Chen-Wei ◽  
Ru-Jong Jeng
Keyword(s):  
Carbon Nanotube ◽  
Polylactic Acid ◽  
Crystallization Kinetics ◽  
Green Composites ◽  
Kenaf Fiber ◽  
Multi Walled Carbon Nanotube ◽  
Kinetics Of

scholarly journals Properties and mechanism of antistatic biodegradable polylactic acid/multi-walled carbon nanotube composites

2020 ◽  
Vol 15 ◽  
pp. 155892502096881
Author(s):  
Lisha Pan ◽  
Qiaoqiang Lv ◽  
Nai Xu
Keyword(s):  
Carbon Nanotube ◽  
Polylactic Acid ◽  
Volume Resistivity ◽  
Composite Matrix ◽  
Elongation At Break ◽  
Multi Walled Carbon Nanotube ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
Loading Amount ◽  
Mwcnt Loading

In this study, antistatic biodegradable polylactic acid (PLA)/multi-walled carbon nanotube (PLA/MWCNT) composites were prepared by the melt-blending of MWCNT with PLA. The conductive, mechanical, thermal properties and microstructure of the PLA/MWCNT composites were investigated. Results revealed that with the loading of 1.0 to 1.5 wt% of MWCNT, the tensile strength, elongation at break, and crystallinity of the composites slightly increase, followed by a downward trend with the further increase in the loading amount of MWCNT. With the increase in the MWCNT loading amount to 3.0%, the volume resistivity and surface resistivity of the composites were reduced by nine orders of magnitude. According to the internal microstructure of PLA/MWCNT, by the loading of 1.5 wt% of MWCNT, the MWCNT formed a conductive network in the composite matrix, reaching the percolation threshold. The new composties can be applicated in medical protective clothing for protecting the electronic instrument.

scholarly journals Photoluminescent Properties of Hydroxyapatite and Hydroxyapatite/Multi-Walled Carbon Nanotube Composites

Crystals ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 832
Author(s):  
Edna X. Figueroa-Rosales ◽  
Javier Martínez-Juárez ◽  
Esmeralda García-Díaz ◽  
Daniel Hernández-Cruz ◽  
Sergio A. Sabinas-Hernández ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Hexagonal Phase ◽  
Precipitation Method ◽  
X Ray Diffraction ◽  
X Ray ◽  
Multi Walled Carbon Nanotube ◽  
Nanotube Composites ◽  
Carbon Nanotube Composites ◽  
Co Precipitation ◽  
Functionalized Mwcnts

Hydroxyapatite (HAp) and hydroxyapatite/multi-walled carbon nanotube (MWCNT) composites were obtained by the co-precipitation method, followed by ultrasound-assisted and microwave radiation and thermal treatment at 250 °C. X-ray diffraction (XRD) confirmed the presence of a hexagonal phase in all the samples, while Fourier-transform infrared (FTIR) spectroscopy elucidated the interaction between HAp and MWCNTs. The photoluminescent technique revealed that HAp and the composite with non-functionalized MWCNTs present a blue luminescence, while the composite with functionalized MWCNTs, under UV-vis radiation shows an intense white emission. These findings allowed presentation of a proposal for the use of HAp and HAp with functionalized MWCNTs as potential materials for optoelectronic and medical applications.

scholarly journals A Novel Mechanism Underlying Multi-walled Carbon Nanotube-Triggered Tomato Lateral Root Formation: the Involvement of Nitric Oxide

2020 ◽  
Vol 15 (1) ◽  
Author(s):  
Zeyu Cao ◽  
Heng Zhou ◽  
Lingshuai Kong ◽  
Longna Li ◽  
Rong Wang ◽  
...  
Keyword(s):  
Nitric Oxide ◽  
Carbon Nanotube ◽  
Lateral Root ◽  
Root Formation ◽  
Lateral Root Formation ◽  
Multi Walled Carbon Nanotube

Adsorption performance of multi-walled carbon nanotube-SiO2 adsorbent for toluene

2021 ◽  
Vol 49 (6) ◽  
pp. 861-872
Author(s):  
Wei LIU ◽  
Zhuang LI ◽  
Shao-peng ZHANG ◽  
Wei-wei JIAN ◽  
Dan-zhu MA
Keyword(s):  
Carbon Nanotube ◽  
Adsorption Performance ◽  
Multi Walled Carbon Nanotube
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