The Research on the Electrical Properties Change in Extrusion Molding of Resin Matrix Multi-Walled Carbon Nano Tubes Composites

2012 ◽  
Vol 443-444 ◽  
pp. 866-871
Author(s):  
Ling Sun ◽  
Mao Shun Chen ◽  
Xian Shu Zheng
Keyword(s):  
Electrical Properties ◽  
Low Cost ◽  
Test Sample ◽  
Extrusion Temperature ◽  
Resin Matrix ◽  
Cooling Mode ◽  
Multi Walled Carbon Nanotubes ◽  
Carbon Nano Tubes ◽  
Temperature Rate ◽  
Walled Carbon Nanotubes

Prepare poly butylene terephthalate (PBT)/multi-walled carbon nanotubes (MWNTs) composites through the method of melt blending. Then use low-cost single screw extruder to conduct experimental research and analysis on the extrusion test sample of PBT/MWNTs composites of different proportions under the conditions of changing the extrusion temperature, rate, cooling mode and so on. As a result, the process parameters of the better extrusion temperature, critical extrusion rate, and high-gloss molding etc. to reinforce the electrical properties of composites under low-cost experiment condition have been obtained. The experiment results also indicate that with the increasing of the MWNTs content, the surface resistivity of the composites shows a declining trend.

Effect of Sonication on the Stability of Nanofluids Based on the Mixture of Kapok Seeds Oil and Multi Walled Carbon Nanotubes

2016 ◽  
Vol 694 ◽  
pp. 213-217
Author(s):  
Wajid Ur Rehman ◽  
A.H. Bhat ◽  
A.A. Suliamon ◽  
Muhammad Irfan Khan
Keyword(s):  
Carbon Nanotubes ◽  
Edible Oils ◽  
Low Cost ◽  
Soxhlet Extraction ◽  
Environmental Pollution Problem ◽  
Multi Walled Carbon Nanotubes ◽  
Carbon Nano Tubes ◽  
The Stability ◽  
Two Stages ◽  
Walled Carbon Nanotubes

Environmental pollution problem and depletion of petroleum reserves have driven the researchers to use non-edible oils as a low cost feedstock. This work represents the preparation of nano fluids using kapok (ceiba pentandra) seeds oil (KSO) and multi walled carbon nano tubes (MWCNTs). The present study consists of two stages. The first step is the extraction of KSO through Soxhlet extraction using n-hexane as a solvent. The second step is the mixing of extracted oil with carbon nanotubes using sonicator, with different time intervals, to develop nanofluids. The visualization technique was used by capturing photographs to evaluate the stability of the nanofluids. The photographs showed good agreement for the stability of nanofluids for more than 1 week. KSO and prepared nanofluids were characterized by using Fourier transformed infra-red spectroscopy (FTIR) and scanning electron microscopy (SEM).

scholarly journals Development of Conductive Gelatine-Methacrylate Inks for Two-Photon Polymerisation

Polymers ◽  
2021 ◽  
Vol 13 (7) ◽  
pp. 1038
Author(s):  
Paola Sanjuan-Alberte ◽  
Jayasheelan Vaithilingam ◽  
Jonathan C. Moore ◽  
Ricky D. Wildman ◽  
Christopher J. Tuck ◽  
...  
Keyword(s):  
Electrical Properties ◽  
Electrochemical Impedance ◽  
Induced Pluripotent Stem Cell ◽  
Precise Control ◽  
Two Photon ◽  
Ability To Act ◽  
Multi Walled Carbon Nanotubes ◽  
Induced Pluripotent ◽  
Conductive Hydrogels ◽  
Walled Carbon Nanotubes

Conductive hydrogel-based materials are attracting considerable interest for bioelectronic applications due to their ability to act as more compatible soft interfaces between biological and electrical systems. Despite significant advances that are being achieved in the manufacture of hydrogels, precise control over the topographies and architectures remains challenging. In this work, we present for the first time a strategy to manufacture structures with resolutions in the micro-/nanoscale based on hydrogels with enhanced electrical properties. Gelatine methacrylate (GelMa)-based inks were formulated for two-photon polymerisation (2PP). The electrical properties of this material were improved, compared to pristine GelMa, by dispersion of multi-walled carbon nanotubes (MWCNTs) acting as conductive nanofillers, which was confirmed by electrochemical impedance spectroscopy and cyclic voltammetry. This material was also confirmed to support human induced pluripotent stem cell-derived cardiomyocyte (hPSC-CMs) viability and growth. Ultra-thin film structures of 10 µm thickness and scaffolds were manufactured by 2PP, demonstrating the potential of this method in areas spanning tissue engineering and bioelectronics. Though further developments in the instrumentation are required to manufacture more complex structures, this work presents an innovative approach to the manufacture of conductive hydrogels in extremely low resolution.

Novel ionic bioartificial muscles based on ionically crosslinked multi-walled carbon nanotubes-mediated bacterial cellulose membranes and PEDOT:PSS electrodes

2021 ◽  
Author(s):  
Yaofeng Wang ◽  
Fan Wang ◽  
Yang Kong ◽  
Lei Wang ◽  
Qinchuan Li
Keyword(s):  
Carbon Nanotubes ◽  
Bacterial Cellulose ◽  
Specific Capacitance ◽  
High Performance ◽  
Low Cost ◽  
Actuation Voltage ◽  
Fast Response ◽  
Bending Deformation ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Abstract High-performance bioartificial muscles with low-cost, large bending deformation, low actuation voltage, and fast response time have drawn extensive attention as the development of human-friendly electronics in recent years. Here, we report a high-performance ionic bioartificial muscle based on the bacterial cellulose (BC)/ionic liquid (IL)/multi-walled carbon nanotubes (MWCNT) nanocomposite membrane and PEDOT:PSS electrode. The developed ionic actuator exhibits excellent electro-chemo-mechanical properties, which are ascribed to its high ionic conductivity, large specific capacitance, and ionically crosslinked structure resulting from the strong ionic interaction and physical crosslinking among BC, IL, and MWCNT. In particular, the proposed BC-IL-MWCNT (0.10 wt%) nanocomposite exhibited significant increments of Young's modulus up to 75% and specific capacitance up to 77%, leading to 2.5 times larger bending deformation than that of the BC-IL actuator. More interestingly, bioinspired applications containing artificial soft robotic finger and grapple robot were successfully demonstrated based on high-performance BC-IL-MWCNT actuator with excellent sensitivity and controllability. Thus, the newly proposed BC-IL-MWCNT bioartificial muscle will offer a viable pathway for developing next-generation artificial muscles, soft robotics, wearable electronic products, flexible tactile devices, and biomedical instruments.

Iron- and iron oxide-filled multi-walled carbon nanotubes: Electrical properties and memory devices

2007 ◽  
Vol 444 (4-6) ◽  
pp. 304-308 ◽  
Author(s):  
Carlos E. Cava ◽  
Ricardo Possagno ◽  
Mariane C. Schnitzler ◽  
Paulo C. Roman ◽  
Marcela M. Oliveira ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Iron Oxide ◽  
Electrical Properties ◽  
Memory Devices ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

scholarly journals Multi-Functional Properties of MWCNT/PVA Buckypapers Fabricated by Vacuum Filtration Combined with Hot Press: Thermal, Electrical and Electromagnetic Shielding

Nanomaterials ◽  
2020 ◽  
Vol 10 (12) ◽  
pp. 2503
Author(s):  
Liyang Cao ◽  
Yongsheng Liu ◽  
Jing Wang ◽  
Yu Pan ◽  
Yunhai Zhang ◽  
...  
Keyword(s):  
Electromagnetic Interference ◽  
Low Cost ◽  
Hot Press ◽  
Vacuum Filtration ◽  
Finite Element Software ◽  
Multi Walled Carbon Nanotubes ◽  
Press Method ◽  
Thermal And Electrical Properties ◽  
Walled Carbon Nanotubes ◽  
Homogeneous Temperature

The applications of pure multi-walled carbon nanotubes (MWCNTs) buckypapers are still limited due to their unavoidable micro/nano-sized pores structures. In this work, polyvinyl alcohol (PVA) was added to a uniform MWCNTs suspension to form MWCNT/PVA buckypapers by vacuum infiltration combined with a hot press method. The results showed an improvement in the thermal, electrical, and electromagnetic interference (EMI) shielding properties due to the formation of dense MWCNTs networks. The thermal and electrical properties rose from 1.394 W/m·k to 2.473 W/m·k and 463.5 S/m to 714.3 S/m, respectively. The EMI performance reached 27.08 dB. On the other hand, ABAQUS finite element software was used to simulate the coupled temperature-displacement performance. The electronic component module with buckypapers revealed a homogeneous temperature and thermal stress distribution. In sum, the proposed method looks promising for the easy preparation of multi-functional nanocomposites at low-cost.

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