Rheological behavior, electrical conductivity, and morphology of multi‐walled carbon nanotube filled poly(ethylene‐co‐vinyl acetate)/poly(methyl methacrylate) nanocomposites: Effect of nanofiller content

2021 ◽  
Author(s):  
Mohammad Razavi‐Nouri ◽  
Fatemeh Saeedi ◽  
Farshid Ziaee
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Methyl Methacrylate ◽  
Vinyl Acetate ◽  
Rheological Behavior ◽  
Poly Methyl Methacrylate ◽  
Multi Walled Carbon Nanotube ◽  
Poly Ethylene ◽  
Nanofiller Content

Improved electrical conductivity of very long multi-walled carbon nanotube bundle/poly (methyl methacrylate) composites

Carbon ◽  
2011 ◽  
Vol 49 (6) ◽  
pp. 2127-2133 ◽  
Author(s):  
Jun Seop Kim ◽  
Shin Je Cho ◽  
Kwang Seok Jeong ◽  
Young Chul Choi ◽  
Mun Seok Jeong
Keyword(s):  
Electrical Conductivity ◽  
Carbon Nanotube ◽  
Methyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
Multi Walled Carbon Nanotube ◽  
Nanotube Bundle

Formation of aramid-silica-grafted-multi-walled carbon nanotube-based nanofiber via the sol-gel route: thermal and mechanical profile of hybrids with poly(methyl methacrylate)

e-Polymers ◽  
2014 ◽  
Vol 14 (3) ◽  
pp. 177-185
Author(s):  
Ayesha Kausar
Keyword(s):  
Carbon Nanotube ◽  
Methyl Methacrylate ◽  
Sol Gel ◽  
Tensile Modulus ◽  
Electrospun Nanofibers ◽  
Decomposition Temperature ◽  
Filler Loading ◽  
Silica Network ◽  
Poly Methyl Methacrylate ◽  
Multi Walled Carbon Nanotube

AbstractIn this study, thermally and mechanically stable poly(methyl methacrylate) (PMMA)-based nanocomposites were produced through the reinforcement of electrospun aramid-silica-grafted multi-walled carbon nanotube-based nanofibers (MWCNT-Ar-Si). The multi-walled carbon nanotube was initially modified to prepare an isocyanatopropyltriethoxysilane-grafted MWCNT via the sol-gel route using 3-isocyanatopropyl-triethoxysilane and tetraethoxysilane (TEOS). The silica network was developed and linked to MWCNT by hydrolysis and condensation of TEOS. The said isocyanatopropyltriethoxysilane-grafted MWCNT was electrospun with the aramid solution. The electrospun MWCNT-Ar-Si nanofibers (0.1–1 wt.%) were then reinforced in a PMMA matrix. For comparative analysis, PMMA was also reinforced with 0.1–1 wt.% of aramid nanofibers. The tensile modulus of PMMA/MWCNT-Ar-Si 0.1 was 5.11 GPa, which was increased to 13.1 GPa in PMMA/MWCNT-Ar-Si 1. The 10% decomposition temperature of PMMA/MWCNT-Ar-Si 0.1–1 hybrids was in the range of 479–531°C. The glass transition temperature, determined from the maxima of tan δ data using dynamic mechanical thermal analysis, showed an increase with the filler loading and was maximum (301°C) for PMMA/MWCNT-Ar-Si 1 with 1 wt.% of MWCNT-Ar-Si nanofibers. In contrast, PMMA/Ar 0.1–1 hybrids showed lower values in the thermal and the mechanical profile depicting the combined effect of nanotube and aramid in electrospun nanofibers.

Multifunctional role of an ionic liquid in melt-blended poly(methyl methacrylate)/ multi-walled carbon nanotube nanocomposites

2012 ◽  
Vol 23 (25) ◽  
pp. 255702 ◽  
Author(s):  
Liping Zhao ◽  
Yongjin Li ◽  
Xiaojun Cao ◽  
Jichun You ◽  
Wenyong Dong
Keyword(s):  
Ionic Liquid ◽  
Carbon Nanotube ◽  
Methyl Methacrylate ◽  
Poly Methyl Methacrylate ◽  
Multi Walled Carbon Nanotube

Electrical Resistance Response of Carbon Nanotube / PMMA / PVAc Composite Sensors to Organic Vapours at Low Vapour Concentrations

2007 ◽  
Vol 334-335 ◽  
pp. 809-812
Author(s):  
Dong Lin Zhao ◽  
Hong Mei Chai ◽  
Yun Fang Liu ◽  
Zeng Min Shen
Keyword(s):  
Carbon Nanotubes ◽  
Carbon Nanotube ◽  
Methyl Methacrylate ◽  
Composite Film ◽  
Vinyl Acetate ◽  
Electrical Resistance ◽  
Resistance Response ◽  
Organic Vapors ◽  
Poly Methyl Methacrylate ◽  
Nanotube Composites

Thin films of poly(methyl methacrylate) (PMMA)，poly(vinyl acetate) (PVAc) and carbon nanotube composites were produced by different coating methods. The best way to produce the carbon nanotube / PMMA / PVAc composite film with conductive network is dispersing carbon nanotubes in PMMA and PVAc by ultrasonic and by solution casting. Electrical resistance responses of carbon nanotube / PMMA / PVAc composite sensors against various organic vapors at low concentrations are investigated. The experimental results indicate that the composites have high selectivity to various organic vapors at the same concentration. In addition, the electric resistance response of the composites against organic vapors takes place in step with their vapor adsorption procedure. Compatible blends of poly(methyl methacrylate) and poly(vinyl acetate) would be a good candidate to produce a series of electrically conducting carbon nanotubes composite film whose resistance is sensitive to the nature and concentration of an analyte in the vapor phase. The results indicate that the carbon nanotube / PMMA / PAVc composite film can be used as a novel organic vapor sensor to detect, quantify and discriminate various organic vapors.

scholarly journals Mechanical Improvement of Multi-Walled Carbon Nanotube/Poly (Methyl Methacrylate) Composites

2005 ◽  
Vol 297-300 ◽  
pp. 2545-2550 ◽  
Author(s):  
Hyun Chul Kim ◽  
Sang Eui Lee ◽  
Chun Gon Kim ◽  
Jung Ju Lee
Keyword(s):  
Carbon Nanotube ◽  
Methyl Methacrylate ◽  
Fiber Composites ◽  
Short Fiber ◽  
Reinforced Composites ◽  
Short Fibers ◽  
Sem Images ◽  
Poly Methyl Methacrylate ◽  
Multi Walled Carbon Nanotube ◽  
Loading Tests

Multi-walled carbon nanotube (MWNT)/poly (methyl methacrylate) composites were fabricated with the variation of the concentration rate of nanotubes by the solution casting. SEM images showed that the nanotubes were dispersed well throughout PMMA. Assuming that MWNTs in MWNT/PMMA composites were randomly oriented, the Tsai-Pagano equation, which can give the moduli of short fiber reinforced composites, was used to evaluate that of the MWNT/PMMA composite. For investigating mechanical properties of the MWNT/PMMA composite, tensile loading tests were performed, varying the concentration rate of the MWNTs. For each concentration rate of the MWNTs, at least 5 specimens of MWNT/PMMA composites were made and tested. As the concentration rate of the MWNTs increased from 0 to 0.15wt%, tensile strength and modulus of the MWNT/PMMA composites were improved by about 20% and 32%, respectively. However, the experimental results were not in agreement with what we estimated. Here are two reasons supposed. First, the MWNTs used in this research were not stretched straightly but entangled. It means that MWNTs cannot be assumed to be short fibers. Second, the concentration rate of the MWNTs is too small to be considered as short fiber composites.

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