Effect of polyaniline-coated carbon nanotube and nanosilver hybrid nanoparticles on the dielectric properties of poly(methyl methacrylate) nanocomposites

2018 ◽  
Vol 39 (S2) ◽  
pp. E1294-E1305 ◽  
Author(s):  
Satyabhama Sahu ◽  
Amrita Pritam Sahoo ◽  
Lipsa Shubhadarshinee ◽  
Ramakrishna D. S ◽  
Aruna Kumar Barick
Keyword(s):  
Carbon Nanotube ◽  
Dielectric Properties ◽  
Methyl Methacrylate ◽  
Hybrid Nanoparticles ◽  
Poly Methyl Methacrylate ◽  
Coated Carbon

Plasticizer effect on dielectric properties of poly(methyl methacrylate)/titanium dioxide composites

2021 ◽  
pp. 096739112110147
Author(s):  
Ufuk Abaci ◽  
H Yuksel Guney ◽  
Mesut Yilmazoglu
Keyword(s):  
Dielectric Constant ◽  
Titanium Dioxide ◽  
Dielectric Properties ◽  
Methyl Methacrylate ◽  
Pure Pmma ◽  
Segmental Mobility ◽  
Scanning Calorimetry ◽  
Poly Methyl Methacrylate ◽  
Casting Technique ◽  
Lcr Meter

The effect of plasticizer on dielectric properties of poly(methyl methacrylate) (PMMA)/titanium dioxide (TiO2) composites was investigated. Propylene carbonate (PC) was used as plasticizer in the samples which were prepared with the conventional solvent casting technique. Scanning Electron Microscopy with Energy Dispersive X-Ray Analysis (SEM-EDX) and Differential scanning calorimetry (DSC) analyses and LCR Meter measurements (performed between 300 K and 400 K), were conducted to examine the properties of the composites. With the addition of plasticizer, the thermal properties have changed and the dielectric constant of the composite has increased significantly. The glass transition temperature of pure PMMA measured 121.7°C and this value did not change significantly with the addition of TiO2, however, 112°C was measured in the sample with the addition 4 ml of PC. While the dielectric constant of pure PMMA was 3.64, the ε′ value increased to 5.66 with the addition of TiO2 and reached 12.6 with the addition of 4 ml PC. These changes have been attributed to increase in amorphous ratio that facilitates polymer dipolar and segmental mobility.

Effect of carbon nanotube length on the piezoresistive response of poly (methyl methacrylate) nanocomposites

2019 ◽  
Vol 110 ◽  
pp. 394-402 ◽  
Author(s):  
F. Avilés ◽  
A.I. Oliva ◽  
G. Ventura ◽  
A. May-Pat ◽  
A.I. Oliva-Avilés
Keyword(s):  
Carbon Nanotube ◽  
Methyl Methacrylate ◽  
Poly Methyl Methacrylate

BiFeO3/poly(methyl methacrylate) nanocomposite films: A study on magnetic and dielectric properties

2014 ◽  
Vol 104 (4) ◽  
pp. 042902 ◽  
Author(s):  
Anju Ahlawat ◽  
S. Satapathy ◽  
Shushmita Bhartiya ◽  
M. K. Singh ◽  
R. J. Choudhary ◽  
...  
Keyword(s):  
Dielectric Properties ◽  
Methyl Methacrylate ◽  
Nanocomposite Films ◽  
Poly Methyl Methacrylate ◽  
Magnetic And Dielectric Properties

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.

Carbon nanotube-based thermoplastic polyurethane-poly(methyl methacrylate) nanocomposites for pressure sensing applications

2016 ◽  
Vol 56 (9) ◽  
pp. 1031-1036 ◽  
Author(s):  
Syed Muhammad Imran ◽  
Godlisten N. Shao ◽  
M. Salman Haider ◽  
Hae Jin Hwang ◽  
Yong-Ho Choa ◽  
...  
Keyword(s):  
Carbon Nanotube ◽  
Methyl Methacrylate ◽  
Thermoplastic Polyurethane ◽  
Pressure Sensing ◽  
Poly Methyl Methacrylate ◽  
Sensing Applications

Electrical and Rheological Properties of Double Percolated Poly(methyl methacrylate)/Multiwalled Carbon Nanotube Nanocomposites

2007 ◽  
Vol 7 (11) ◽  
pp. 3847-3851 ◽  
Author(s):  
Sung-Hun Jin ◽  
Dai-Soo Lee
Keyword(s):  
Carbon Nanotube ◽  
Methyl Methacrylate ◽  
Rheological Properties ◽  
Critical Concentration ◽  
Threshold Concentration ◽  
Multiwalled Carbon Nanotube ◽  
Multiwalled Carbon ◽  
Poly Methyl Methacrylate ◽  
Critical Concentrations ◽  
Double Percolation

Electrical and rheological properties of nanocomposites based on poly(methyl methacrylate) (PMMA) and multiwalled carbon nanotube (MWCNT) were studied from view points of double percolation by adding crosslinked methyl methacrylate-butadiene-styrene (MBS) copolymer particles to lower percolation threshold concentration of MWCNTs. It was found that the critical concentrations of MWCNTs for the percolation in the nanocomposites decrease and then increase with increasing the MBS contents of the nanocomposites. It is postulated that the addition of MBS at low concentrations results in double percolation of MWCNT and the significant decrease of critical concentration for the percolations. However, adding MBS particles in large amounts results in limited space for the distribution of MWCNTs and less efficient dispersion of the MWCNTs and the increase of the critical concentrations of MWCNTs for the percolations. Rheological properties and change of Tgs reflect large interfacial areas in the well dispersed nanocomposite and were also interpreted to support the speculations for the effects of MBS contents and MWCNT concentrations of PMMA/MWCNT nanocomposites.

Sign in / Sign up

Export Citation Format

Share Document