Selective localisation of multi walled carbon nanotubes in polypropylene/natural rubber blends to reduce the percolation threshold

2015 ◽  
Vol 116 ◽  
pp. 9-17 ◽  
Author(s):  
Sharika Thankappan Nair ◽  
P. Poornima Vijayan ◽  
Priti Xavier ◽  
Suryasarathi Bose ◽  
Soney C. George ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Natural Rubber ◽  
Percolation Threshold ◽  
Rubber Blends ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes

Dielectric and Thermomechanical Properties of Polypropylene/Multi-Walled Carbon Nanotubes Nanocomposites

2007 ◽  
Vol 1056 ◽  
Author(s):  
A. Kanapitsas ◽  
E. Logakis ◽  
C. Pandis ◽  
I. Zuburtikudis ◽  
P. Pissis ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Percolation Threshold ◽  
Mechanical Analysis ◽  
Thermomechanical Properties ◽  
Dielectric Relaxation Spectroscopy ◽  
Melt Mixing ◽  
Polypropylene Nanocomposites ◽  
Multi Walled Carbon Nanotubes ◽  
Permittivity Measurements ◽  
Walled Carbon Nanotubes

ABSTRACTThe purpose of this work is to examine the dielectric, electrical and thermo-mechanical properties of multi-walled carbon nanotubes (MWCNT) filled polypropylene nanocomposites formed by melt-mixing. To that aim dielectric relaxation spectroscopy (DRS) and dymamic mechanical analysis (DTMA) were employed. The results are discussed in terms of nucleating action of MWCNT and interfacial polymer-filler interactions. Special attention is paid to percolation aspects by both ac conductivity measurements for the samples which are above the percolation threshold and permittivity measurements for the samples which are below percolation threshold.

Synergistic effect of multi walled carbon nanotubes and reduced graphene oxides in natural rubber for sensing application

Soft Matter ◽  
2013 ◽  
Vol 9 (43) ◽  
pp. 10343 ◽  
Author(s):  
Deepalekshmi Ponnamma ◽  
Kishor Kumar Sadasivuni ◽  
Michael Strankowski ◽  
Qipeng Guo ◽  
Sabu Thomas
Keyword(s):  
Carbon Nanotubes ◽  
Synergistic Effect ◽  
Natural Rubber ◽  
Graphene Oxides ◽  
Reduced Graphene ◽  
Multi Walled Carbon Nanotubes ◽  
Sensing Application ◽  
Reduced Graphene Oxides ◽  
Walled Carbon Nanotubes

Thermal Analysis of Polylactic Acid/Liquid Natural Rubber Reinforced with Multi-Walled Carbon Nanotubes

2016 ◽  
Vol 1133 ◽  
pp. 481-485 ◽  
Author(s):  
Adilah Mat Ali ◽  
Sahrim H. Ahmad
Keyword(s):  
Carbon Nanotubes ◽  
Thermal Properties ◽  
Natural Rubber ◽  
Polylactic Acid ◽  
Melt Blending ◽  
Blending Method ◽  
Liquid Natural Rubber ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes ◽  
Thermal Stability Of

This article studies the thermal properties of multi-walled carbon nanotubes (MWCNT) reinforced polylactic acid (PLA)/liquid natural rubber (LNR) blends which prepared via melt blending method. Various percentages (0.5, 1.5, 2.5, 3.5 and 4 wt%) of MWCNT were added into PLA/LNR blend. TGA shows that the addition of MWCNT into PLA/LNR blends helps to improve thermal stability of the PLA/LNR/MWCNT nanocomposites. DSC shows that the glass transition temperature increased when 0.5%, 1.5%, 2.5% and 3.5% of MWCNT was added to the PLA/LNR blend. The cold crystallization and melting temperature were reduced when MWCNT was added in the PLA/LNR blend systems. The SEM micrographs confirm the effect of good dispersion of 3.5wt% of MWCNT in PLA/LNR blend helps to promote well combined MWCNT-matrix networks and generate the synergistic effect of the system which is improved the thermal properties significantly.

The I-V Characteristics and Percolation Threshold of the Cement-Based Materials Filled with Multi-Walled Carbon Nanotubes

2009 ◽  
Vol 60-61 ◽  
pp. 36-39
Author(s):  
Jian Lin Luo ◽  
Zhong Dong Duan
Keyword(s):  
Carbon Nanotubes ◽  
Percolation Threshold ◽  
Near Field ◽  
Cement Matrix ◽  
Ultrasonic Dispersion ◽  
Integrated Network ◽  
Cement Based Materials ◽  
Multi Walled Carbon Nanotubes ◽  
Electrode Method ◽  
Walled Carbon Nanotubes

Some multi-walled carbon nanotubes (NMWTs) were firstly dispersed in aqueous solution with surfactant ultrasonic dispersion process, then mixed into cement matrix, casting six groups cement-based materials filled with varying NMWTs additions (nwt) (NFCMs), and as comparison, the plain referential cement paste was fabricated. The ampere-volt (I-V) characteristics and percolation threshold of this type of nanocomposites were focused by four-electrode method. Results show that, the I-V features of the reference has obvious nonlinearity due to polarized reaction within cement hydrated electrolytes after being induced by passing 0~±30 V voltages, those of the NFCMs with six different nwt still have somewhat nonlinear traits, which mainly attribute to the double-layer coatings between NMWTs and out-encapsulated cement hydration isolation. The resistivity (ρ) of the NFCM nanocomposite steadily decreases with the increment of nwt, which contributes to superior capabilities of charge transporter and near-field emission of NMWTs, and the overlapped chance of physical contacts between conducting aggregates of NMWTs and bulk matrix increases by nwt enhancing; although there is still some fluctuation on ρ, but it becomes weaker and weaker by nwt increasing. The percolation threshold of the NFCMs is nwt being 2.0%, and the integrated network pathways at micro-scale form between NMWTs each other through the correspondent NFCM, also revealed in microstructure.

scholarly journals Swelling and interfacial characterization of multi-walled carbon nanotubes/natural rubber composites

TANSO ◽  
2010 ◽  
Vol 2010 (244) ◽  
pp. 147-152 ◽  
Author(s):  
Kenji Takeuchi ◽  
Hiroyuki Ueki ◽  
Shigeki Inukai ◽  
Satoshi Iinou ◽  
Koji Jinnai ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Natural Rubber ◽  
Rubber Composites ◽  
Natural Rubber Composites ◽  
Multi Walled Carbon Nanotubes ◽  
Walled Carbon Nanotubes
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