scholarly journals Preparation and Assessment of Nanocomposites Based on Natural Rubber Latex Reinforced With Multiwall Carbon Nanotubes for Gamma Rays Shielding Applications

2021 ◽  
Author(s):  
A. Abdeldaym ◽  
M. A. Elhady
Keyword(s):  
Carbon Nanotubes ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Multiwall Carbon Nanotubes ◽  
Radiation Shielding ◽  
Nanocomposite Films ◽  
Rubber Matrix ◽  
The Matrix ◽  
Multi Walled Carbon Nanotubes ◽  
Shielding Properties

Abstract Reinforcement of the flexible shielding properties of natural rubber (NRL) was achieved through various content Multi-walled carbon nanotubes (MWCNTs) prepared from a simple solution using mixing method. Thereafter, a host of evaluative tests, using different techniques were carried to check the structural, morphological, mechanical and electrical conformity of the MWCNTs in the natural rubber matrix. More notably, the results from the x-ray diffraction (XRD), Scanning electron microscopy (SEM) and Fourier-transform infrared spectroscopy (FTIR) revealed that the nanocomposites have been successfully prepared, making them fitting to impact significant improvement on the mechanical strength of the matrix. The evaluation of the formation of MWCNT networks in the matrix, which gives insight into the nanocomposites' electrical conductivity, also showed agreeable results as the linear attenuation coefficients (l) and half-value thickness (HVT) for NRL/MWCNTs nanocomposite films were investigated . Thus, from the foregoing series of results, it can be concluded that nanocomposite films offer promising radiation-shielding properties.

scholarly journals Preparation of multiwall carbon nanotubes (MWCNTs) stabilised by highly branched hydrocarbon surfactants and dispersed in natural rubber latex nanocomposites

2014 ◽  
Vol 292 (11) ◽  
pp. 3013-3023 ◽  
Author(s):  
Azmi Mohamed ◽  
Argo Khoirul Anas ◽  
Suriani Abu Bakar ◽  
Azira Abd. Aziz ◽  
Masanobu Sagisaka ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Multiwall Carbon Nanotubes ◽  
Rubber Latex ◽  
Multiwall Carbon

scholarly journals The Effect of High Loaded Multiwall Carbon Nanotubes in Natural Rubber and Their Nonlinear Material Constants

2017 ◽  
Vol 2017 ◽  
pp. 1-15 ◽  
Author(s):  
Natarajan Elango ◽  
N. Srinivasa Gupta ◽  
Yu Lih Jiun ◽  
Alireza Golshahr
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Natural Rubber ◽  
Multiwall Carbon Nanotubes ◽  
Nonlinear Material ◽  
Rubber Matrix ◽  
High Dispersion ◽  
Elongation At Break ◽  
Material Constants ◽  
Multiwall Carbon

The aim of this paper is to study the high load of multiwall carbon nanotubes (MWCNTs) in natural rubber (NR) matrix. Firstly, the rubber matrix, fillers, and crosslinker are thoroughly mixed together in two-roll mill. Rheological tests are done from which scorch time, cure time, and cure index are estimated. The kneaded mixer is then compression molded, dumb bell samples as per ASTM D412 are prepared, and tensile strength, tensile modulus, elongation at break, and hardness are measured. It is noticed that NR/30% MWCNT has shown the highest tensile strength of 23.38 MPa and Shore A hardness of 90, which is 78.18% and 91.5%, respectively, higher than the unfilled NR. The increase in strength and hardness, the ductility loss, and decrease in elongation at break are observed upon increase in filler. FTIR, SEM, and AFM examinations are done and the results show high dispersion of nanofillers and strong interfacial interaction with rubber, which is responsible for overall enhancement in mechanical properties of the nanocomposites. Furthermore, the nonlinear material constants are evaluated through extended tube model and corresponding nonlinear material constants of different filler compositions are presented for the designers to use them in their component design and analysis.

scholarly journals Enhanced dispersion of multiwall carbon nanotubes in natural rubber latex nanocomposites by surfactants bearing phenyl groups

2015 ◽  
Vol 455 ◽  
pp. 179-187 ◽  
Author(s):  
Azmi Mohamed ◽  
Argo Khoirul Anas ◽  
Suriani Abu Bakar ◽  
Tretya Ardyani ◽  
Wan Manshol W. Zin ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Multiwall Carbon Nanotubes ◽  
Rubber Latex ◽  
Multiwall Carbon

scholarly journals Mechanical and Functional Properties of Novel Biobased Poly(decylene-2,5-furanoate)/Carbon Nanotubes Nanocomposite Films

Polymers ◽  
2020 ◽  
Vol 12 (11) ◽  
pp. 2459
Author(s):  
Giulia Fredi ◽  
Andrea Dorigato ◽  
Mauro Bortolotti ◽  
Alessandro Pegoretti ◽  
Dimitrios N. Bikiaris
Keyword(s):  
Carbon Nanotubes ◽  
Mechanical Performance ◽  
Rietveld Analysis ◽  
Nanocomposite Films ◽  
Scanning Calorimetry ◽  
Homogeneous Microstructure ◽  
Microstructural Investigation ◽  
Crystallinity Degree ◽  
The Matrix ◽  
Multi Walled Carbon Nanotubes

The present work investigates the microstructural, thermo-mechanical, and electrical properties of a promising, but still not thoroughly studied, biobased polymer, i.e., poly(decylene furanoate) (PDeF), and its performance when multi-walled carbon nanotubes (CNTs) are added. After sample preparation by solution mixing and film casting, the microstructural investigation evidences that the fracture surface becomes smoother and more homogeneous with a small fraction of CNTs, and that the production process is suitable to achieve good disentanglement and dispersion of CNTs within the matrix, although some aggregates are still observable. CNTs act as nucleating agents for PDeF crystals, as evidenced by differential scanning calorimetry, as the crystallinity degree increases from 43.2% of neat PDeF to 55.0% with a CNT content of 2 phr, while the crystallization temperature increases from 68.4 °C of PDeF to 91.7 °C of PDeF-CNT-2. A similar trend in crystallinity is confirmed by X-ray diffraction, after detailed Rietveld analysis with a three-phase model. CNTs also remarkably improve the mechanical performance of the bioderived polymer, as the elastic modulus increases up to 123% and the stress at break up to 131%. The strain at break also increases by +71% when a small amount of 0.25 phr of CNTs are added, which is probably the consequence of a more homogeneous microstructure. The long-term mechanical performance is also improved upon CNT addition, as the creep compliance decreases considerably, which was observed for both the elastic and the viscoelastic component. Finally, the films become electrically dissipative for a CNT content of 1 phr and conductive for a CNT amount of 2 phr. This study contributes to highlight the properties of bioderived furan-based polymer PDeF and evidences the potential of CNTs as a promising nanofiller for this matrix.

Radiation Vulcanization of Natural Rubber Latex Loaded with Carbon Nanotubes

2010 ◽  
Vol 18 (1) ◽  
pp. 56-71 ◽  
Author(s):  
Muataz Ali Atieh ◽  
Nazif Nazir ◽  
Faridah Yusof ◽  
Mohammed Fettouhi ◽  
Chantara Thevy Ratnam ◽  
...  
Keyword(s):  
Carbon Nanotubes ◽  
Natural Rubber ◽  
Natural Rubber Latex ◽  
Rubber Latex
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