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 Tensile Strength of Spinnable Multiwall Carbon Nanotubes

2011 ◽  
Vol 10 ◽  
pp. 2572-2578 ◽  
Author(s):  
N. Khandoker ◽  
S.C. Hawkins ◽  
R. Ibrahim ◽  
C.P. Huynh ◽  
F. Deng
Keyword(s):  
Carbon Nanotubes ◽  
Tensile Strength ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon

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 Water-swellable rubber blend from epoxidized natural rubber and superabsorbent polymer composite

2019 ◽  
Vol 36 (1) ◽  
pp. 63-77 ◽  
Author(s):  
Ajaman Adair ◽  
Azizon Kaesaman ◽  
Pairote Klinpituksa
Keyword(s):  
Weight Loss ◽  
Tensile Strength ◽  
Natural Rubber ◽  
Polymer Composite ◽  
Epoxidized Natural Rubber ◽  
Rubber Matrix ◽  
Water Absorbency ◽  
Superabsorbent Polymer ◽  
Elongation At Break ◽  
Water Swelling

Epoxidized natural rubber (ENR) and a superabsorbent polymer composite (SAPC) along with other minor components were mechanically blended in an internal mixer (Brabender Plasticorder) at 40°C and 60 r/min rotor speed with 80% fill factor. The SAPC was synthesized by grafting polyacrylamide onto hydroxyethyl cellulose backbones and adding bentonite clay. The first water-swelling behavior was investigated with alternative epoxidation levels of the ENR. Water-swellable rubber (WSR) performed well in terms of water absorbency, and weight loss was achieved with 50 mole% epoxidation level, so this ENR was chosen for the rubber matrix from which WSR was prepared with various contents of SAPC (0, 5, 10, 15, and 20 phr). The results indicated that SAPC loading positively affected water absorbency, which was resulted by increasing weight loss and loss of mechanical properties, such as tensile strength and elongation at break. However, the modulus increased with SAPC content. WSR formulated from ENR-50, SAPC, and other ingredients resulting in good water-swelling behaviors and modulus, while the tensile strength and elongation at break had opposition. SAPC was an important factor to control the overall WSR 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

Influence of Modified Cassava Peel Waste (CPW) Loading on Tensile Properties of Natural Rubber Latex (NRL) Products

2015 ◽  
Vol 1119 ◽  
pp. 342-346
Author(s):  
Hamidah Harahap ◽  
Kelvin Hadinatan ◽  
Adrian Hartanto ◽  
Elmer Surya ◽  
Indra Surya ◽  
...  
Keyword(s):  
Tensile Strength ◽  
Natural Rubber ◽  
Crosslink Density ◽  
Natural Rubber Latex ◽  
Tensile Modulus ◽  
Rubber Matrix ◽  
Tensile Fracture ◽  
Rubber Latex ◽  
Elongation At Break ◽  
Cassava Peel

Cassava peel is one of agricultural waste that abundantly found in environment. One approach to manage this waste is to apply it as filler in natural rubber latex. In this work, the cassava peel waste (CPW) was powdered and dispersed in alkanolamide-water dispersion system to modify its surface. The amount of fillers used was 0, 5, 10, 15, 20 and 25 phr (part per hundred rubber) and loaded in natural rubber latex (NRL) formulation system. The products then were formed by dipping method after the NRL formulation was pre-vulcanized at 70°C. The observed parameter includes crosslink density, tensile strength, tensile modulus and elongation at break. Scanning Electron Microscope (SEM) was used to study the morphology of tensile fracture in NRL film. The results show that 10 phr loading of modified fillers increases the crosslink density, tensile strength, and tensile modulus but decreases the elongation at break. SEM study also reveals that higher filler loading above 10 phr will create the agglomeration in rubber matrix.

Investigations on natural rubber filled with multiwall carbon nanotubes

2007 ◽  
Vol 14 (3) ◽  
pp. 215-228 ◽  
Author(s):  
Mélanie Kolodziej ◽  
Liliane Bokobza ◽  
Jean-Luc Bruneel
Keyword(s):  
Carbon Nanotubes ◽  
Natural Rubber ◽  
Multiwall Carbon Nanotubes ◽  
Multiwall Carbon
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