Irradiation Modification of Epoxidized Natural Rubber/Ethylene Vinyl Acetate/Carbon Nanotubes Nanocomposites

2011 ◽  
Vol 364 ◽  
pp. 427-433 ◽  
Author(s):  
Mohamad Yatim Norazlina ◽  
Yusof Faridah ◽  
Chantara Thevy Ratnam ◽  
Iis Sopyan
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Electron Beam ◽  
Natural Rubber ◽  
Vinyl Acetate ◽  
Dose Range ◽  
Ethylene Vinyl Acetate ◽  
Epoxidized Natural Rubber ◽  
Beam Radiation ◽  
Elongation At Break

The effect of irradiation on the mechanical properties of Epoxidized Natural Rubber/Ethylene Vinyl Acetate/Carbon Nanotubes (ENR/EVA/CNTs) nanocomposites were investigated. CNTs at various amount (2, 3, 4 and 6 wt%) were incorporated into ENR50 by solvent casting method. The ENR/CNTs were then blended with EVA by mixing in a Brabender Plasticoder at 120°C. Next, the samples were irradiated by using electron beam with 3 MeV electron beam machine in a dose range of 50 to 200 kGy. The mechanical properties such as tensile strength (Ts), modulus at 100% elongation (M100), elongation at break (Eb) and hardness of reinforced ENR/EVA/CNTs nanocomposites were studied as a function of radiation dose. It was found that, the Ts and M100 has increased almost 2 times compared to the nanocomposites without irradiation up to 150 kGy dose of radiation, and a downward trend thereafter. Gel fraction further confirmed the powerful energy of electron beam radiation result in irradiation-induced crosslinking and further enhanced mechanical properties of the nanocomposites.

Irradiation Modification of Epoxidized Natural Rubber/Ethylene Vinyl Acetate/Carbon Nanotubes Nanocomposites

2011 ◽  
Vol 364 ◽  
pp. 196-201 ◽  
Author(s):  
Mohamad Yatim Norazlina ◽  
Yusof Faridah ◽  
Chantara Thevy Ratnam ◽  
Iis Sopyan
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Electron Beam ◽  
Natural Rubber ◽  
Vinyl Acetate ◽  
Dose Range ◽  
Ethylene Vinyl Acetate ◽  
Epoxidized Natural Rubber ◽  
Beam Radiation ◽  
Elongation At Break

The effect of irradiation on the mechanical properties of Epoxidized Natural Rubber/Ethylene Vinyl Acetate/Carbon Nanotubes (ENR/EVA/CNTs) nanocomposites were investigated. CNTs at various amount (2, 3, 4 and 6 wt%) were incorporated into ENR50 by solvent casting method. The ENR/CNTs were then blended with EVA by mixing in a Brabender Plasticoder at 120°C. Next, the samples were irradiated by using electron beam with 3 MeV electron beam machine in a dose range of 50 to 200 kGy. The mechanical properties such as tensile strength (Ts), modulus at 100% elongation (M100), elongation at break (Eb) and hardness of reinforced ENR/EVA/CNTs nanocomposites were studied as a function of radiation dose. It was found that, the Ts and M100 has increased almost 2 times compared to the nanocomposites without irradiation up to 150 kGy dose of radiation, and a downward trend thereafter. Gel fraction further confirmed the powerful energy of electron beam radiation result in irradiation-induced crosslinking and further enhanced mechanical properties of the nanocomposites.

Tensile Properties and Morphology of Irradiated EVA/ENR-50/Sepiolite Nanocomposites

2016 ◽  
Vol 694 ◽  
pp. 218-222 ◽  
Author(s):  
Mohd Shahrulnizam Ahmad ◽  
Zurina Mohamad ◽  
Chantara Thevy Ratnam ◽  
Amirah Kamal Rudin
Keyword(s):  
Mechanical Properties ◽  
Electron Beam ◽  
Natural Rubber ◽  
Tensile Properties ◽  
Vinyl Acetate ◽  
Irradiation Dose ◽  
Dose Range ◽  
Epoxidized Natural Rubber ◽  
Beam Radiation ◽  
Electron Beam Radiation

The effects of sepiolite nanofiller addition and irradiation modification on the tensile properties of epoxidized natural rubber (ENR-50)/ehylene vinyl acetate (EVA)/Sepiolite nanocomposites were investigated. The ENR-50/EVA/Sepiolite was blended by mixing in a Brabender Plastigraph at 120 °C. The samples were irradiated by using electron beam at a dose range of 50 to 200 kGy. The effect on the tensile properties and morphology were investigated as a function of sepiolite content and irradiation dose. Electron beam radiation produced an irradiation-induced crosslinking and further enhanced mechanical properties of the nanocomposites. The tensile properties of irradiated ENR-50/EVA blend were improved by the addition of sepiolite at 4 phr.

Effect of Isophthalic Acid-Maleic Anhydride (IAMA) as a Compatibilizer on Tensile Properties and Swelling Behavior of Ethylene Vinyl Acetate (EVA)/Natural Rubber (NR)/Potash Feldspar Composites

2014 ◽  
Vol 679 ◽  
pp. 76-80
Author(s):  
S.H. Ho ◽  
A.Ghani Supri ◽  
Pei Leng Teh
Keyword(s):  
Maleic Anhydride ◽  
Natural Rubber ◽  
Tensile Properties ◽  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Swelling Behavior ◽  
Rotor Speed ◽  
Potash Feldspar ◽  
Elongation At Break ◽  
Lower Elongation

The effect of isophathalic acid-maleic anhydride (IAMA) as a compatibilizer on the tensile properties and swelling behavior of ethylene vinyl acetate /natural rubber/ feldspar (EVA/NR/PF) composites were studied. The EVA/NR/PF composites with and without IAMA were prepared using Brabender Plasticoder at 160oC with 50rpm rotor speed. The results indicated that EVA/NR/PF/IAMA showed higher value of tensile strength and M100 but lower elongation at break and percentage mass swell compared to EVA/NR/PF composites.

Effect of Curing System on Morphological, Rheological, Thermal and Mechanical Properties of Thermoplastic Vulcanizates Based on Epoxidized Natural Rubber and Polypropylene

2012 ◽  
Vol 602-604 ◽  
pp. 690-695
Author(s):  
Hua Dong Wang ◽  
Rui Wang ◽  
Mao Fang Huang ◽  
Qi Yang
Keyword(s):  
Mechanical Properties ◽  
Thermal Stability ◽  
Tensile Strength ◽  
Natural Rubber ◽  
Epoxidized Natural Rubber ◽  
Thermal And Mechanical Properties ◽  
Rheological Analysis ◽  
Elongation At Break ◽  
Thermoplastic Vulcanizates ◽  
Internal Mixer

Thermoplastic vulcanizates (TPVs) based on epoxidized natural rubber (ENR) and polypropylene (PP) were prepared in an internal mixer at 180°C. The effects of curing systems (i.e., sulfur and peroxide) on morphological, rheological, thermal and mechanical properties were studied. It is found that the sulfur cured TPVs show higher tensile strength, tear strength and elongation at break than those cured with the DCP systems. The rheological analysis indicates that TPVs cured with DCP system show lower apparent shear viscosity than those with sulfur system. SEM studies show that TPVs vulcanized with DCP system exhibit smaller and finely dispersed rubber domains, which provides it higher thermal stability than sulfur cured TPVs.

Effect of Polyethylene Grafted Maleic Anhydride (PEgMAH) on Tensile Properties and Swelling Behavior of Ethylene Vinyl Acetate (EVA)/ Natural Rubber (NR)/ Feldspar Composites

2014 ◽  
Vol 554 ◽  
pp. 141-144 ◽  
Author(s):  
S.H. Ho ◽  
A.Ghani Supri ◽  
Pei Leng Teh
Keyword(s):  
Tensile Strength ◽  
Maleic Anhydride ◽  
Natural Rubber ◽  
Tensile Properties ◽  
Vinyl Acetate ◽  
Ethylene Vinyl Acetate ◽  
Swelling Behavior ◽  
Rotor Speed ◽  
Elongation At Break ◽  
Lower Elongation

The effects of polyethylene grafted maleic anhydride (PEgMAH) as a compatibilizer on the tensile properties and swelling behavior of ethylene vinyl acetate /Natural Rubber/ Feldspar (EVA/NR/FP) composites were studied. The EVA/NR/FP composites with and without PEgMAH were prepared using Brabender Plasticoder at 160oC with 50rpm rotor speed. The results indicated that EVA/NR/FP/PEgMAH had higher value of tensile strength and M100 but lower elongation at break and percentage mass swell.

Cogon Grass Fiber-Epoxidized Natural Rubber Composites

2013 ◽  
Vol 747 ◽  
pp. 375-378 ◽  
Author(s):  
Chaiwat Ruksakulpiwat ◽  
Wasaphon Wanasut ◽  
Apikiat Singkum ◽  
Ruksakulpiwat Yupaporn
Keyword(s):  
Mechanical Properties ◽  
Tensile Strength ◽  
Natural Rubber ◽  
Acid Treatment ◽  
Treatment Time ◽  
Treatment Method ◽  
Epoxidized Natural Rubber ◽  
Rubber Composites ◽  
Elongation At Break ◽  
Natural Rubber Composites

This research shows a great potential of cogon grass fiber to be used as a reinforcement in epoxidized natural rubber composites. The thermal and mechanical properties of cogon grass fiber-epoxidized natural rubber composites were studied. The chemical treatment of cogon grass fiber to be used as a reinforcing filler was revealed. Effects of fiber treatment method and treatment time of cogon grass fiber on thermal properties of the fibers and their composites were elucidated. The addition of cogon grass fiber into epoxidized natural rubber (ENR) improved the mechanical properties of the composites.The result indicated that alkaline treatment followed by acid treatment of cogon grass fiber led to an increase in thermal decomposition temperature and mechanical properties of the composites more than that without acid treatment. With increasing the amount of fiber, tensile strength of ENR composites were significantly increased while elongation at break was insignificantly changed. ENR with the addition of 4-Amino-6-hydroxy-2-mercaptopyrimidine monohydrate as coupling agent (ENRC) was shown to have higher tensile strength, modulus at 200% elongation and elongation at break than ENR. Improved mechanical properties were also obtained in ENRC composites compared to those of ENR composites.

Sign in / Sign up

Export Citation Format

Share Document