Carbon nanotubes induced microstructure and mechanical properties changes in cocontinuous poly( L -lactide)/ethylene-co -vinyl acetate blends

2011 ◽  
Vol 23 (4) ◽  
pp. 783-790 ◽  
Author(s):  
Yunyun Shi ◽  
Yanli Li ◽  
Fangming Xiang ◽  
Ting Huang ◽  
Chen Chen ◽  
...  
Keyword(s):  
Mechanical Properties ◽  
Carbon Nanotubes ◽  
Vinyl Acetate ◽  
Microstructure And Mechanical Properties

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.

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