Highly enhanced mechanical properties in natural rubber prepared with a nanodiamond nanomatrix structure
| Autor: | Masao Sumita, Asangi Gannoruwa, Seiichi Kawahara |
|---|---|
| Rok vydání: | 2017 |
| Předmět: |
Materials science
Polymers and Plastics Organic Chemistry Chemical Linkage 02 engineering and technology Dynamic mechanical analysis Elasticity (physics) 010402 general chemistry 021001 nanoscience & nanotechnology 01 natural sciences 0104 chemical sciences Natural rubber Transmission electron microscopy visual_art Ultimate tensile strength Dynamic modulus Materials Chemistry visual_art.visual_art_medium Composite material 0210 nano-technology Nanodiamond |
| Zdroj: | Polymer. 126:40-47 |
| ISSN: | 0032-3861 |
| DOI: | 10.1016/j.polymer.2017.08.025 |
| Popis: | A nanodiamond nanomatrix structure is formed into natural rubber, generating not only entropic elasticity but also energetic elasticity. The radical reaction with tert-butylhydroperoxide (TBHP)/tetraethylenepentamine (TEPA) in the latex stage forms a chemical linkage between the nanodiamond and natural rubber particles after removing proteins from the rubber. To investigate the relationship between morphology and mechanical properties, the as-cast films prepared from nanodiamond-grafting deproteinized natural rubber (DPNR-ND) latex are subjected to transmission electron microscopy (TEM), tensile tests, and dynamic mechanical analyses. The nanodiamond nanomatrix structure markedly increases the tensile strength of natural rubber. The values of the storage modulus and loss modulus are about ten times higher than those of natural rubber in the rubbery plateau region when DPNR-ND contains 40 w/w% ND. Thus, an energetic elasticity is realized in conjunction with the entropic elasticity. |
| Databáze: | OpenAIRE |
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