Mechanical percolation in cellulose whisker nanocomposites
| Autor: | Véronique Favier, S. C. Shrivastava, Jean-Yves Cavaille, G. R. Canova |
|---|---|
| Rok vydání: | 1997 |
| Předmět: |
chemistry.chemical_classification
Materials science Nanocomposite Polymers and Plastics Whiskers General Chemistry Polymer Casting Condensed Matter::Soft Condensed Matter Shear modulus chemistry.chemical_compound chemistry Whisker Percolation Materials Chemistry Physics::Chemical Physics Composite material Cellulose |
| Zdroj: | Polymer Engineering & Science. 37:1732-1739 |
| ISSN: | 1548-2634 0032-3888 |
| DOI: | 10.1002/pen.11821 |
| Popis: | Nanocomposites obtained by casting a mixture of a latex and an aqueous suspension of cellulose whiskers have been studied. Their mechanical properties (e.g. shear modulus) are found to increase by more than three orders of magnitude in the rubbery state of the polymer matrix, when the whisker content is 6 wt%. This large and unusual effect is discussed on the basis of different types of mechanical models, including semi-phenomenological and numerical finite element calculations. It is concluded that cellulose whiskers form a rigid network linked by hydrogen bonds. The formation of this network is assumed to be governed by a percolation mechanism. |
| Databáze: | OpenAIRE |
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