Fracture behavior of boehmite-filled polypropylene block copolymer nanocomposites as assessed by the essential work of fracture concept
| Autor: | László Mészáros, V. M. Khumalo, Ralf Thomann, J. Karger-Kocsis, Tamás Turcsán |
|---|---|
| Rok vydání: | 2014 |
| Předmět: |
Polypropylene
Boehmite Materials science Yield (engineering) Nanocomposite Polymers and Plastics Scanning electron microscope General Chemistry Surfaces Coatings and Films chemistry.chemical_compound Fracture toughness chemistry Ultimate tensile strength Materials Chemistry Composite material Necking |
| Zdroj: | Journal of Applied Polymer Science. 131 |
| ISSN: | 0021-8995 |
| DOI: | 10.1002/app.40447 |
| Popis: | The essential work of fracture (EWF) method was adapted to determine the fracture toughness of poly(propylene-block- ethylene) (EPBC) based nanocomposites with different amounts (from 0 up to 5 wt %) of synthetic boehmite alumina (BA). The dis- persion of BA in the matrix was studied by transmission and scanning electron microscopies. Agglomerated micronscale along with well dispersed nanoscale BA particles were present in the EPBC matrix. By contrast to the neat EPBC, all nanocomposites failed by unstable necking. Therefore the energy partitioning concept of the EWF was adapted and attention paid to the yielding-related term. Both specific yielding-related essential and nonessential work of fracture parameters increased linearly with the product of the yield stress and elongation at yield derived from static tensile tests. V C 2014 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2014, 131, 40447. |
| Databáze: | OpenAIRE |
| Externí odkaz: |
|
Plný text