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Essential Work of Fracture and Failure Mechanisms of Polypropylene–clay Nanocomposites by Martin N. Bureau; Minh-Tan Ton-That; Florence Perrin-Sarazin is a Engineering article available to read on EtoBox.

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The fracture behavior of polymer nanocomposites (PNCs) based on a polypropylene with organo-modified clays (2 wt.%) and different coupling agents was studied by means of essential work of fracture (EWF). The PNC microstructure was characterized by clay particle dispersion at the micron scale (>1 lm) and sub-micron scale (200 nm to 1 lm), with good intercalation and partial exfoliation (<100 nm). Tensile testing showed significant improvements (+25-50%) corresponding to nanoparticle reinforcement effects. Fracture surfaces revealed that fracture occurred by void initiation at larger clay particles, followed by void growth and coalescence as the surrounding matrix stretched into ligaments. EWF improvements (+20%) were noted for PNCs that had fewer micron scale particles and showed higher tensile improvements. Toughness improvements were attributed to higher voiding stresses and improved matrix resistance attributed to finer, more oriented clay nanoparticles.

Who reads Essential Work of Fracture and Failure Mechanisms of Polypropylene–clay Nanocomposites?

Author

Martin N. Bureau; Minh-Tan Ton-That; Florence Perrin-Sarazin

Publisher

Elsevier Science; Elsevier ; Elsevier BV (ISSN 0013-7944)

Published

2006

Language

EN

Field

Engineering (Physical Sciences)