Molecular weight effects on chain pull-out fracture of reinforced polymeric interfaces

Details Molecular weight effects on chain pull-out fracture of reinforced polymeric interfaces Molecular weight effects on chain pull-out fracture of reinforced polymeric interfaces

1999-04-26

arxiv.org/abs/cond-mat/9904373v1

Physics

Condensed Matter

Materials Science

5 pages, 3 figures

Scientific paper

10.1103/PhysRevE.60.4460

Using Brownian dynamics, we simulate the fracture of polymer interfaces reinforced by diblock connector chains. We find that for short chains the interface fracture toughness depends linearly on the degree of polymerization $N$ of the connector chains, while for longer chains the dependence becomes $N^{3/2}$. Based on the geometry of initial chain configuration, we propose a scaling argument that accounts for both short and long chain limits and crossover between them.

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