Young's modulus of polyelectrolyte multilayers from microcapsule swelling

Details Young's modulus of polyelectrolyte multilayers from microcapsule swelling Young's modulus of polyelectrolyte multilayers from microcapsule swelling

2003-07-24

arxiv.org/abs/cond-mat/0307622v1

Macromolecules, 37, 1113, 2004

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1021/ma0350213

We measure Young's modulus of a free polyelectrolyte multilayer film by studying osmotically induced swelling of polyelectrolyte multilayer microcapsules filled with the polyelectrolyte solution. Different filling techniques and core templates were used for the capsule preparation. Varying the concentration of the polyelectrolyte inside the capsule, its radius and the shell thickness yielded an estimate of an upper limit for Young's modulus of the order of 100 MPa. This corresponds to an elastomer and reflects strong interactions between polyanions and polycations in the multilayer.

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