Adsorption of polyampholytes on charged surfaces

Details Adsorption of polyampholytes on charged surfaces Adsorption of polyampholytes on charged surfaces

2002-02-25

arxiv.org/abs/cond-mat/0202429v2

Physics

Condensed Matter

Soft Condensed Matter

11 pages, 17 figures, accepted for publication in EPJE

Scientific paper

10.1140/epje/i2002-10016-2

We have studied the adsorption of neutral polyampholytes on model charged surfaces that have been characterized by contact angle and streaming current measurements. The loop size distributions of adsorbed polymer chains have been obtained using atomic force microscopy (AFM) and compared to recent theoretical predictions. We find a qualitative agreement with theory; the higher the surface charge, the smaller the number of monomers in the adsorbed layer, in agreement with theory. We propose an original scenario for the adsorption of polyampholytes on surfaces covered with both neutral long-chain and charged short-chain thiols.

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