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Thicknesses (ellipsometry (wet films), hop, and X-ray reflectivity (dry films), hX-ray) and swelling ratio, S, for (PDADMAC + PSS)N multilayers (N = 12) formed from solutions with two different ionic strengths.
| cNaCl [M] | wet films hop [nm] | dry films hX-ray [nm] | S |
| 0.10 | 84 ± 5 | 59 ± 3 | 0.30 ± 0.05 |
| 0.50 | 316 ± 5 | 95 ± 13 | 0.67 ± 0.03 |
