5-8 December 2022
Tagungszentrum an der Sternwarte, Göttingen
Europe/Berlin timezone

Schroeder's paradox in polymeric surfaces

5 Dec 2022, 16:00
Tagungszentrum an der Sternwarte, Göttingen

Tagungszentrum an der Sternwarte, Göttingen


Guido Ritsema van Eck (University of Twente)


In 1903, von Schroeder reported that gelatin swelled more in water or salt solutions than in the corresponding saturated vapors.[1] Since these phases are in equilibrium, it is surprising that they display different partitioning behaviour, and hence this result has become known as Schroeder’s paradox. It has since been found to occur in other cross-linked polymer systems as well, and has received some attention from membrane researchers due to its impact on moisture management in polyelectrolyte membranes. However, its effects on polymeric interfaces, such as gel interfaces or polymer brush coatings, remain relatively unexplored. I present theory and simulations investigating whether Schroeder’s paradox occurs in polymer brushes and what its origins may be.

1: Schroeder, P. Über Erstarrungs- und Quellungserscheinungen von Gelatine. Z. Phys. Chem., Stoechiom. Verwandtschaftsl. 1903, 45U, 75,  DOI: 10.1515/zpch-1903-4503

Primary authors

Guido Ritsema van Eck (University of Twente) Dr Sissi de Beer (University of Twente)

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