Related Experiment Video
Updated: Feb 4, 2026

The Barnacle Balanus improvisus as a Marine Model - Culturing and Gene Expression
Published on: August 8, 2018
Fouling-Release Properties of Dendritic Polyglycerols against Marine Diatoms
Robin Wanka1, John A Finlay2, Kim A Nolte1
1Analytical Chemistry - Biointerfaces , Ruhr-University Bochum , 44780 Bochum , Germany.
Abstract:
Dendritic polyglycerols (PGs) were grafted onto surfaces using a ring-opening polymerization reaction, and the fouling-release properties against marine organisms were determined. The coatings were characterized by spectroscopic ellipsometry, contact angle goniometry, ATR-FTIR, and stability tests in different aqueous media. A high resistance toward the attachment of different proteins was found. The PG coatings with three different thicknesses were tested in a laboratory assay against the diatom Navicula incerta and in a field assay using a rotating disk. Under static conditions, the PG coatings did not inhibit the initial attachment of diatoms, but up to 94% of attached diatoms could be removed from the coatings after exposure to a shear stress of 19 Pa. Fouling release was found to be enhanced if the coatings were sufficiently thick. The excellent fouling-release properties were supported in dynamic field-immersion experiments in which the samples were continually exposed to a shear stress of 0.18 Pa.
Related Concept Videos
Energy-releasing Steps of Glycolysis
The first energy-releasing step—the 6th step of glycolysis...
Physical and Chemical Properties of Matter
Properties of Transition Metals
Physical Properties Affecting Solubility
As for any solution, the solubility of a gas in a liquid is affected by the attractive intermolecular forces between solute and solvent species. Unlike solid and liquid solutes, however, there is no solute-solute intermolecular attraction to overcome when a gaseous solute dissolves in a liquid solvent since the atoms or molecules comprising a gas are far separated and experience negligible interactions. Consequently, solute-solvent interactions are the sole...
General Properties of Solutions
Convolution Properties I
The commutative property reveals that the input and the impulse response of an LTI (Linear Time-Invariant) system can be interchanged without affecting the output:

