Ease of removal of barnacles from various polymeric materials.
The forces required to remove living, fully attached barnacles from the surface of a number of polymeric solids were measured. The forces were related to the surface energy components of the materials. The results indicate a positive correlation between polymer surface energy and force required for barnacle removal. The nonpolar component of the surface energy was more closely related to the removal force than the polar component, although the polar component is significant. Adherence to some composite materials was greater than was consistent with the correlation for noncomposites.
David Taylor Naval Ship Research and Development Center, Materials Department, Annapolis, Maryland 21402.
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Becka
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Loeb