Staff Publications

Staff Publications

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    'Staff publications' is the digital repository of Wageningen University & Research

    'Staff publications' contains references to publications authored by Wageningen University staff from 1976 onward.

    Publications authored by the staff of the Research Institutes are available from 1995 onwards.

    Full text documents are added when available. The database is updated daily and currently holds about 240,000 items, of which 72,000 in open access.

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Record number 551611
Title Slippery paints: Eco-friendly coatings that cause ants to slip
Author(s) Féat, Aurélie; Federle, Walter; Kamperman, Marleen; Murray, Martin; Gucht, Jasper van der; Taylor, Philip
Source Progress in Organic Coatings 135 (2019). - ISSN 0300-9440 - p. 331 - 344.
DOI https://doi.org/10.1016/j.porgcoat.2019.06.004
Department(s) Physical Chemistry and Soft Matter
VLAG
Publication type Refereed Article in a scientific journal
Publication year 2019
Keyword(s) Ants - Attachment - Paints - Particle detachment - Slipperiness
Abstract

Many insects are considered to be pests and can be serious threats to buildings. Insecticides represent an effective way to control pest insects but are harmful to the environment. As an eco-friendlier alternative, we have formulated waterborne, organic paints which provided a slippery physical barrier for leafcutter ants (Atta cephalotes) on vertical surfaces. Different paints were produced by varying the Pigment Volume Concentration (PVC) and amount of TiO2 and CaCO3 particles, and characterised in terms of contact angles, surface roughness and scrub resistance. The paints’ slipperiness for A. cephalotes ants was evaluated in climbing tests on vertical paint panels (by recording the percentage of fallen ants). Two main factors reduced the insects’ attachment to vertical paint surfaces: (1) the PVC: in paints above a critical PVC, more loose particles detach from the coating and thereby reduce insect attachment; and (2) the type, dimensions and shape of solid particles: CaCO3 particles detach more easily from the paint than TiO2, probably due to their larger size and platelet shape. Paints formulated at PVC 70 and containing 20 wt% CaCO3 showed the best performance in terms of slipperiness, as well as providing good scrub resistance.

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