Abstract
A predictive model developed for the release rates of volatile materials from glass capillaries was invalid when tested with Celcon fibers used commercially in pheromone-based insect control strategies. Several factors which might explain the differences between the predicted and observed rates are discussed, and it is hypothesized that the topography of the fiber lumen is the major factor causing the observed rates to deviate from the predicted values and the large variation in rate from fiber to fiber. This hypothesis was tested using Teflon capillary fibers with both smooth and rough lumen walls and shown to be valid. This indicates that commercial hollow-fiber pheromone formulations can be improved both in efficiency and cost by careful selection of fiber material, improvement in fiber manufacturing, and the use of a predictive model in formulation design.
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Brooks, T.W., 1980. Controlled vapor release from hollow fibers: Theory and applications with insect pheromones, p. 165–193,in, A. Kydonieus (ed.). Controlled Release Technologies: Methods, Theory and Application, Vol. 2. CRC Press, Boca Raton, Florida.
Weatherston, I., Miller, D., andDohse, L. 1984. Capillaries as controlled release devices for insect pheromones and other volatile substances-A reevaluation. Part 1. Kinetics and development of predictive model for glass capillaries.J. Chem. Ecol., 11:953–965.
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Contribution No. 391 Department of Biology, Laval University.
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Weatherston, I., Miller, D. & Lavoie-Dornik, J. Capillaries as controlled release devices for insect pheromones and other volatile substances—A reevaluation. J Chem Ecol 11, 967–978 (1985). https://doi.org/10.1007/BF01020667
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DOI: https://doi.org/10.1007/BF01020667