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J Agric Food Chem

Title:		Microparticle dispensers for the controlled release of insect pheromones
Author(s):		Stipanovic AJ; Hennessy PJ; Webster FX; Takahashi Y;
Address:		"Department of Chemistry, College of Environmental Science and Forestry (SUNY-ESF), State University of New York, One Forestry Drive, Syracuse, New York 13210, USA. astipano@esf.edu"
Journal Title:		J Agric Food Chem
Year:		2004
Volume:		52
Issue:		8
Page Number:		2301 - 2308
DOI:		10.1021/jf0352576
ISSN/ISBN:		0021-8561 (Print) 0021-8561 (Linking)
Abstract:		"The potential utility of micrometer-sized particles as controlled-release devices for the volatilization of insect pheromones for mating disruption applications is evaluated in this study for two pheromone/model compound systems (codlemone/1-dodecanol and disparlure/1,2-epoxyoctadecane). To expedite the measurement of release rates from these particle devices, two techniques based on thermogravimetric analysis (TGA) have been exploited: isothermal TGA (I-TGA) at elevated temperatures (40-80 degrees C) with N(2) convection and volatilization temperature (VT) by dynamic TGA. A correlation between these two methods has been established. Samples that exhibit a higher VT provide a lower release rate from a particle substrate. Using these techniques, it has been demonstrated that chemical interactions between adsorbed liquids and particle surfaces may play a small role in defining release characteristics under conditions of low surface area, whereas parameters associated with total surface area and micropore structure appear to be much more significant in retarding evaporation for uncoated particles containing an adsorbed liquid. Additional regulation of release rates was achieved by coating the particle systems with water-soluble or water-dispersible polymers. By careful selection of particle porosity and coating composition, it is envisioned that the evaporation rate of pheromones can be tailored to specific insect control applications"
Keywords:		"Alkanes/administration & dosage Animals Dodecanol/administration & dosage/*analogs & derivatives Microspheres Moths Pest Control, Biological/*instrumentation Pheromones/*administration & dosage;"
Notes:		"MedlineStipanovic, Arthur J Hennessy, Patrick J Webster, Francis X Takahashi, Yae eng Research Support, Non-U.S. Gov't Research Support, U.S. Gov't, Non-P.H.S. 2004/04/15 J Agric Food Chem. 2004 Apr 21; 52(8):2301-8. doi: 10.1021/jf0352576"