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Factors Influencing Release of Fenac from Polyethylene Matrices

Published online by Cambridge University Press:  12 June 2017

Frank W. Harris ,
Steven O. Norris  and
Larry K. Post
Frank W. Harris
Affiliation:
Dep. of Chem., Wright State University, Dayton, Ohio 45431
Steven O. Norris
Affiliation:
Dep. of Chem., Wright State University, Dayton, Ohio 45431
Larry K. Post
Affiliation:
Dep. of Chem., Wright State University, Dayton, Ohio 45431
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Abstract

Fenac [(2,3,6-trichlorophenyl)acetic acid] and its sodium salt were incorporated in polyethylene matrices under varied conditions to afford a series of herbicide-polyethylene formulations. Diffusion within the matrix determined the rates at which the herbicides were released from the formulations into water. Release rates of the herbicides were altered significantly if (a) the formulation curing conditions were varied, (b) the initial amount of herbicide in the matrix was varied, (c) the solubility of the herbicide was changed, or (d) if an additive was used. The results indicate that herbicide diffuses from the matrix through water-filled cracks and capillary channels.

Type
Research Article
Information
Weed Science , Volume 21 , Issue 4 , July 1973 , pp. 318 - 321
Copyright
Copyright © 1973 Weed Science Society of America 

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References

Literature Cited

1. Barrer, R. M. 1941. Diffusion in and through solids. MacMillan Company, New York. 216 p.Google Scholar
2. Higuchi, T. 1963. Mechanisms of sustained-action medication. J. Pharm. Sci. 52:1145–1149.Google Scholar
3. Liebhafsky, H. A., Marshal, A. L., and Verhoek, F. W. 1942. Loss of plasticizers from polyvinyl chloride plastics in vacuum. Ind. Eng. Chem. 34:704–708.Google Scholar
4. Quackenbos, H. M. 1954. Plasticizers in vinyl chloride resins. Ind. Eng. Chem. 46:1335–1349.Google Scholar
5. Small, P. A. 1947. Diffusion of plasticizers from polyvinyl chloride. J. Soc. Chem. Ind. 66:17–19.Google Scholar
6. Steward, K. E. and Nelson, L. L. 1972. Evaluations of controlled release PVC and attaclay formulations of 2,4-D on Eurasian watermilfoil. Hyacinth Contr. J. 10:35–38.Google Scholar