High abrasion furnace black (HAF) was added to controlled release styrene-butadiene rubber (SBR) formulations, in order to control the release rate of the bioactive material (CuSO4.H2O). The higher the amount of carbon black, the lower is the release rate of the bioactive material. The in vestigated formulations showed copper ions being leached according to the fol lowing order: Formulation No. 1 > 2 >> 3 ≥ 4 > 5 Increasing the amount of carbon black also improves the physicomechanical properties of the vulcanizate.
Helaly, F.M. and M.H. Nosseir.1987. "Controlled Release of CuSO4.H2O for the Control of Schistosomiasis. A Field Study," J. Controlled Release, 4:279-282.
3.
Ghanem, N.A. , E.M. Abdel-Bary, F.M. Helaly and M. Nossir.1984. " Development of Controlled Release Rubber Formulations as Molluscicides," J. Elastomerics (March).
4.
Kanakkanatt, S.V. "Theoretical Aspects of the Diffusion of Molluscicides in Rubber," Rep. No. 10 Proc. Controlled Release Pesticides Symp, University of Akron, Akron, OH, Sept. 16-18, 1974.
5.
Cotton, G.R. , B.B. Boonstra, D. Rivin and F.R. Williams.1969. Kaustsch U. Gummi K., 22:477.
6.
Morton, M.1973. Rubber Technology, 2nd Ed., p. 57.
7.
Taylor, G.L. and J.H. Atkins.1966. J. Phys. Chem., 70:1678.
8.
ASTM Designation, D 412-66T, 1967.
9.
ASTM Designation, D 573-55T, 1958.
10.
Shvarts, A.1957. Kauch Rezina, 7:31.
11.
Marson, F.1964. J. Oil Colour Chemists Assoc., 47:323.
