โ Scribed by Rooney, John M.
No coin nor oath required. For personal study only.
Thermal degradation of methyl and ethyl cyanoacrylate polymers of numberโaverage molecular weights 370โ1350 is shown to proceed by depolymerisation at temperatures in the range 140ยฐโ180ยฐC. Under the conditions of the thermogravimetric analysis technique employed, weight loss kinetics appear to be governed by diffusion of monomer vapour through the liquid sample. A mathematical model of this process is postulated.
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Methyl 2-cyanoacrylate-2-l4C, -3-\*4c and -1CN tagged monomers were im planted subcutaneously in mongrel dogs and their urine assayed for radioactivity. The results show that the urea from the -3-14C was radioactive and radioactive acidic components, as well as neutral moieties, were present. Urea r
Methyl a-cyanoacrylate, when implanted subcutaneously in rats and dogs, has been shown to lead to an inrrease in thiocyanate output in the wine, presumably through the formation of cyanide anions which are subsequently converted to thiocyanate. It is postulated that this reaction may be one of the r
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