SELF-ACCELERATING REACTIONS

See other induction period incidents, self-accelerating reactions Acid anhydrides... 

See entry SELF-ACCELERATING REACTIONS See Other INDUCTION PERIOD INCIDENTS... 

Townsend, D. I., "Hazard Evaluation of Self-Accelerating Reactions," Chem. Eng. Prog., 73,80 (1977). 

More evidence has been accumulated [see e. g. ref. (55)] to show that the polymerisation yielding high molecular weight polypeptides proceeds in two steps — initial self-accelerated reaction followed by an apparently first order reaction. It seems that the growing species slowly reach their stationary concentration and in this period the reaction appears to be auto-catalytic. In the terms of Bamford s mechanism this behaviour is easily explained by postulating slow initiation and rapid propagation. The initiation results from an attack of an activated monomer on a non-aetivated NCA. The propagation results from a... 

See other INDUCTION PERIOD INCIDENTS, SELF-ACCELERATING REACTIONS Acid anhydrides... 

Townsend, D.I. (1977) Hazard evaluation of self-accelerating reactions. Chemical Engineering Progress, 73,... 

Brogli, F., Grimm, P., Meyer, M. and Zubler, H. (1980) Hazards of self-accelerating reactions, in 3rd International Symposium Loss Prevention and Safety Promotion in the Process Industries, Swiss Society of Chemical Industry, Basel, 665-83. 

In fact, in most mechanisms, the reaction rate is proportional to the concentration of a reaction product. Thus, the term of self-accelerating reaction would be more appropriate. But for sake of simplicity, we maintain the term autocatalytic. Our use of the word autocatalysis does not imply any molecular mechanism. 

Monomers polymerizations show a strong self-accelerating reaction rate [13, 14]. 

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