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Abstract
Kinetics of the cationic ring opening polymerization of octamethylcyclotetrasiloxane (D4) in bulk initiated by solid superacid was studied. The optimalizing experimental conditions were based on preliminary experiments. Higher temperature was beneficial to equilibrium conversion while stirring intensity beyond a certain level displayed no obvious effect on the rate of the reaction. A kinetic model was elicited and kinetic parameters were obtained through optimization. The calculated activation energies were 32.6 and 34.1 kJ mol–1 for D4 and all other annuluses (Dx), respectively.
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