Abstract
ABSTRACTIn order to extend the validity of existing mechanistic polymerization models, it is necessary to conduct experiments beyond typical temperature ranges. Bulk copolymerizations of butyl acrylate/methyl methacrylate were performed over an expanded temperature range (60 to 140°C) compared to most studies published to date which have focused on a more limited temperature range (60 to 80°C). From the large amount of collected data, reactivity ratios were estimated at five different temperatures. The reactivity ratios were estimated from low conversion copolymer composition data using the error-in-variables model method (EVM). The low conversion data were subsequently coupled with high conversion data and the reactivity ratios were re-estimated using non-linear parameter estimation based on the integrated copolymer composition equation. Using all of the available data, temperature-dependent expressions were developed for the reactivity ratios. The copolymer composition data conformed to the Mayo-Lewis k...
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