Abstract
AbstractThe bulk copolymerization of methyl methacrylate (MMA) with dodecyl methacrylate (DMA) initiated by 2,2′‐azoisobutyronitrile (AIBN) at 60°C was used to prepare samples with different MMA/DMA ratios. The composition of the copolymers was determined by means of FTIR spectroscopy, using the absorption intensity ratio of CH2/CO for copolymers in CDCl3 solution and as KBr tablets. Reactivity ratios, determined by the Kelen‐Tüdős method, were found to be: rMMA = 1.58 and rDMA = 1.88 for copolymers analyzed in solution, and rMMA = 1.67 and rDMA = 1.95 for samples prepared as KBr tablets. Comparison of copolymer composition of some samples was made with elemental analysis data. It was found that the shift in the CO maximum observed for the copolymer in CDCI3 solution, compared to the corresponding homopolymer solutions, could also be used for determining copolymer composition.
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