CONSTANTS AND PARAMETERS OF RADICAL COPOLYMERIZATION OF POLY(ETHYLENE GLYCOL FUMARATE) WITH ACRYLIC ACID

Abstract

In the present work, the binary radical copolymerization of poly(ethylene glycol fumarate) with acrylic acid in a dioxane medium was investigated for the first time at various mole ratios of the initial monomer mixture. The kinetics of the copolymerization reaction was studied. Kinetic curves show that with increasing mole fraction of acrylic acid in solution, the reaction rate and sorption capacity of copolymers also increase. The synthesized copolymers composition was determined by chromatography-mass spectroscopy. The constants and parameters of radical copolymerization were calculated using the integral methods of Mayo-Lewis, Fineman-Ross and Kelen-Tüdos. The Q-e parameters were calculated by the Alfray-Price equation on the basis of copolymerization constants. A lower reactivity characterization of poly(ethylene glycol fumarate) were found at copolymerization of it with acrylic acid. Direct proportionality of the unsaturation degree of copolymers to the content of poly(ethylene glycol fumarate) in the composition of the initial monomer mixture was shown.

References

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