Abstract
Sequential semi-interpenetrating polymer networks based on polyurethanes with different crosslink densities and linear polystyrene, poly(butyl methacrylate), and poly(methacrylic acid) have been studied. For the parent polyurethanes, the molecular mass of chain segments between crosslink junctions is estimated by the Flory-Rehner method. The kinetics of formation of linear polymers in semi-interpenetrating polymer networks is investigated as a function of the crosslink density of the polyurethane network. The molecular-mass distributions of linear polymers developed in semi-interpenetrating polymer networks are examined by size-exclusion chromatography. The relationship between the kinetics of formation of linear components under the conditions of confined space and their molecular mass is established.
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