Abstract
AbstractIntrinsic viscosities of solutions of a number of alkyl polymethacrylates in various alkyl esters of methacrylic acid were investigated. Generally speaking, a decrease in the intrinsic viscosity of a given polymer in methacrylic ester took place when the length of the alkyl chain of ester group of the solvent methacrylic ester was increased. This behavior was observed with solutions of methyl polymethacrylate, ethyl polymethacrylate, copolymer of methyl methacrylate und ethyl methacrylate, and copolymer of methyl methacrylate and butyl methacrylate. However, the various alkyl esters of methacrylic acid were found to be almost equally good solvents for butyl polymethacrylate and hexyl polymethacrylate. Peak temperatures and times of polymerization of redox activated slurries obtained from different polymers and alkyl esters of methacrylic acid were studied. The results stressed the fact that compatibility of polymer and monomer in that slurry, indicated by high value of intrinsic viscosity for the polymer in the same monomer, is essential for its successful polymerization in a reasonable time.
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