Copolymers containing vinylpyrrolidone and mono and dialkyl itaconate units with different length in the side chains were synthesized and characterized. Copolymers of vinylpyrrolidone with three different compositions of monomethyl, monoethyl, monopropyl, monoamyl, dimethyl, diethyl, dipropyl, and diamyl itaconate were obtained by radical polymerization. The reactivity ratios was estimated by using the classical Fineman−Ross and Kelen Tudos procedures. These parameters were also estimated using a computer program based on nonlinear minimization algorithm, starting from the values of r1 and r2 obtained by the linear procedures. The copolymers can be considered as random. Fractionation of the copolymers were achieved by fractional precipitation. Fractions were characterized by viscometry and light scattering measurements. The unperturbed dimensions were determined using the Stockmayer−Fixman method. Higher rigidity indexes and characteristic ratios are observed in copolymers containing diitaconate units tha...

Synthesis, Reactivity Ratios, and Solution Behavior of Vinylpyrrolidone-co-Monoalkyl Itaconate and Vinylpyrrolidone-co-Dialkyl Itaconate Copolymers

The unperturbed dimensions and the steric factor σ of poly(mono-n-octyl itaconate) (poly-(1-carboxy-1-octyloxycarbonylmethylethylene)) were determined from the intrinsic viscosities in two solvents, using the semiempirical equation of Stockmayer and Fixman Evidence for the existence of specific effects was found The irregular behaviour observed, can be interpreted in terms of conformational changes and conformational transitions of the polymeric chain, induced both by solvent and temperature The effect of the structure of the monomeric unit on the flexibility of the macromolecule is discussed

Polymer conformation and viscometric behaviour, 3. Synthesis, characterization and conformational studies in poly(mono-n-octyl itaconate)†

Preparation and characterization of (monomethyl itaconate)-(methyl methacrylate) and of (itaconic anhydride)-(methyl methacrylate) copolymers

Solvents and Non Solvents for Polymers

Polymer conformation and viscometric behaviour—5: Synthesis, characterization and conformational studies for poly(monobenzyl itaconate)

Synthesis and solution properties of poly(ditoluyl itaconates)

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Synthesis and solution properties of poly(ditoluyl itaconates)