Poly[N‐(2‐hydroxypropyl)methacrylamide]. IV. Heterogeneous polymerization

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<jats:title>Abstract</jats:title><jats:p>Kinetics of radical heterogeneous polymerization of N‐(2‐hydroxypropyl)methacrylamide was studied in acetone at 55°C. The values of reaction order with respect to the monomer (1.6) and to the initiator (0.5) indicate a bimolecular termination and degradative transfer during the chain growth. The over‐all rate constant of polymerization was found to be 5.6.10‐4. Addition of a small amount of a solvent (methanol) to the polymerization mixture led to an increased polymerization rate and increased molecular weight of the resulting polymer, but a higher amount of the solvent brought about a decrease of both characteristics. The Occurence of maxima on the dependences of R<jats:sub>p</jats:sub>, as well as M̄<jats:sub>w</jats:sub> on the monomer concentration was interpreted in terms of the classical Bamford and Jenkins theory.</jats:p>

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