Anionic polymerization of ϵ-caprolactam—LXI. transacylation of imides and salts derived from various lactams and N-alkyl amides

Interaction of potassium 3,3-dimethyl-2-piperidone with l-benzoyl-3,3-dimethyl-2piperidone in DMSO as a model of the complex propagation centre in the anionic polymerization of lactams has been studied by 'H and j3C NMR, infrared spectroscopy, and, for the Li counterion, by MNDO calculations. The reactants were found to form a loose complex which can emerge in various geometries sharing the equivalence and relative motional freedom of both lactam moieties. 5 p e s of internal motions in the complex are suggested and their implications for the detailed idea of the propagation mechanism are discussed.

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Study of the propagation centre in the anionic polymerization of lactams, 2. Model study of the interaction between an activated monomer and N‐acyllactam in dimethyl sulfoxide

Křı́ž

Stehlı́ček

Dybal

et al. 1996

Macro Chemistry & Physics

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The role of N‐acyllactam in polymerizations of lactams

Puffr

Stehlı́ček

Šebenda

1992

Makromolekulare Chemie. Macromolecular Symposia

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In anionic, cationic and non‐catalyzed polymerizations of lactams, highlyreactive N‐acyllactams are formed in slow initiation steps. These imides enter then the propagation and termination reactions. All types of lactam polymerizations can be accelerated by an intentional addition of N‐acyllactams or other acylating agents, including the polymerizations where N‐acyllactams are not spontaneously formed. The rate data of the initiation, propagation, transacylation and side reactions and of N‐acyllactam hydrolyses, alcoholyses, acidolyses and aminolyses are surveyed.

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Synthesis and properties of copolymers consisting of aramide and poly(6-hexanelactam) blocks

Marek

Stehlı́ček

Doskočilová

1995

European Polymer Journal

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Anionic polymerization of ϵ-caprolactam—LXI. transacylation of imides and salts derived from various lactams and N-alkyl amides

Cited by 3 publications

References 7 publications

Study of the propagation centre in the anionic polymerization of lactams, 2. Model study of the interaction between an activated monomer and N‐acyllactam in dimethyl sulfoxide

Study of the propagation centre in the anionic polymerization of lactams, 2. Model study of the interaction between an activated monomer and N‐acyllactam in dimethyl sulfoxide

The role of N‐acyllactam in polymerizations of lactams

Synthesis and properties of copolymers consisting of aramide and poly(6-hexanelactam) blocks

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