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1971•Journal of Polymer Science Part A-1 Polymer ChemistryRequires access

Al(Cap)3 as initiator in the anionic polymerization of ε‐caprolactam at high temperature

Tuyoshi Konomi, Hisaya Tani

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Abstract

Abstract Mechanism for polymerization of ε‐caprolactam in the presence of both sodium and aluminum caprolactamate was investigated at 171°C. The role of Al(Cap)3 as an initiator was revealed. The apparent rate constant of propagation reaction decreased with the increase in the concentration of Al(Cap)3, as the two different metal salts interact even at 171°C. The activation energy of the overall polymerization reaction with this catalyst system was estimated to be 41.18 kcal/mole.

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Abstract Mechanism for polymerization of ε‐caprolactam in the presence of both sodium and aluminum caprolactamate was investigated at 171°C. The role of Al(Cap)3 as an initiator was revealed. The apparent rate constant of propagation reaction decreased with the increase in the concentration of Al(Cap)3, as the two different metal salts interact even at 171°C. The activation energy of the overall polymerization reaction with this catalyst system was estimated to be 41.18 kcal/mole.

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Available abstract

Abstract Mechanism for polymerization of ε‐caprolactam in the presence of both sodium and aluminum caprolactamate was investigated at 171°C. The role of Al(Cap)3 as an initiator was revealed. The apparent rate constant of propagation reaction decreased with the increase in the concentration of Al(Cap)3, as the two different metal salts interact even at 171°C. The activation energy of the overall polymerization reaction with this catalyst system was estimated to be 41.18 kcal/mole.

Key concepts: Caprolactam, Polymerization, Activation energy, Chemistry, Catalysis, Polymer chemistry, Anionic addition polymerization, Physical chemistry

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