The Anionic Polymerization of -Caprolactam using Potassium-hydroxide as a Catalyst and N,N'-Adipyl-bis--caprolactam as Initiator

[摘要] The anionic polymerization of ¥å-caprolactam with N,N'-adipyl-bis-¥å-caprolactam as an initiator and potassium hydroxide as a catalyst was studied under various conditions.It was found that concentration of catalyst and initiator was 4.2 and 1.6 mole %, and polymerization temperature of 130¡É, polymerization time of 1.5 hours was the optimum condition. The intrinsic viscosity and molecular weight of the obtained polymer was over 0.9 dl/g and 12,000. The polymerization was carried out in the presence of N-acyl-¥å-caprolactam as an initiator, it was observed that the reactivity of N,N'-adipyl-bis-¥å-caprolactam was greater than both of the N-benzoyl-¥å-caprolactam and N-acetyl-¥å-caprolactam. In general it was also observed that the intrinsic viscosity and yield of conversion was increased as an increasing of concentration of catalyst and initiator and also highly depend on temperature.

[学科分类] 化学（综合）