ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 20, Number 2
JKCSEZ 20(2)
April 20, 1976 

The anionic polymerization of ε-caprolactam with N,N'-adipyl-bis-ε-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℃, 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-ε-caprolactam as an initiator, it was observed that the reactivity of N,N'-adipyl-bis-ε-caprolactam was greater than both of the N-benzoyl-ε-caprolactam and N-acetyl-ε-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.