Anionic Polymerization of 2-Pyrrolidone and -Caprolactam via CO2-KOH Catalysis ()

[摘要] Anionic polymerization of 2-pyrrolidone and ¥å-Caprolactam via CO2/KOH catalysis was attempted in order to find reaction condition and physical properties of polymers. In case of polymerization of 2-pyrrolidone, the yield of conversion was increased when the concentration of potassium hydroxide was reached above 8 mole percent. The optimum of CO2/KOH mole ratio was 0.45. It was also found that the polymerization was taking place at moderate temperature which was around 50¡É. With regard to polymerization of-caprolactam, the yield of conversion was relatively low at 80¡É to 95¡É and higher yield of conversion was obtained at higher temperature between 150¡É to 180¡É regardless of CO2/KOH mole ratio. The inherent viscosity of nylon 4 and nylon 6 which was made via CO2/KOH catalysis was measured. The observed inherent viscosity was between 2.0 to 5.0.

[学科分类] 化学（综合）