The anionic polymerization of 2-pyrrolidone was carried out by using $CS_2$/KOH as an initiator-catalyst under various conditions.
The effects of KOH concentration, $CS_2$/KOH mole ratio, temperature, and time were examined. The yield of polymerization was determined and the polymerization rate equation was derived and inherent viscosity was obtained by using 96% conc. sulfuric acid as a solvent.
It was observed that the percent conversion increased as increasing $CS_2$/KOH mole ratio, but decreased when $CS_2$/KOH mole ratio was higher than 0.4. The rate of polymerization at 30℃ is similar to that at 50℃, but equilibrium percent conversion is higher at 30℃ than at 50℃. As the concentration of initiator increased, inherent viscosity of the resulting polymer increased.
$CS_2/KOH$ catalysis를 사용하여 여러가지 조건하에서 pyrrolidone을 음이온 중합시켰다.
KOH 농도, $CS_2/KOH$ 몰비, 중합온도 및 시간의 영향을 조사하였다. 중합 수율을 측정하고 중합 속도 식을 유도하여 중합 속도 상수를 구하였다. inherent viscosity는 96% 진한 황산을 용매로 사용하여 측정하였다.
중합 수율은, $CS_2/KOH$ 몰비가 증가함에 따라 증가하다가, $CS_2/KOH$ 몰비가 0.4를 넘으면 오히려 감소한다. 중합 속도 상수는 온도에 따라 큰 차이를 보이지 않았으나 중합 수율은 30℃의 경우가 50℃의 경우보다 높았다. 개시제의 농도가 낮을수록 점도는 증가하는 현상을 나타냈다.
