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Journal of the Korean Chemical Society (JKCS)

ISSN 1017-2548(Print)
ISSN 2234-8530(Online)
Volume 27, Number 1
JKCSEZ 27(1)
February 20, 1983 

 
Title
Anionic Polymerization of 2-Pyrrolidone by Toluene Diisocyanate / KOH Catalysis

Toluene Diisocyanate / KOH 촉매작용에 의한 2-Pyrrolidone의 음이온 중합
Author
Bal Jung, Ki Sung Kwon, Sam Kwon Choi, Mun Sam Ryoo

정발, 권기성, 최삼권, 유문삼
Keywords
Abstract
TDI (Toluene Diisocyanate)/KOH 촉매작용에 의한 2-pyrrolidone의 음이온 중합에 있어서 TDI / KOH 몰비율, KOH의 농도, 온도 및 시간이 중합에 미치는 영향을 조사하였다. TDI / KOH 몰비율이 0.25일 때 중합속도가 가장 빠르고 전환율도 높았으며, 또 KOH의 농도가 5몰퍼센트일 때 가장 높은 전환율과 점도가 얻어졌다. 중합온도는 30℃인 경우가 50℃에 비해 전환율이 높았으며 점도도 높았다. 최소자승법으로 계산하여 구한 중합속도상수(kp)의 값은 30℃일 때 57.53 l/mole·min였고, 50℃일 때 52.36 l/mole·min였다.

Anionic polymerization of 2-pyrrolidone was carried out by TDI (Toluene Diisocyanate)/KOH catalysis. The effects of TDI / KOH mole ratio, KOH concentration, temperature and time on polymerization were investigated. It was observed that the highest rate of polymerization and maximum conversion were obtained when TDI / KOH mole ratio was about 0.25. The maximum conversion and the highest viscosity were obtained when the concentration of KOH was 5 mole percent. It was also found that the rate of polymerization and inherent viscosity at 30℃ were higher than those at 50℃. The rate constant (kp) of polymerization was determined by least square method; the values of kp obtained were 57.53 l/mole·min at 30℃ and 52.36 l/mole·min at 50℃, respectively.

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66 - 72
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