Radical Polymerization of Methyl Methacrylate with Phase Transfer Catalyst, Tetrabutylammonium Chloride
Park SW, Moon JB, Ha YS, Lim GT
Tetrabutylammonium Chloride 상이동 촉매에 의한 Methyl Methacrylate의 라디칼 중합
박상욱, 문진복, 하유수, 임균택
Abstract
The phase-transfer polymerization of methyl methacrylate with tetrabutylammonium chloride-Na2S2O4-CCl4 initiator system was investigated in an aqueous-organic two-phase system. The observed rates of polymerization were compared with those obtained from the polymerization mechanism proposed with a cyclic phase-transfer initiation step. The rate of polymerization was found to be proportional to the concentration of Q+ and square root of S2O4 in the aqueous solution and the feed quantity of CCl4 and MMA.
Na2S2O4 수용액과 CCl4-toluene 용액의 2상에서 수용액상에 용해하는 tetrabutylammonium chloride 상이동 촉매를 사용하여 methyl methacrylate의 라디칼 중합속도를 측정하여, 액-액 불균일계 접촉계면을 통한 라디칼 중합반응기구를 해석하였다. MMA의 중합속도는 수용액상에 존재하는 Q+ 이온의 농도와 S2O4-2이온의 농도의 제곱근에 정비례하고 CCl4와 MMA의 농도에 각각 정비례하였다.
References
1. Webewr WP, Gokel GWPhase Transfer Catalysis in Organic Synthesis, Springer-Verlag, New York (1977)
2. Starks CM, Liotta CPhase Transfer Catalysis-Principle and Techniques, Academic Press, New York (1978)