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공중합에서 확산이 율속하는 반응속도식의 모델링 II.공중합체의 조성과 평균분자량 예측

Modeling of Diffusion-Controlled Kinetics in Copolymerization-II. Prediction of Copolymer Composition and Average Molecular Weights

유기윤 황우현 백종은 이현구

Yoo KY Hwang WH Back JE Rhee HK

HWAHAK KONGHAK, December 1995, 33(6), 693-699(7), NONE

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Abstract

본 연구의 제 I부에서 여러 가지 초기 St(styrene)의 농도와 개시제 농도에 대하여 전환율 실험결과를 잘 모사할 수 있는 모델을 제안하였다. 이 모델을 이용하여 다양한 중합 조건에서 공중합체의 몰조성과 평균분자량을 예측하였다. 확장한 PDRCM(pseudo-kinetic rate constant method)으로 공중합 속도식을 단중합 속도식으로 단순화하여 예측한 공중합체의 몰조성과 평균분자량은 실험결과와 잘 부합하는 경향을 보여 주었다.

In Part I of this series, a mathematical model was proposed which could describe the experimental data very well under various copolymerization conditions covering wide ranges of initial mole fraction of styrene, f10, at two different levels AIBN(2.2’-azobisisobutyronitrile) initiator concentration. In this part both the copolymer composition and the number and the weight average molecular weights of the copolymer are predicted by using the model under the various operating conditions. The presented extension of the PKRCM(pseudo-Kinetic rate constant method)is proven very useful in obtaining a reliable prediction of the copolymer composition and molecular weight averages.

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References

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