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Received: 1999-02-26

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Journal of Zhejiang University SCIENCE A 2000 Vol.1 No.2 P.148-156



Author(s):  YAO Zhen, LI Bo-geng, CAO Kun, HUANG Yuan, PAN Zu-ren

Affiliation(s):  State Key Laboratory of Polymer Reaction Engineering,Yuquan Campus of Zhejiang University, Hangzhou 310027, China

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Key Words:  modeling, diffusion controlled polymerization, bulk viscosity

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YAO Zhen, LI Bo-geng, CAO Kun, HUANG Yuan, PAN Zu-ren. MODELING FOR THE DIFFUSION LIMITATION OF FREE RADICAL POLYMERIZATION[J]. Journal of Zhejiang University Science A, 2000, 1(2): 148-156.

author="YAO Zhen, LI Bo-geng, CAO Kun, HUANG Yuan, PAN Zu-ren",
journal="Journal of Zhejiang University Science A",
publisher="Zhejiang University Press & Springer",

%0 Journal Article
%A YAO Zhen
%A LI Bo-geng
%A CAO Kun
%A PAN Zu-ren
%J Journal of Zhejiang University SCIENCE A
%V 1
%N 2
%P 148-156
%@ 1869-1951
%D 2000
%I Zhejiang University Press & Springer
%DOI 10.1631/jzus.2000.0148

A1 - YAO Zhen
A1 - LI Bo-geng
A1 - CAO Kun
A1 - HUANG Yuan
A1 - PAN Zu-ren
J0 - Journal of Zhejiang University Science A
VL - 1
IS - 2
SP - 148
EP - 156
%@ 1869-1951
Y1 - 2000
PB - Zhejiang University Press & Springer
ER -
DOI - 10.1631/jzus.2000.0148

A new model was developed to describe the diffusion limitation on free radical polyme-rization. In this model the termination rate coefficient (kt) and propagation rate coefficient (kp) were expressed as a function of bulk viscosity (η). This model was used to simulate the batch thermal polymerization of styrene (St) and the continuous thermal bulk copolymerization of St (monomer 1) and maleic anhydride (MAH, monomer 2) in a CSTR with on-line monitor of the rheological behavior. The simulated results on polymerization conversion, copolymer composition, molecular weight and its distributions were compared with the experimental data, and the results calculated by two previous gel-effect models i.e. Martin-Hamielec and Tulig-Tirrell models. It was found that the present model produces better prediction than that of the Tulig-Tirrell model and has the same accuracy as that of the Martin-Hamielec model, but is much simpler.

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