Monte Carlo simulation of the direct exchange reaction in a polymer blend

被引：0
|
作者：
Kononenko, O.A. [1 ]
Kudryavtsev, Ya.V. [1 ]
Litmanovich, A.D. [1 ]
机构：
[1] Inst. of Petrochemical Synthesis, RAS, Leninskij prosp. 29, Moscow, 119991, Russia
来源：
Vysokomolekularnye Soedineniya. Ser.A Ser.B Ser.C - Kratkie Soobshcheniya | 2002年 / 44卷 / 08期
关键词：
Computer simulation - Copolymers - Mathematical models - Molecular weight distribution - Monte Carlo methods;
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学科分类号：
摘要：
The reaction of direct interchain exchange in a homogeneous blend of linear polymers was modeled numerically using the Monte Carlo method. The evolution of the molecular-mass and block-mass distributions was studied for the two types of initial conditions: a blend of two polymers with the Flory distribution and a blend of monodisperse polymers. In the course of the reaction, the molecular-mass distribution relaxes to the total Flory distribution, whereas the evolution of the block-mass distribution to the Bernoulli distribution is considerably slower. The evolution of the block-mass distribution was studied for the first time. At early stages of the reaction, the copolymer (product) composition can differ substantially from the composition of the blend as a whole. The transient molecular-mass distributions obtained by the Monte Carlo method agree well with the results of theoretical calculations.
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页码：1412 / 1421
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