MOLECULAR-MASS DISTRIBUTION OF POLYMER-CHAINS IN LINEAR CONDENSATION POLYMERIZATION WITH ARBITRARY KINETIC CONSTANTS

被引:0
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作者
IRZHAK, TF [1 ]
PEREGUDOV, NI [1 ]
TAI, ML [1 ]
IRZHAK, VI [1 ]
机构
[1] NI LOBACHEVSKII STATE UNIV,APPL MATH & CYBERNET RES INST,NIZHNII NOVGOROD 603005,RUSSIA
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中图分类号
O63 [高分子化学(高聚物)];
学科分类号
070305 ; 080501 ; 081704 ;
摘要
Specific features of molecular mass distribution were analyzed by solving numerically a system of differential equations which described the kinetics of linear condensation polymerization with the effect of substitution in the first sphere in terms of bond blocks. It was found that, at a certain ratio between kinetic constants, the MMD was described by an ''oscillating'' pattern, for which the concentrations of chains composed of even and odd number of units (with identical or different end groups in the case of copolymers) were significantly different. The region where such behavior was observed was identified.
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页码:653 / 657
页数:5
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