Conversion dependence of the branching density for the polycondensation of AB(n) monomers

被引：60

作者：

Beginn, U ^{[1
]}

Drohmann, C ^{[1
]}

Moller, M ^{[1
]}

机构：

[1] UNIV ULM, ABT ORGAN CHEM 3, D-89069 ULM, GERMANY

来源：

MACROMOLECULES | 1997年 / 30卷 / 14期

关键词：

D O I：

10.1021/ma961734s

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

The distribution function of differently branched molecules resulting from the ideal statistic condensation of AB(2) functional monomers is calculated as a function of the conversion of the A. groups. For these distribution functions the averaged branching parameters DBF = (number of terminal groups + number of dendritic groups)/degree of polymerization and DBHF = number of dendritic groups/maximum number of dendritic groups are calculated. In the more general case of AB(n) polycondensates, equations are given to calculate the weight fraction of branched units directly from the degree of A-group conversion. Additionally, expressions for the polycondensations kinetics are derived, yielding the conversion and the degree of polymerization as a function of time.

引用

页码：4112 / 4116

页数：5

共 26 条

[1]

BARTSCH HJ, 1983, TASCHENBUCH MATH FOR

[2] ANGULAR-DISTRIBUTION OF RAYLEIGH-SCATTERING FROM BRANCHED POLYCONDENSATES - AMYLOPECTIN AND GLYCOGEN TYPES [J].