Role of cyclization in the degree-of-polymerization distribution of hyperbranched polymers -: Modelling and experiments

被引：115

作者：

Dusek, K ^{[1
]}

Somvársky, J

Smrcková, M

Simonsick, WJ

Wilczek, L

机构：

[1] Acad Sci Czech Republ, Inst Macromol Chem, CR-16206 Prague 6, Czech Republic

[2] Dupont Co, Marshall Lab, Philadelphia, PA 19146 USA

[3] Dupont Co, Cent Res & Dev Dept, Expt Stn, Wilmington, DE 19880 USA

来源：

POLYMER BULLETIN | 1999年 / 42卷 / 04期

关键词：

D O I：

10.1007/s002890050493

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

A kinetic model of formation of hyperbranched polymers by step polyaddition of a BA(f) monomer including cyclization was developed. Reactions between acyclic-acyclic and acyclic-cyclic molecules and cyclization within acyclic molecules were considered. For cyclization within isomers of an x-mer, a bridging function between linear and spherical structures was used. Fractions of cyclic x-mers are predicted to increase with increasing degree of polymerization a: and overall conversion of B groups. High fractions of cyclics were found in poly[2,2-bis(hydroxymethyl)propanoic acid] (poly(dimethylolpropionic acid)) by mass spectroscopy (ESI/FT MS) in a reasonable agreement with the model.

引用

页码：489 / 496

页数：8

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