SIZE AND MASS OF BRANCHED EPOXY-RESINS

被引：5

作者：

GROF, K ^{[1
]}

MRKVICKOVA, L ^{[1
]}

KONAK, C ^{[1
]}

DUSEK, K ^{[1
]}

机构：

[1] CZECHOSLOVAK ACAD SCI, INST MACROMOLEC CHEM, HEYROVSKY SQ 2, CS-16206 PRAGUE 6, CZECHOSLOVAKIA

来源：

POLYMER | 1993年 / 34卷 / 13期

关键词：

BRANCHED EPOXY AMINE POLYMERS; STATIC AND DYNAMIC LIGHT SCATTERING; GELATION PROCESSES; CRITICAL PHENOMENA;

D O I：

10.1016/0032-3861(93)90126-U

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Branched polymers were prepared from the bifunctional 4,4'-diglycidyloxy-2,2-diphenylpropane (diglycidyl ether of bisphenol A) and hexafunctional poly(oxypropylene) diamine (Jeffamine T-403) at different distances from the gel point in the absence and presence of a diluent. Polymers with different amounts of intramolecular cycles were prepared by dilution during polymerization of the epoxide system with diglyme/butanol mixed solvent. The static and dynamic light scattering from dilute solutions of these epoxide samples was measured. The results are discussed in terms of existing gelation theories. The critical exponents of M(w) lie between the values predicted by the Flory-Stockmayer and percolation theories and are shifted towards the percolation value with increasing fraction of intramolecular cycles. Polymer growth near the gelation threshold is discussed.

引用

页码：2816 / 2820

页数：5

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