Styrene emulsion polymerization above the CMC: New evidence on particle nucleation by means of AFFFF

被引：14

作者：

Carro, S ^{[1
]}

Herrera-Ordonez, J ^{[1
]}

机构：

[1] Ctr Invest Quim Aplicada, Saltillo 25253, Coahuila, Mexico

来源：

MACROMOLECULAR RAPID COMMUNICATIONS | 2006年 / 27卷 / 04期

关键词：

AFFFF; dynamic light scattering; emulsion polymerization; particle nucleation; particle size distribution;

D O I：

10.1002/marc.200500707

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 number (N) and size distribution of particles (PSD) of a styrene emulsion polymerization above the CMC were studied by means of asymmetric flow-field flow fractionation (AF(4)). Bimodal PSDs were obtained, suggesting that coagulation of the primary particles is not as extensive as would be expected, according to the coagulative mechanism. AF(4) allowed it to be demonstrated that N is constant during interval II, and that the resolution limit of other particle sizing techniques can lead to erroneous mechanistic inferences, from the evolution of N.

引用

页码：274 / 278

页数：5

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