SURFACE-PROPERTIES OF POLYMETHYLENEDIAMINE-FIXED STYRENE ACRYLIC-ACID COPOLYMER LATEX

被引：2

作者：

TAMAI, H

KIYOTA, H

SUZAWA, T

机构：

[1] Department of Applied Chemistry, Faculty of Engineering, Hiroshima University, Higashihiroshima-Shi

来源：

JOURNAL OF APPLIED POLYMER SCIENCE | 1992年 / 45卷 / 01期

关键词：

D O I：

10.1002/app.1992.070450110

中图分类号：

O63 [高分子化学（高聚物）];

学科分类号：

070305 ; 080501 ; 081704 ;

摘要：

Surface charge density, zeta-potential, and dispersion stability of polymethylenediamine (PMD)-fixed styrene/acrylic acid copolymer [P(St/AA)] latex were investigated. PMD-fixed P (St/AA) latices are amphoteric and have isoelectric points at pH 4-7. Though the flocculations were observed at neutral pH, the pHs where the flocculation rates were maximum are slightly higher than were the isoelectric points. This result suggests the influence of the expansion of PMD-fixed polymer layer surrounding the particles on the flocculation. The fixation of PMD to the surface of P (St/AA) latex lowers the dispersion stability for high electrolyte concentration.

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页码：85 / 89

页数：5

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