The Effect of Modifier Concentration on the Stability of Emulsions and Foams Stabilized with Colloidal Silica Particles

被引：4

作者：

Nushtaeva, A. V. ^{[1
]}

Vilkova, N. G. ^{[1
]}

Mishina, S. I. ^{[1
]}

机构：

[1] Penza State Univ Architecture & Construct, Penza 440028, Russia

来源：

COLLOID JOURNAL | 2014年 / 76卷 / 06期

关键词：

HEXYLAMINE-MODIFIED SILICA; SOLID PARTICLES; INTERFACIAL-TENSION; CAPILLARY-PRESSURE; CONTACT-ANGLE; FILMS; NANOPARTICLES;

D O I：

10.1134/S1061933X1406012X

中图分类号：

O64 [物理化学（理论化学）、化学物理学];

学科分类号：

070304 ; 081704 ;

摘要：

The stability of emulsions and foams stabilized with hexylamine-modified silica particles has been studied as depending on the concentration of the surfactant. Silica modification with short-chain hexylamine leads to a marked increase in the contact angle upon selective wetting and inversion of the phases in the emulsions. The contact angles upon wetting silica surface by aqueous phases are no larger than 60 degrees, while the maximum stability of foams corresponds to contact angles of 38 degrees-50 degrees depending on the concentration of the solid particles.

引用

页码：717 / 724

页数：8

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