Dispersing phase viscometry and zeta potential in alumina dispersions

被引：10

作者：

de Vasconcelos, CL ^{[1
]}

de Moura, KT ^{[1
]}

Morais, WA ^{[1
]}

Dantas, TNC ^{[1
]}

Pereira, MR ^{[1
]}

Fonseca, JLC ^{[1
]}

机构：

[1] Univ Fed Rio Grande Norte, Dept Quim, BR-59078970 Natal, RN, Brazil

来源：

COLLOID AND POLYMER SCIENCE | 2005年 / 283卷 / 04期

关键词：

polyelectrolyte; viscometry; adsorption; zeta potential; alumina;

D O I：

10.1007/s00396-004-1162-8

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 stabilities of alumina dispersions were studied as a function of poly- and low molecular weight electrolyte concentration, using viscometry of the dispersing phase, and zeta potential measurements. The relation of polyelectrolyte adsorption to polymer concentration (at different low molecular weight electrolyte concentrations) was found to depend upon the dimensions of the polymer (which were a priori known to decrease with increasing poly- and low molecular weight electrolyte concentration). The occurrence of flocculation and bridging in the destabilization mechanism of the alumina dispersions was also characterized.

引用

页码：413 / 420

页数：8

共 50 条

[41] Polymer concentration dependence of the gel point for chemically modified biopolymer networks using small amplitude oscillatory rheometry [J].

Rodd, AB ;

Cooper-White, JJ ;

Dunstan, DE ;

Boger, DV .

POLYMER, 2001, 42 (08) :3923-3928

[42] Viscometric behaviour of polyelectrolytes in the presence of low salt concentration [J].

Roure, I ;

Rinaudo, M ;

Milas, M ;

Frollini, E .

POLYMER, 1998, 39 (22) :5441-5445

[43] Phase separation and morphology in polymer modified colloids [J].

Sakellariou, P .

PROGRESS IN ORGANIC COATINGS, 1997, 32 (1-4) :183-189

[44] Novel powder-processing methods for advanced ceramics [J].

Sigmund, WM ;

Bell, NS ;

Bergström, L .

JOURNAL OF THE AMERICAN CERAMIC SOCIETY, 2000, 83 (07) :1557-1574

[45]

STAIKOS G, 1993, POLYM INT, V34, P385

[46] Synthesis, morphology and application of alkylaryl hyperbranched polyesters [J].

Tang, LM ;

Qu, T ;

Tuo, XL ;

Zhang, XL ;

Liu, DS .

POLYMER JOURNAL, 2002, 34 (03) :112-116

[47]

Tarng MR, 1996, ADV CHEM SER, V248, P449

[48] Monte Carlo simulations of a single polyelectrolyte in solution: Activity coefficients of the simple ions and application to viscosity measurements [J].

Ullner, M ;

Staikos, G ;

Theodorou, DN .

MACROMOLECULES, 1998, 31 (22) :7921-7933

[49] CHARACTERIZATION OF SUBMICRON ALUMINA DISPERSIONS WITH POLY(METHACRYLIC ACID) POLYELECTROLYTE [J].

WEI, WCJ ;

LU, SJ ;

YU, BK .

JOURNAL OF THE EUROPEAN CERAMIC SOCIETY, 1995, 15 (02) :155-164

[50]

YANG M, 1997, ADV CEM BASED MAT, V129, P75

← 1 2 3 4 5 →