Electrostatic Stabilization of Alumina Nanopowder Suspensions

被引：9

作者：

Cinar, Simge ^{[1
]}

Akinc, Mufit ^{[1
]}

机构：

[1] Iowa State Univ, Dept Mat Sci & Engn, Ames, IA 50011 USA

来源：

SCIENCE OF ADVANCED MATERIALS | 2014年 / 6卷 / 03期

基金：

美国国家科学基金会;

关键词：

Alumina Nanopowder; Bound Water; Solids Content; Suspensions; NANOPARTICLE SUSPENSIONS; ELECTROLYTE-SOLUTIONS; CONCENTRATED ALUMINA; AGGREGATION KINETICS; OXIDE NANOPARTICLES; SURFACE-PROPERTIES; HAMAKER CONSTANTS; SOLVATION FORCES; AQUEOUS-SOLUTION; GAMMA-ALUMINA;

D O I：

10.1166/sam.2014.1773

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

Electrostatic stabilization has an impact on a broad range of applications. Previous research has shown that concentrated alumina nanopowder suspensions can be stabilized at specific ranges of ionic strength and pH. This study investigated the stability of alumina nanopowder suspensions in terms of viscosity measurements as a function of different electrolyte concentration and suspension pH. Using alumina nanopowders with an average particle size of about 50 nm, stable suspensions were obtained with 0.020 <= [NaCl] <= 0.040 M or in the range 4 <= pH <= 7. The observed suspension stability was investigated by zeta potential measurements and explained with the DLVO theory. The effective volume fraction of solids brought about by bound water (or swelling), surface charge, and the compression of the electrical double layer were three plausible control mechanisms for the rheological behavior and electrostatic stabilization of alumina nanopowder suspensions with high solids content.

引用

页码：520 / 529

页数：10

共 55 条

[1] Hamaker 2: A Toolkit for the Calculation of Particle Interactions and Suspension Stability and its Application to Mullite Synthesis by Colloidal Methods [J].

Aschauer, Ulrich ;

Burgos-Montes, Olga ;

Moreno, Rodrigo ;

Bowen, Paul .

JOURNAL OF DISPERSION SCIENCE AND TECHNOLOGY, 2011, 32 (04) :470-479

[2] Aggregation and surface properties of iron oxide nanoparticles: Influence of pH and natural organic matter [J].

Baalousha, Mohammed ;

Manciulea, Adriana ;

Cumberland, Susan ;

Kendall, Kevin ;

Lead, Jamie R. .

ENVIRONMENTAL TOXICOLOGY AND CHEMISTRY, 2008, 27 (09) :1875-1882

[3] Anomalous aggregation behaviour of aluminium oxyhydroxides [J].

Beattie, JK ;

Cleaver, JK ;

Waite, TD .

COLLOIDS AND SURFACES A-PHYSICOCHEMICAL AND ENGINEERING ASPECTS, 1996, 111 (1-2) :131-138

[4] The relationship between pH and zeta potential of ∼ 30 nm metal oxide nanoparticle suspensions relevant to in vitro toxicological evaluations [J].

Berg, J. Michael ;

Romoser, Amelia ;

Banerjee, Nivedita ;

Zebda, Rema ;

Sayes, Christie M. .

NANOTOXICOLOGY, 2009, 3 (04) :276-283

[5] Hamaker constants of inorganic materials [J].

Bergstrom, L .

ADVANCES IN COLLOID AND INTERFACE SCIENCE, 1997, 70 :125-169

[6] TiO2-based nanoparticles released in water from commercialized sunscreens in a life-cycle perspective: Structures and quantities [J].

Botta, Celine ;

Labille, Jerome ;

Auffan, Melanie ;

Borschneck, Daniel ;

Miche, Helene ;

Cabie, Martiane ;

Masion, Armand ;

Rose, Jerome ;

Bottero, Jean-Yves .

ENVIRONMENTAL POLLUTION, 2011, 159 (06) :1543-1548

[7] Colloidal processing and sintering of nanosized transition aluminas [J].

Bowen, P ;

Carry, C ;

Luxembourg, D ;

Hofmann, H .

POWDER TECHNOLOGY, 2005, 157 (1-3) :100-107

[8] Colloidal processing of nanoceramic powders for porous ceramic film applications [J].

Bowen, P ;

Hofmann, H ;

Staiger, M ;

Steiger, R ;

Brugger, PA ;

Peternell, K .

EURO CERAMICS VII, PT 1-3, 2002, 206-2 :1977-1980

[9] Engineered nanoparticles in wastewater and wastewater sludge - Evidence and impacts [J].

Brar, Satinder K. ;

Verma, Mausam ;

Tyagi, R. D. ;

Surampalli, R. Y. .

WASTE MANAGEMENT, 2010, 30 (03) :504-520

[10] MEASURING ELECTROSTATIC, VANDERWAALS, AND HYDRATION FORCES IN ELECTROLYTE-SOLUTIONS WITH AN ATOMIC FORCE MICROSCOPE [J].

BUTT, HJ .

BIOPHYSICAL JOURNAL, 1991, 60 (06) :1438-1444

← 1 2 3 4 5 6 →