'10 ways to control rheology by changing particle properties' is the latest
addition to Malvern
Instruments' INFORM series of white papers, which are designed to provide
advice on material characterization issues. Freely downloadable from the Malvern
website, this new document guides the reader through some of the fundamental
properties of dispersed systems and demonstrates how these affect its rheology.
A variety of examples illustrates the effects on rheology of changing particle
size, size distribution, shape and zeta potential, alone and in combination.
Many materials used today are disperse systems where one substance, often a
particulate, is dispersed in another phase. Examples are common in areas as
diverse as adhesives, agrochemicals, cement, ceramics, colloids, cosmetics and
personal care formulations, food and drink, mining and mineral slurries, paints,
inks and surface coatings, pharmaceuticals and polymer systems. The physical
properties of the dispersed particles – average particle size, size distribution,
zeta potential or charge on the particles, and particle shape – all influence
bulk material properties such as rheology. Therefore the rheology of a dispersed
system can be controlled through the measurement and manipulation of key parameters.
To download a copy of '10 ways to control rheology by changing particle
properties' visit http://www.malvern.com/control_rheology
Malvern, and Malvern Instruments are registered trademarks of Malvern Instruments
Malvern Instruments provides a range of complementary materials characterization
tools that deliver inter-related measurements reflecting the complexities of
particulates and disperse systems, nanomaterials and macromolecules. Analytical
instruments from Malvern are used in the characterization of a wide variety
of materials, from industrial bulk powders to nanomaterials and delicate macromolecules.
A broad portfolio of innovative technologies is combined with intelligent, user-friendly
software. These systems deliver industrially relevant data enabling our customers
to make the connection between micro (such as particle size) and macro (bulk)
material properties (rheology) and chemical composition (chemical imaging).
Particle size, particle shape, zeta potential, molecular weight, chemical composition
and rheological properties measurements are now joined by advanced chromatography
solutions (GPC/SEC), extending Malvern's technologies for protein molecular
weight, size and aggregation measurements, and synthetic polymer molecular weight
and distribution. The company's laboratory, at-line, on-line and in-line
solutions are proven in sectors as diverse as cement production and pharmaceutical