NANOPARTICLES & NANOFLUIDS
TEC Star is able to provide to all its customers a complete service of characterization of the main properties of nanoparticles and nanofluids (suspensions of organic or inorganic nanoparticles in liquid medium), for a quality control analysis for produced or supplied material (recommended especially for raw materials coming from the Far East).
This activity is mainly addressed to those companies that use or produce nanomaterials, nanocomposites and suspensions, but also to those companies interested in verifying the presence of nanoparticles within consumer products.
SIZE, COMPOSITION, CRYSTALLOGRAPHY
The knowledge of the morphology (shape and size) and chemical composition (surface and bulk) of nanomaterials, are a major issue to understand and define their behavior.
TEC Star is able to provide a full service of characterization of nanomaterials (nanoparticles, nanotubes, and nanoclay), both from a morphological (shape, size distribution, particles average diameter), chemical (surface composition with analysis of functionalizing elements, average bulk composition, presence of contaminants) and crystallographic (crystal phase analysis) point of view.
As an example of the information that TEC Star can provide with its instruments, below is reported a brief brochure reporting descriptions and case histories:
Characterization of nanomaterials >>> download in pdf the case history
HYDRODYNAMIC DIAMETER, ZETA POTENTIAL
Stability is one of the most important properties of a solid-liquid suspension; there are several ways to influence this characteristic, but the easiest is to change the electrostatic charge of particles (by adjusting the pH), influencing in this way the Zeta potential.
The instrumentation available for the customers of TEC Star is able to determine the Zeta potential and the hydrodynamic diameter of sub-micrometric particles dispersions (considering also any surface chemical modifications of the specific particles), exploiting the interaction of the liquid suspension with a laser beam (Dynamic Light Scattering – DLS).
Different features of this tool (in compliance with ISO standards) allow, for example: to validate the effectiveness of stabilizing agents (polymers, surfactants, etc..); to characterize innovative suspensions developed by internal R&D or external suppliers; to understand the reasons of unstable suspensions under variable conditions of storage (precipitation, flocculation, aggregation, etc.).
To properly characterize the suspensions analyzed (viscosity and refractive index are key parameters to accurately run a DLS analysis), a rotational viscometer and an Abbe refractometer are available.
These instruments allow to perform precise analyzes of specific products (lubricants, detergents, etc..).
As an example of what can be achieved using these tools, below is reported a brief brochure with descriptions and case histories: