For quality control or formulation of colloidal material such as e.g. dyes or paints a measurement procedure is required that can make precise and reliable statements about the stability of dispersions within a short time. This guarantees industrial processes leading to effectively and inexpensively optimized products.
A well-known measure of the stability behavior of dispersions and nanoparticles are particle interface potentials, such as the zeta potential. By measuring the flow potential generated by the charge separation of the fluid, one obtains information about the zeta potential. The determination of the particle size is another way to investigate a process in order to obtain reliable statements about the stability behavior. The particle size distribution is determined by means of DLS 180 ° dynamic light scattering.
The StabiSizer® by Colloid Metrix provides very fast, accurate and reproducible particle charge and particle size distribution measurements. It is able to measure the surface charge of particles in the range of 0.3 nm to 300 μm and the size distribution of 0.3 nm to 10 μm, at a concentration range of up to 40% vol. Due to the optimized measuring technology, the StabiSizer® can determine 7 parameters simultaneously and within a few seconds:
- particle size distribution
- zeta potential
- streaming potential
- pH value
The StabiSizer® has two built-in titration pumps whose titration speed can be set as required with the software. The determination of the isoelectric point is one of the possibilities of titration and is determined within a few minutes.
Your titration applications with simultaneous particle size monitoring:
pH titration: Determination of the isoelectric point and stable pH ranges.
Polyelectrolyte titration: Statements about the stability and charge density.
Titration with dispersant: For dispersant optimization.
Titration with salts: Zeta potential as a function of the conductivity.
Formulation: Titration with additives to obtain the optimum in the formulation of your products.
In-situ size distribution:
You are not only interested in the surface charge of your sample but also want to determine the particle size distribution?
With the StabiSizer® the size distribution can either be determined stand-alone or can be tracked e.g. during a charge titration. The coagulation becomes "visible" in situ by the particle size and it is possible to identify the critical agglomeration point of a sample. This is especially helpful to assess colloidal systems even more.
7 measurement parameters simultaneously:
To determine the quality of your samples, you need more than just one measurement parameter?
With each measuring point, the StabiSizer® provides information about the particle size distribution, conductivity, zeta potential, streaming potential, temperature, pH and concentration of your sample.
Measuring during the titration:
With the StabiSizer® software, your entire titration or measurement can be tracked in real time, because for each titrated droplet you will receive a measuring point in the graph including all measurement parameters.
To focus only on the results, the software has been made as easy-to-use as possible. Just pour in 1 - 10 mL sample into the Teflon beaker of the StabiSizer®, open the software and start the measurement.
Fast measuring time:
Most known analytical systems are based on electrophoresis zeta potential, with which titrations are often too inaccurate and too time consuming. For a high sample throughput and thus valuable time savings the StabiSizer® was optimized so that the parameters required for e.g. quality assurance or formulation can be determined within seconds. For a polyelectrolyte or pH titration the StabiSizer® takes approx. 5 - 15 minutes and generates several hundreds of data points.
Adapted titration speed:
The titration speed of the StabiSizer® can be adjusted to the reaction rate of your sample. For this the software offers the possibility to define standard operating procedures (SOPs) as desired.
"Mix and Measure" - a huge advantage:
Due to the continuous and rapid mixing of the sample and the titration solution, a charge titration is completed in minutes and additionally prevents sedimentation.
Zeta potential and charge titration to assess the stability of suspensions
Carbon compounds – a question of the surface and how to determine it
Quantitative determination of the acid groups of cellulose and nanocellulose with polyelectrolyte titrations
Stability Analysis of green Tea with the Stabino®
The European Centre for Dispersion Technology (EZD) uses the Combination of Stabino® & NANO-flex® (DUO-S) for the Characterization of various Dispersions
Stabino® Zeta Potential – Titrations now from 0°C to 90°C - and condensation-free.
Comparing three zeta potential analyzers for pulp characterization - Stabino® comes out first for titration and size range
Controlling critical coagulation of pigments and fillers
Charge titration – a fast alternative to the forciertest
Flocculant optimized by charge titration with Stabino®
Zeta potential distribution of 1 nm particles
Ionic Charge Mapping of Macromolecular Solutions and Dispersions
Easy understanding of particle charge and efficient use of it
Particle Charge Titrations on cationic SiO2- and Al2O3- Suspensions
Isoelectric point determination of powder suspensions
Influencing algae reproduction conditions by ionic additives
Solubility of Proteins by Ionic Charge Monitoring
Controlling the Efficiency of the Functionalization of Carbon Nanotubes by Ionic Charge Titration
Zeta potential and size measurement of nanoparticles by laser scattering video microscopy
Comprehensive Ionic Charge Sensing for Macromolecules and Particles
Shahram Nekouei, Farzin Nekouei, Hanieh Kargarzadeh. Synthesis of ZnO photocatalyst modified with activated carbon for a perfect degradation of ciprofloxacin and its secondary pollutants. Chem. 2018;32:e4198. doi.org/10.1002/aoc.4198Abstract
Maren Möller, Nikolay Tarabanko, Claas Wessel, Rüdiger Ellinghaus, Herbert Over* and Bernd M. Smarsly. Electrospinning of CeO2 nanoparticle dispersions into mesoporous fibers: on the interplay of stability and activity in the HCl oxidation reaction. DOI: 10.1039/C7RA03020G (Paper) RSC Adv., 2018, 8, 132-144 Fulltext
Peter Kosiol, Marie Theres Müller, Benjamin Schneider, Björn Hansmann, Volkmar Thom, Mathias Ulbricht. Determination of pore size gradients of virus filtration membranes using gold nanoparticles and their relation to fouling with protein containing feed streams. Journal of Membrane Science, Volume 548, 15 February 2018, Pages 598-608 Abstract
Mohammad Reza Karimi Pur, Morteza Hosseini, Farnoush Faridbod, Mohammad Reza Ganjali, Saman Hosseinkhani Early detection of cell apoptosis by a cytochrome C label-Free electrochemiluminescence aptasensor, Sensors and Actuators B: Chemical, Volume 257, March 2018, Pages 87-95 Abstract
Somayeh Khezri, Morteza Bahram and Naser Samadi A dual-mode nanosensor based on the inner filter effect of gold nanoparticles on the fluorescence of CdS quantum dots for sensitive detection of arginine, Analytical Methods, 2017, Advance Article Abstract
H Bensalah, MF Bekheet, SA Younssi, M Ouammou et al. Removal of cationic and anionic textile dyes with Moroccan natural phosphate, Journal of Environmental Chemical Engineering, Volume 5, Issue 3, June 2017, Pages 2189-2199 Abstract
M Nouri, H Ezzatpanah The Quality of The UHT Skim Milk as Affected by Addition of Rennet Skim Milk, Nutrition and Food Sciences Research, 2017 Fulltext
C Bojer, J Schöbel, T Martin, T Lunkenbein et al. Mesostructured ZnO/Au nanoparticle composites with enhanced photocatalytic activity, Polymer, Volume 128, 16 October 2017, Pages 65-70 Abstract
J Meyer, M Ulbricht Poly(ethylene oxide)-block-poly(methyl methacrylate) diblock copolymers as functional additive for poly(vinylidene fluoride) ultrafiltration membranes with tailored separation performance, Journal of Membrane Science, Volume 545, 1 January 2018, Pages 301-311 Abstract
ASM Wittmar, Q Fu, M Ulbricht Photocatalytic and magnetic porous cellulose-based nanocomposite films prepared by a green method, ACS Sustainable Chem. Eng., 2017, 5 (11), pp 9858–9868, DOI: 10.1021/acssuschemeng.7b01830, Publication Date (Web): September 10, 2017 Abstract
Isabella Tavernaro, Christian Cavelius, Henrike Peuschel and Annette Kraegeloh Bright fluorescent silica-nanoparticle probes for high-resolution STED and confocal microscopy. Beilstein J. Nanotechnol. 2017, 8, 1283–1296. doi:10.3762/bjnano.8.130, Received 19 Dec 2016, Accepted 16 May 2017, Published 21 Jun 2017Fulltext
Taher Alizadeh, Mohammad Reza Ganjali, Faride Rafiei, Maedeh Akhoundian Synthesis of nano-sized timolol-imprinted polymer via ultrasonication assisted suspension polymerization in silicon oil and its use for the fabrication of timolol voltammetric sensor. Msc(2017), doi: 10.1016/j.msec.2017.03.168Fulltext
NEALE, Peta A., et al. Behaviour of titanium dioxide and zinc oxide nanoparticles in the presence of wastewater-derived organic matter and implications for algal toxicity. Environmental Science: Nano, 2015.Abstract
GAJDA, Aleksandra M.; ULBRICHT, Mathias. Magnetic Fe3O4 nanoparticle heaters in smart porous membrane valves. Journal of Materials Chemistry B, 2014, 2. Jg., Nr. 10, S. 1317-1326.Abstract
GOGOI, Madhulekha; DEB, Pritam. Magneto-fluorescent hybrid of dye and SPION with ordered and radially distributed porous structures. Applied Surface Science, 2014, 298. Jg., S. 130-136.Abstract
BORDBAR, A. K., et al. Characterization of modified magnetite nanoparticles for albumin immobilization. Biotechnology research international, 2014, 2014. Jg.PubMed
GRADE, Sebastian, et al. Alloying colloidal silver nanoparticles with gold disproportionally controls antibacterial and toxic effects. Gold Bulletin, 2014, 47. Jg., Nr. 1-2, S. 83-93.Fulltext
ZIADEH, Mazen, et al. Towards completely miscible PMMA nanocomposites reinforced by shear-stiff, nano-mica. Journal of colloid and interface science, 2014, 425. Jg., S. 143-151Abstract
VAKILI TAHAMI, S. H.; RANJBAR, Z.; BASTANI, S. Aggregation and Charging Behavior of Polydisperse and Monodisperse Colloidal Epoxy-Amine Adducts. Soft Materials, 2013, 11. Jg., Nr. 3, S. 334-345.Abstract
BIVER, M.; SHOTYK, W. Stibiconite (Sb3 O6OH), senarmontite (Sb2O3) and valentinite (Sb2O3): dissolution rates at pH 2-11 and isoelectric points. Geochimica et Cosmochimica Acta, 2013.Abstract
WITTMAR, Alexandra, et al. Influence of the cation alkyl chain length of imidazolium-based room temperature ionic liquids on the dispersibility of TiO2 nanopowders. Journal of Nanoparticle Research, 2013, 15. Jg., Nr. 3, S. 1-12.Abstract
FROST, Sven; ULBRICHT, Mathias. Thermoresponsive ultrafiltration membranes for the switchable permeation and fractionation of nanoparticles. Journal of Membrane Science, 2013.Abstract
BAUMGARTEN, W.; DÖRNER, J.; HORN, R. Microstructural development in volcanic ash soils from South Chile. Soil and Tillage Research, 2013, 129. Jg., S. 48-60.Abstract
KAZEMZADEH, H.; ATAIE, A.; RASHCHI, F. In Situ Synthesis of Silica-Coated Magnetite Nanoparticles by Reverse Coprecipitation Method. Journal of superconductivity and novel magnetism, 2012, 25. Jg., Nr. 8, S. 2803-2808.Abstract
NENNEMANN, Arno, et al. Production of films having flexible barrier coatings containing phyllosilicates. WIPO Patent Application PCT/EP2012/061520, 2012.Fulltext
MARKGRAF, W.; MORENO, F.; HORN, Rainer. Quantification of microstructural changes in Salorthidic Fluvaquents using rheological and particle charge techniques. Vadose Zone Journal, 2012, 11. Jg., Nr. 1, S. 0-0. Abstract
PAZOKIFARD, Sh, et al. Silane grafting of TiO2 nanoparticles: dispersibility and photoactivity in aqueous solutions. Surface and Interface Analysis, 2012, 44. Jg., Nr. 1, S. 41-47.Abstract
NOURI, Marjan, et al. Effect of Partially Hydrolyzed Kappa-Casein on Physicochemical and Sensory Properties of Heated Milk. Journal of Dispersion Science and Technology, 2012, 33. Jg., Nr. 8, S. 1204-1209.Abstract
KHOSHNEVISAN, Kamyar, et al. Immobilization of cellulase enzyme on superparamagnetic nanoparticles and determination of its activity and stability. Chemical Engineering Journal, 2011, 171. Jg., Nr. 2, S. 669-673.Abstract
LAMBERTY, Andrée, et al. Interlaboratory comparison for the measurement of particle size and zeta potential of silica nanoparticles in an aqueous suspension. Journal of Nanoparticle Research, 2011, 13. Jg., Nr. 12, S. 7317-7329.Abstract
NORUZI, Masumeh, et al. Rapid green synthesis of gold nanoparticles using Rosa hybrida petal extract at room temperature. Spectrochimica Acta Part A: Molecular and Biomolecular Spectroscopy, 2011, 79. Jg., Nr. 5, S. 1461-1465PubMed
MARKGRAF, Wibke; MORENO, Felix; HORN, Rainer. Physikochemische und rheologische Parameter eines natürlichen und eines meliorierten Fluvaquents in SW-Spanien (Sevilla). 2011.Fulltext
KHAN, Tabrisur Rahman, et al. Electrodeposition of zinc–silica composite coatings: challenges in incorporating functionalized silica particles into a zinc matrix. Science and Technology of Advanced Materials, 2011, 12. Jg., Nr. 5, S. 055005.Fulltext
IDEMOTO, Yasushi, et al. METHOD FOR PRODUCING DIELECTRIC FILM AND METHOD FOR PRODUCING CAPACITOR LAYER-FORMING MATERIAL USING THE METHOD FOR PRODUCING DIELECTRIC FILM. U.S. Patent Application 12/933,924, 2009.Fulltext
MEZGER, Jochen, et al. Method For Producing Metal Nanoparticles In Polyols. U.S. Patent Application 13/003,785, 2009.Fulltext