Rheometry – Rotational
Rotational rheometry is a powerful technique for the measurement of complex shear rheology across all material types – sensitive enough to measure the viscosity of dilute polymer solutions, and yet robust enough to measure the viscoelasticity of high modulus polymers or composites. Rotational rheometry is ideal for discerning structural and compositional changes of materials, which can be critical controlling factors in flow and deformation properties, and ultimately product stability and performance.
This week is the Annual European Rheology Conference (AERC) held in beautiful Copenhagen. It has been a great conference so far with the opening reception at the City Hall – what an impressive building.
Malvern had a talk on Tuesday with our very own Nordic Rheology Specialist, Mats Larsson, talking about how “Creep testing can be used as an alternative to multi wave oscillation for determining the true gel point of network polymers“.
The session was appropriately chaired by Professor Henning Winter who along with Francois Chambon set out the criterion for …
Binding affinity and Kd, Differential Scanning Calorimetry, Dynamic Light Scattering, Français, Gel permeation chromatography, Image Analysis, Isothermal Titration Calorimetry, Laser Diffraction, Meet the Experts, Molecular size, Nanoparticle Tracking Analysis, Particle concentration, Particle size, Rheological and Viscosity, Rheometry - Rotational, Size Exclusion Chromatography, Static Light Scattering, Zeta potential »
Afin de vous apporter un support concret pour utiliser votre système de façon optimale, finaliser vos bonnes pratiques de laboratoire et répondre à vos besoins spécifiques, Malvern organise des formations sur site ou en sessions dans nos 3 agences françaises (Orsay, Lyon et Toulouse).
Voici les dates de toutes les sessions programmées pour 2017 :
CARACTERISATION DES PARTICULES PAR DIFFRACTION LASER
Objectifs : Perfectionner les méthodes de caractérisation des particules en voie sèche et liquide, définir les bonnes pratiques de laboratoire et s’adapter aux besoins spécifiques de chaque installation. Comprendre le principe physique …
Over the last few years, the nail polish industry has really opened up its beauty box of tricks, and on the market today, to name but a few, we see nail polishes with “magnetic, gel, matte, glitter, crackle, stamping, quick-dry, caviar, sponge, color changing, leather and sandy” effects. There are also nail polishes with kale, silk and nylon extracts! It really has turned into an art form. However, in order for us to appreciate the wonders of these magical nail polishes, there must be some exciting science behind it all?
Isothermal Titration Calorimetry, Meet the Experts, Nanoparticle Tracking Analysis, Rheometry - Rotational, Size Exclusion Chromatography »
How time flies! Spring is here already! Just for you I have collated the latest list of our On Demand webinars. Just click and choose your favorite subject.
I also listed all our upcoming webinars for April. You can register for free and if you can’t attend, we’ll send you the recording few days after the live event so don’t hesitate, click now!
March On Demand webinars:
How Size Exclusion Chromatography can improve processes and quality in biopharmaceutical development
Applications of light scattering in pharmaceutical development
Interpretación de resultados de tamaño de partícula por la técnica de difracción …
Archimedes - Particle Metrology System, Insitec, Kinexus, Meet the Experts, Molecular structure, Molecular weight, Particle size, Rheometry - Rotational »
Last week my kids got very frustrated with warm French toast and a new brand of chocolate spread. The French toast, was …of course…warm, and the chocolate was misbehaving: melting and dripping on their fingers …
Now, French toast (and chocolate spread) is a staple at our house but somehow this never happened before. Mom learned the lesson fast: for this new chocolate spread let the French toast cool first! But the little neurons started firing (wonder… I know, but it happens sometimes)…
Little questions and answers in my head: why now? – …
Inside Malvern, Kinexus, Laser Diffraction, Mastersizer, Particle size, Rheological and Viscosity, Rheometry - Rotational »
My name is Thea Miksch and I recently visited Malvern Instruments for a six day work experience placement. It was quite a big thing for me since I came from Germany to the UK for this placement. I was a little scared that I wouldn’t understand anything about the technology, but the Malvern employees were great at explaining it so even I got it!
One of the many things I learned is that there is science behind everything. I never thought of the particle size of chocolate or the viscosity of …
Kinexus, Laser Diffraction, Mastersizer, Particle size, Rheological and Viscosity, Rheometry - Rotational »
Nutri Ninja Pro Vs the Nutribullet
Smoothie Wars! Which blends the best?
Here at Malvern Instruments, we seem to enjoy testing the rheological properties of drinks, particularly those of the alcoholic variety! Just before Christmas John Duffy and Steve Carrington looked into the differences between traditional ales and more recently they explored the properties of Guinness. Any excuse to go down the pub…!
Therefore, it was probably about time to explore the healthier option on the drinks menu, and an ideal hangover cure – smoothies. Additionally this was a perfect opportunity to demonstrate …
Microfluidic Rheometer and Guinness
The Great Guinness Viscosity Challenge
Last year we did a nice Christmas blog on the viscosity of beer where myself and Steve Carrington took our Microfluidic rheometer down to our local pub to measure a selection of their traditional ales and correlate the results with drinking experience of course. Since then I have been asked a number of times what is the viscosity of the ‘good old black stuff’ otherwise known as Guinness. I am not sure whether my colleagues think I have an extremely sensitive and well …
Kinexus, Laser Diffraction, Malvern Events, Mastersizer, Meet the Experts, Particle size, Rheological and Viscosity, Rheometry - Rotational »
Coffee and Cocoa Particle Size
Chocolate and coffee, what a great combination! But which do you prefer – milk chocolate and a regular cup of coffee or perhaps an espresso with a square of dark chocolate? Milk chocolate and dark chocolate have different compositions and would be expected to taste differently but why does an espresso taste different from a regular cup of coffee if they are made from the same beans? Are there any similarities between coffee flavor and chocolate flavor?
The taste of the coffee we drink depends very much on …
“Ice cream anyone?” The utterance of such words is usually sufficient to get people’s attention and put a smile on their faces, especially on a hot summer day. So what is so special about ice cream and what makes one better than another? As the name suggests ice-cream is essentially “frozen cream” and can be traced back to 200 BC when the Chinese froze a mixture of milk and rice by packing it into the snow. The explorer, Marco Polo apparently saw ice-creams being made during a trip to China …Read the full story »
Corporate, Rheometry - Rotational »
Malvern has added a new model to the Kinexus+ series, completing our trio of rotational rheometers. So why did we add an extra model? When the next generation series launched in October 2013, it featured two models, the high-end flagship ultra+ and the research-grade pro+. In the short time the systems have been available, the response from the scientific community has been exceptional. Researchers quickly began to see the benefits of the rSpace SOP (Standard Operating Procedure) software approach for more than just research and development, and asked for a …Read the full story »
A rotational rheometer is required to enable a complete understanding of material flow and deformation behaviour for complex viscoelastic materials – from low viscosity polymer and surfactant solutions, through to suspensions and emulsions and high particle-loaded semi-solids such as pastes, and high viscosity polymer melts.
Such material types are commonly encountered across a wide variety of industries from personal care and cosmetics, paints and coatings, foods and polymer products, and it is often the material’s elasticity component that will strongly influence their processing and application behaviour.
Knowing a rheometer can help you …