The leading blog on nanocellulose

[VIDEO] Topic Tuesday: Lime mortar can better compete with concrete, with new rheology additives available

By Mats Hjørnevik 20. November 2018

Lime, consisting of air lime and hydraulic lime, is one of the most important historical construction materials. Due to new plasticizer technologies available, we are now seeing a new golden era approaching for this material? Don't miss out on this Topic Tuesday subject that can give you insights into improving lime mortar formulations which can outcompete concrete materials by enhancing workability and appearance.

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Temaer: viscosity, Topic Tuesday, rheology

Important rheological properties of cellulose fibrils / nanocellulose

By Mats Hjørnevik 13. November 2018

Rheology is the study of deformation and flow of material under stress, for example how easily material changes its form when it is pressed, or how easy it is to pump liquid in the pipes. Yield stress and viscosity are two importance aspects in the study of rheology and I will today exemplify this by using the cellulose fibrils/nanocellulose technology. 

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Temaer: MFC, rheology

How can i control the rheology of my concrete better?

By Tania Risson 30. October 2018

Concrete products are a complex mixture of chemicals, fines, and heavy particles. It's always challenging to control the stability, flow and strength of it. Many admixtures have been created to overcome these challenges, often containing synthetically derived performance additives. I will here try to give you some input of one of the new technologies and how it affects various parameters in the concrete.

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Temaer: MFC, rheology, concrete

How to use and understand cellulose fibrils? The practical experience from Covestro

By Thomas Marwedel 26. June 2018

Our blog post of the week is today a really exciting one! We have been so fortunate to interview Peter Küker, who is a technical manager at Covestro in Germany. Peter has been working with cellulose fibrils in a project at Covestro for some time, and today he is sharing his views and experience on utilizing the fibrils in some of the Covestro formulations for adhesives. Don't miss out on this opportunity to learn more about the actual experience of utilizing the effect from the fibrils on rheology, dispersion and material handling.

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Temaer: New materials, waterborne, Dispersion, Sustainability, rheology

Looking for a rheology additive for a waterborne system? here are some hints on what to look for (and how to find a bio-based one)

By Mats Hjørnevik 5. June 2018

This week I would like to discuss water-based systems where the challenge is to apply the product effectively on a surface. This can be true for a high number of products ranging from coatings, adhesives, composites (for instance plastics), materials for 3D printing, deicing products and so on. The downstream processing and application of the product is by medium or high shear equipment, meaning either a roller, brush, a spray or the like. This calls for a shear thinning rheology system to stabilize the formulation and give the correct viscosity at each step.

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Temaer: rheology, Flow

The past, present and future of performance coatings: can waterborne systems improve it?

By Mats Hjørnevik 27. March 2018

The performance coatings sector has seen decades of development to protect installations and transportation equipment. The sector has been highly dominated by solvent based systems and these systems have seen incremental innovations for a long period of time. The end-user demands for these systems have been set in a context of a world in an ever-changing environment: high pressure on efficiency, increased globalization and international trade, as well as the period of increased climate focus. So how is this world going to look in the near future? In my attempt to share thoughts on this subject, I will focus on the rheology system, how its currently being solved and how it can be solved with alternative, more environmentally friendly technologies in the future.

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Temaer: New materials, Environment, waterborne, coating, rheology

Topic Tuesday: High temperature stability with cellulose fibrils

By Mats Hjørnevik 30. January 2018

Another episode of Topic Tuesday where we break down the rheological profile of cellulose fibrils under certain conditions. This week we will show you the robustness of your product's rheology profile under different temperatures when using cellulose fibrils.

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Temaer: Topic Tuesday, Video, temperature, rheology, Stability, heat

[VIDEO] Topic Tuesday: Shear thinning properties with cellulose fibrils

By Mats Hjørnevik 19. December 2017

We are back with another Topic Tuesday, and today's easy digestible 4 minutes of fame will introduce you to one of our favorite topics: the rheology behavior of cellulose fibrils. Jump on board, as we dig into the shear thinning properties and show you some real life examples.

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Temaer: Topic Tuesday, Video, rheology

The difference between soluble polymers and cellulose fibrils

By Mats Hjørnevik 24. October 2017

Water soluble polymers have been used for decades, bringing various functionalities to a high number of applications. The reason for their popularity is the ability to being customized by changing molecular weight and molecular chain length, their high efficiency in use (especially the ones with high molecular weight), and their relatively simple handling. However, in certain cases polymeric viscosifiers fail to offer the needed performance and microfibrillated cellulose can offer exactly the desired properties.

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Temaer: Flow, rheology

Developing VOC-free formulation with microfibrillated cellulose

By Anni Karppinen 29. August 2017

Governments around the world are pushing industries to reduce their volatile organic compound (VOC) emissions. VOCs include very different type of chemicals but they may be dangerous to human health and therefore there is a common desire to reduce the use of them. Health effects vary from eye, nose and throat irritation to causing cancer.

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Temaer: rheology, coating