The leading blog on nanocellulose

How to improve your organic solvent system with a bio-based alternative

By Mats Hjørnevik 12. June 2018

Bio-based is on everyone's lips these days, and there are a high number of initiatives going on in innovating new product systems with a bio-based background. In this post I will give you a sneak peak into the improvement of an organic solvent system, using a biobased addtive as an example. Cellulose fibrils is a green and environmentally friendly material that consists of a complex three dimensional network of cellulose microfibrils.

It is well known that cellulose fibrils , because of its high surface area and many available hydroxyl (OH) groups, has a high affinity for water. This result in a material with very high water holding capacity that forms strong gels in water at low concentrations. Since cellulose fibrils is so fond of water, it might be easy to think that the material would not perform well if it was dispersed in other solvent systems. However, this is far from the truth!

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Temaer: MFC

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: Flow, rheology

Research review May 2018: new topics from the world of cellulose fibrils

By Mats Hjørnevik 29. May 2018

Ever heard about bouligand structures or tunicates? And how are these topics relating to nanocellulose? This week’s research review is giving you a summary of some really exciting news relating to strength performance from nanocellulose (nanocrystalline cellulose). In addition, we are bringing you news on nanocellulose as an art-preservation aid. Spend 4 minutes and read through some really interesting updates.

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Temaer: MFC reviews, Cellulose Fibrils

Trouble with cracking during drying of your coating, adhesive, putty or other products?

By Mats Hjørnevik 22. May 2018

One of my favorite characteristics of the cellulose fibrils is its behavior when drying or involved in the drying process of a product system. I have learned through some of our conducted tests that cellulose fibrils can act in an interesting and often beneficial way towards obtaining desired end product characteristics. Most of the examples on how the fibrils influence the drying are related to coatings. I however believe that similar behavior is possible to observe in application areas where a tight control of dry-out properties is desired. Evaporation of solvents is often the main technique for drying in many applications. I will therefore focus my blog post this time on this specific drying technique. Let me share some very interesting insights into why cellulose fibrils are improving the products upon drying.

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Temaer: Strength, Film, coating

How to improve art conservation by utilizing the technology advantage

By Mats Hjørnevik 15. May 2018

OK, so this case fascinated me a great deal. I have previously learned a lot on film forming properties, oxygen barrier properties and other related topics to this in the past. But recently I learned that the properties from microfibrillated cellulose and cellulose fibrils is starting to show potential in art preservation or conservation. But how does this take place, and what’s the main functionalities behind all this? I spent some time researching the subject, and today I am sharing my findings with you. Some key words: stability, transparency and mechanical strength. Dig in to learn more!

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Temaer: Film

CELLULOSE FIBRILS FOR PRINTED ELECTRONICS

By Anni Karppinen 8. May 2018

Printed electronics suit well for the current mega trends, like internet of things and growing interest in monitoring your own health. The products produced by printed electronics vary from displays and sensors to energy storage and flexible conductors. For example, small sensors can be printed on food packaging to follow the quality of food as well as warn the consumer when the product is out of date. For such reasons, the interest for developing materials for printed electronics is growing. How can cellulose fibrils and other cellulose based materials be used in such applications?

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Temaer: Inkjet

Nanopaper preparation with KTH

By Anastasia Riazanova 1. May 2018

Making nanopaper is an good test on the characteristics of cellulose fibrils, and especially strength and durability. In this weeks blog from the Exilva blog, our H2020 partners at KTH are showing you how to make the nanopaper in a "step-by-step" practical example. The making of nanopaper quickly illustrates the strength performance you can get from this material once it forms paper or film. Spend a couple of minutes, and you will quickly understand why this material can take a leading part in the dual focus of increased sustainability and performance. 

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Temaer: paper, Sustainability, Strength, Film

Stability of Cellulose fibrils — microbial degradation

By Rebecca Blell 24. April 2018

Cellulose fibrils are most often supplied as readily activated water suspensions. This maintains the product’s performance and makes it easy to incorporate into a formulation. It however brings up questions about the microbial stability of the suspension over time. Is the robustness of Cellulose fibrils enough in this case?

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Temaer: storage, Stability, Biodegradability, Cellulose Fibrils

Why should I use cellulose fibrils in coatings?

By Mats Hjørnevik 17. April 2018

It is important for producers of coatings to control flow and stability. The way to do this in water borne systems has typically been a work for synthetically derived additives, water-soluble cellulose derivatives or clays. Can cellulose fibrils do anything new for you?

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Temaer: MFC, coating, Cellulose Fibrils

Microfibrillated cellulose, cellulose fibrils or nanocellulose?

By Anni Karppinen 10. April 2018

Is microfibrillated cellulose (MFC) the same as nanocellulose? What is the difference between micro- and nanofibrillated cellulose? What about cellulose nanocrystals and cellulose fibrils? Starting to read about MFC (or nanocellulose) might be confusing since the terms used for nano- and micro-sized cellulosic materials are versatile. Moreover, they are not totally established, so the same material can have different names or the same terms can be used for very different kind of materials. In this post, I will introduce the most common terms and distinguish synonyms from different materials.

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Temaer: MFC, Cellulose Fibrils

A blog from Borregaard

Exilva is Borregaard’s innovative new additive within the field of Cellulose fibrils / Microfibrillated cellulose (MFC). Exilva is a completely natural and infinitely sustainable performance enhancer that improves rheology and stability in product formulations.


Visit www.exilva.com

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