The leading blog on nanocellulose

Anni Karppinen

Anni has worked with MFC since 2008, first at the Aalto University and the last two years at Borregaard as a research scientist. In her current work, she concentrates on the analysis of MFC and different technical applications. Her main interest lies in the flow properties and rheology of MFC. Anni has a doctoral degree in Polymer Technology.

Recent Posts

How to characterize microfibrillated cellulose reliably?

By Anni Karppinen 25. October 2016

Developing a new kind of material is fascinating work and requires many innovations before the product is available for the market. One important part of the development work is to find analysis methods t for characterizing the quality. Those methods should ideally describe the material well but also be reproducible and reliable. Often this is ensured by using standard methods, but for new materials, like microfibrillated cellulose (MFC), they do not exist yet. Even though some work has been initiated by Canadian Standards Association (Z5100-14 Cellulosic nanomaterials – Test methods for characterization) and TAPPI, there are no proper guidelines for analysis of MFC yet. As a guidance to those unfamiliar with microfibrillated cellulose, I will share my tips for a reliable, reproducible analysis of MFC.

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How to use MFC in cosmetic products? Interview with Cosmacon & Rainer Kröpke

By Anni Karppinen 11. October 2016

Cosmetic products are one of the most exciting application areas for microfibrillated cellulose (MFC). The opportunities within this field are almost endless as Mr. Rainer Kröpke from Cosmacon GmbH has learned when working with MFC in cosmetic applications. Mr. Kröpke has a long experience in formulating cosmetic products first at Beiersdorf (Germany) and since 2012 as a consultant. Read below his interview where he shares his experiences with all our blog readers.

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Applications for strong, light-weight MFC films

By Anni Karppinen 27. September 2016

Have you ever tried to make a film from microfibrillated cellulose (MFC)? If you have, you know that it has a good film-forming ability, and the film is strong and light. In addition, the films are opaque, translucent or even transparent depending on the thickness of the film and type of MFC. They also show good oxygen barrier properties. Moreover, MFC can be combined with different polymers or fillers to obtain even more versatile material. In this week’s post, I want to show the potential of MFC films in various applications. Let’s start by discussing how MFC films can be made and then see what kind of applications these films may have.

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Important rheological properties of microfibrillated cellulose

By Anni Karppinen 9. August 2016

In this blog post, I will try to give you some insights into a topic I find a fascinating one related to microfibrillated cellulose (MFC): Rheology of MFC suspensions. 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.

The rheological properties of MFC are so versatile that you always discover something new when you study it. This time, I will discuss two important rheological properties of MFC: Viscosity, together with shear thinning, and yield stress.

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Microfibrillated cellulose or nanocellulose?

By Anni Karppinen 19. July 2016

Is microfibrillated cellulose (MFC) same as nanocellulose? What is the difference between micro- and nanofibrillated cellulose? What about cellulose nanocrystals and microfibrillated cellulose? Starting to read about MFC (or nanocellulose) might be confusing since the terms used for cellulosic nano- and micro-sized 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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MFC review – news from academia

By Anni Karppinen 5. July 2016

Microfibrillated cellulose (MFC) is subject to high interest from both academia and the industry these days. A lot of exciting research is being conducted at various universities and research centeres around the world. In this blog post I will review articles I found particularly interesting regarding the use of MFC in adhesives and coatings. Note that, for the sake of simplicity, I have used the term “MFC” throughout this text even if the researchers might have used a different name in their articles. 

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What makes Microfibrillated cellulose stable over wide pH range

By Anni Karppinen 28. June 2016

Microfibrillated cellulose (MFC) can be used as a rheology modifier and stabilizer in different kind of systems in consumer and industrial products. Compared to other additives used for these purposes, MFC has a unique advantage: It is stable in a wide range of pH. This means that it can be used in a variety of products - even with extreme pH conditions, like detergents or alkaline adhesives - or add to a manufacturing process that is subjected to changes in pH. But what is it that makes MFC this stable? 

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Why readily activated microfibrillated cellulose makes life easier

By Anni Karppinen 21. June 2016

Microfibrillated cellulose (MFC) has potential as a multifunctional additive in various applications. Its performance  ranges from improving stability and flow properties in coatings and adhesives to giving immediate anti-wrinkle effect in skin creams. We often say that, in addition to these effects, one of the other advantages of using MFC is that it is “readily activated”. But what does that mean?

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3 ways to exploit the large surface area of microfibrillated cellulose

By Anni Karppinen 31. May 2016

One of the benefits of microfibrillated cellulose (MFC) is its very high surface area. It is considerably higher than the surface area of many traditional cellulose materials, like cellulose fibers used in paper making or microcrystalline cellulose. When the fibers are torn down to smaller and smaller fibrils, the surface area consequently increases, which leads to new properties and applications. Let’s have a look at some examples of these applications.

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A blog from Borregaard

Exilva is Borregaard’s innovative new additive within the field of Microfibrillar / 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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