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The Exilva Blog

The leading blog on nanocellulose

Coatings, adhesives/sealants

A way to reach prolonged stability of starch adhesives

10. March 2020

Starch is a natural polymer found in many processes either as an adhesive or a thickener. Following paper production, corrugated board is the second largest application of non-food starches globally, where it it used as an adhesive between the fluting and liners. The control of the adhesive viscosity during process and storage is critical. However, despite further developments regarding the formulation of starch adhesives, the viscosity is commonly not stable enough over extended periods of time, in particular over weekend storage. In this first of a series of blog posts with the corrugated boards application as the example, I will give an introduction to this problem, and the new technology of Exilva, a microfibrillated cellulose, to solve it.

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10. March 2020

A way to reach prolonged stability of starch adhesives

Starch is a natural polymer found in many processes either as an adhesive or a thickener. Following paper production, corrugated board is the second largest application of non-food starches globally, where it it used as an adhesive between the fluting and liners. The control of the adhesive viscosity during process and storage is critical. However, despite further developments regarding the formulation of starch adhesives, the viscosity is commonly not stable enough over extended periods of time, in particular over weekend storage. In this first of a series of blog posts with the corrugated boards application as the example, I will give an introduction to this problem, and the new technology of Exilva, a microfibrillated cellulose, to solve it.

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25. February 2020

Innovation – developing core business versus risk mitigation

Most innovation is focused on improving core business, both in small increments and large jumps, to keep ahead of competitors. Disruption can make such innovation worthless e.g. in 2004, wet film photographic technology was overwhelmed by digital photography.

In this article we look at how innovation is becoming a vital part of corporate risk management, developing alternative survival strategies as disruptive changes hit organisations.

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11. February 2020

Innovation talk: Is your business a dinosaur or a bird?

Faced with disruptive changes to the economic environment, only those businesses that are flexible and responsive can survive and prosper. Those not responding quickly enough will die off like the dinosaurs, but it’s getting harder to react enough in time – now you need to pre-empt change.

This article continues to illustrate the risks of not being ahead of the game so looks at investing wisely in exploiting advances in materials and technology to survive and prosper, like the birds.

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7. January 2020

Applications for strong, lightweight MFC films

Microfibrillated cellulose (MFC) has a good film-forming ability, where 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 post, we 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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19. November 2019

Exilva Microfibrillated Cellulose & Hydroxyethyl Cellulose: anti-settling & anti-sedimentation because of yield stress

Hydroxyethyl cellulose (HEC) and Exilva microfibrillated cellulose (MFC) can both be used as rheology modifiers in a variety of industries to prevent sedimentation and settling. In this article, I review the ability of the materials to give a yield stress in a waterbased system and, because of that, provide anti-settling and anti-sedimentation behavior. Tune-in on a comparison between these two rheology additives.

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29. October 2019

How yield stress play an important role in anti-settling in your paint

Undesirable phenomena such as sedimentation and settling can often occur during the storage of paints. Therefore, a re-dispersion step is necessary which can mean additional cost. These challenges can be even more pronounced in high solid content formulations and so it is crucial to secure stability of those systems. To avoid these effects, rheology modifiers need to be added to paint formulations. So, I prepared some information for you and conducted a couple of tests with the rheology additive nanocellulose to show you how focus on yield stress will reduce sedimentation and settling.

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1. October 2019

Why Microfibrillated Cellulose can enable you to formulate paints with less expensive microspheres

Paint manufacturers have been formulating paints containing microspheres in many years. Formulators can use microspheres to increase the solid content of a coating while maintaining the proper application and flow characteristics. Higher solids can reduce volatile organic compounds (VOCs), shrinkage and drying time. But there can be problems with settling and sedimentation, as well as floating of the microspheres. In addition, cost of certain types of microspheres can be high. In this article I will show you how the microfibrillated cellulose technology can give anti-settling and anti-sedimentation of microspheres, as well as enabling you to choose less expensive microspheres and obtain the same performance, which typically has been associated with more expensive types.

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11. September 2019

Gneuss enabling the use of Microfibrillated Cellulose in polymer melts for thermoplastics

The pursue for a more efficient and increasingly EHS improved way of incorporating microfibrillated cellulose into polymers for polymer melts (thermoplastics) has been going on for years. Thermoplastics are an important source for many final products and applications. By introducing microfibrillated cellulose into polymers by the means of liquid suspension, Gneuss have been able to avoid the agglomeration of powder form similar particles, as well as improve the EHS profile of such a process.

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20. August 2019

The Future is Sooner Than You Think – it’s a Dynamic World out there

Long-standing policies towards research and development no longer support manufacturers’ success, as mergers and globalization continue, due to: 1) Demands for bigger profits from investors who are distant from the business reality; 2) Bigger investment in innovation needed to give future success; 3) Shortening timescales as globalization introduces pressures from BRIC economies.

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23. July 2019

Exilva Microfibrillated Cellulose & Polyurea: anti-settling & anti-sedimentation because of yield stress

Modified polyurea and Exilva Microfibrillated cellulose (MFC) can both be used as rheology modifier in a variety of industries to prevent sedimentation and settling. In this article, I review the ability of the materials to give a yield stress in a waterbased system and, because of that, provide anti-settling & anti-sedimentation behavior. Tune-in on a comparison between these two rheology additives.

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