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Thursday, 02 April 2020
Raw materials & technologies, Science today - coatings tomorrow

Bonding with chicken blood, lignin and sugar

Friday, 22 February 2013

The first European Coatings Conference on "Biobased adhesives” underlined the trend for the natural-based technology also in the adhesives business with interesting new developments.

64 people attended the first European Coatings Conference "Biobased adhesives"

64 people attended the first European Coatings Conference "Biobased adhesives"

The question driving the 64 conference participants was in how far the biobased issue is just a marketing force or as well a technological necessity. What is a clear outcome of the technical discussion groups was that a reasonable price/performance ratio is an absolute must. The most of the delegates thought in a polling that the customers would pay around 5 % more for this technology.

Have a look at our gallery for some impressions of this conference

But not only the price is a reason. Dr Angela Smits, Croda Polymers, The Netherlands explained that her discussion group summarised that the will for biobased technology needs to be in the peoples head. This could be realized with "a settled advertisement on biobased adhesives with sports or cosmetics".

Biobased raw materials are necessary

This conference overcame the gap between the question of a real necessity for biobased ones and the almost realized promising raw material developments.

Maja Kandula, Fraunhofer Insitute for Wood Research, WKI, Germany for example worked for phd-thesis with Kraft-Lignin. Although it shows that the ash content needs to be decreased, "the performance as a raw-material in polyurethane adhesives is already very well".

Dr Hermann Onusseit, Onusseit Consulting, Germany said that in former times bonding was 100 % biobased, as just taken from nature. This changed with the increased performance necessities and the possibilities derived from petrochemistry. So why going backwards?

The clear answer was given from the audience polling: 80 % of the delegates said that biobased rawmaterials will be able to substitute also petrochemical ones for reactive adhesive systems in a close future.

Good performance with biobased raw materials

That adhesives on biobased raw materials are able to keep the performance showed

  • Daniela Garcia, Insituto Nacional de Tecnologia Industrial, Argentina for interior wood furniture. She substituted formaldehyde in PUR-adhesives with dry chicken blood.
  • Dr Susan Sun, Kansas State University, US, improved the wet-adhesion significantly with soy proteins.
  • Dr Janek van Byren, University of Vienna, Austria showed a different approach. He gave an overview of biomimetic possibilities researched from salamanders, frogs and worms who already produce glue.

Also companies presented their abilities to go more into the biobased developments:

  • Dr Christina Diehl from Evonik Industries AG, Germany showed that the biobased polyester polyols do not only support ressouorce efficiency, but alo offer improved properties for reactive hot melt formulations.
  • Germain Fauquet from Arkema, France, was able to show that biobased amide rheological additives can be used for different processing temperatures.
  • Chris Schaekens, Purac, The Netherland introduced a new building block raw material derived from sugar and cellulose materials.

Biobased adhesives will be reality in a very short time

Sounds that the adhesives industry is prepared for the biobased technology. One evidence might be, that more than the half of the audience was sure, that in 10 years around 10 % of the petrochemical raw materials will be substituted.
Good to know that already 19 % of the delegates were working 100 % on biobased issues.

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