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Home  > Publications  > Blog  > Lignins - A "nice-to-have"!

Sunday, 15 September 2019

Lignins - A "nice-to-have"!

Thursday, 17 July 2014 | Posted by: Michael Richter, European Coatings Journal

Lignin – Yes, this is a "nice-to-have” but chemically by far too inert and too difficult to get the monomers separated! Really?

Give it a try

Lignin – Yes, this is a "nice-to-have” but chemically by far too inert and too difficult to get the monomers separated! That’s what I was told several times, if a conversation accidentally came to biobased materials and lignin as a starting point in particular.
But what about giving this complex natural product a chance and let it play a role in preparing polyurethanes? This was obviously the idea of Stéphanie Laurichesse and her coworkers as they started to investigate some pretty interesting experiments.

The experiments

First of all, they combined fatty acids (oleic acid) with lignin to construct a macropolyol. This macropolyol was then added to previously synthesised prepolymers (from different PPG´s and 4-4´-MDI) to obtain different polyurethane macromolecular architectures.
By that they obtained different polyurethanes which successfully passed different tests and presented advanced properties.

What come´s next?

To cut this long story short: A new polymer, containing a share of up to 89% renewable material in combination with promising technical properties makes at least me being keen on future studies.

Now it’s your turn!

What is your opinion? Do you have any suggestions or ideas?
I am looking forward to your comments and an interesting discussion!

Kind regards
Michael Richter

Reference:

S. Laurichesse, C. Huillet, L. Avérous, Original polyols based on organosolv lignin and fatty acids: new bio-based building blocks for segmented polyurethane synthesis, Green Chem. 2014, published online 19 Jun 2014

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Author

Michael Richter
European Coatings Journal
Michael Richter
Scientific Consultant
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