Acrylated epoxidised soybean oil-based UV-curable coating

In a new study, a series of highly functional acrylates containing a triazine ring as the rigid core and long fatty chains as soft arms were synthesised, these synthesised acrylates were then added to acrylated epoxidised soybean oil (AESO) to prepare UV-curable coating.

Soybeans and a soy sprout.
Compared with commercial petroleum-based acrylates with a similar structure -

The chemical structure and molecular weight of these acrylates were characterised through Fourier transform infrared spectroscopy, nuclear magnetic resonance, and gel permeation chromatography, and the curing behaviour of the coating was studied using real-time infrared.

The results of tensile testing, dynamic thermomechanical analysis and thermogravimetric analysis showed that the addition of highly functional acrylates significantly improved the thermal and mechanical properties of UV-cured films compared with pure AESO.

Improved performance of AESO-based UV-cured coating

In addition, the hardness of the AESO-based UV-cured coating was enhanced after the addition of highly functional bio-based acrylates. Compared with commercial petroleum-based acrylates with a similar structure, highly functional bio-based acrylates have a higher bio-based content and show more comprehensive performance.

The study is published in: Progress in Organic Coatings Volume 134, September 2019, Pages 342-348.

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