Bioadhesive derived from distillers’ dried grains with solubles
In a study, a bioadhesive is prepared from distillers' dried grains with solubles (DDGS). The byproduct of corn ethanol production is used primarily as an alternative animal feed thanks to its high protein content and low cost.
Hydroxyethyl acrylate (HEA) was incorporated into the formulation to improve the bonding strength and moisture resistance.
Adequate for bonding plywood panels
The greatest increase in lap-shear strength was observed in the adhesive containing 50% of the acrylic resin. Water resistance was absent from the original DDGS adhesive, but established upon the inclusion of HEA. HEA was found to self-polymerize under the hot-pressing conditions and form a co-continuous phase with the protein adhesive derived from DDGS. The strength of the adhesives was adequate for bonding plywood panels. More work must be done to further enhance the performance of the adhesives for wider applications.
The study is published in: Applied Polymer Science, Volume 135, Issue 6, February 10, 2018.
Event Tip
On 5 December the European Coatings Seminar Composition of reactive sealants and adhesives offers you the opportunity learn all relevant basics to start working on this important topic.
