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Cooking Chemistry Transforms Proteins into High-Strength Adhesives
Jessica K Román1, Jonathan J Wilker1,2
1Department of Chemistry , Purdue University , 560 Oval Drive , West Lafayette , Indiana 47907-2084 , United States.
Journal of the American Chemical Society
|December 22, 2018
Summary
Researchers discovered that combining proteins and sugars creates strong, bio-based adhesives. This novel approach utilizes simple cooking chemistry for high-performance materials from renewable resources.
Area of Science:
- Materials Science
- Biochemistry
- Sustainable Chemistry
Background:
- Traditional protein-based glues have been replaced by petroleum-derived polymers like epoxies and cyanoacrylates.
- Current synthetic adhesives offer high performance but pose risks due to toxicity and reliance on finite resources.
- There is a critical need for high-performance adhesives derived from benign, renewable, and cost-effective feedstocks.
Purpose of the Study:
- To explore the potential of bio-based materials as replacements for synthetic adhesives.
- To investigate the adhesive properties resulting from the coupling of proteins and sugars.
- To establish a link between Maillard chemistry and the development of novel, high-strength adhesives.
Main Methods:
- Investigated the adhesive capabilities of materials formed by combining proteins and sugars.
- Explored the role of Maillard chemistry, a process central to food cooking, in creating these adhesive bonds.
- Tested the bonding strength of cross-linked proteins on various substrates, including metal and wood.
Main Results:
- Successfully created strong adhesives by coupling proteins and sugars.
- Demonstrated that Maillard chemistry is key to forming these robust protein-sugar cross-links.
- Achieved bonding strengths that, in some instances, surpassed the load-bearing capacity of the bonded substrates.
Conclusions:
- Simple Maillard chemistry offers a viable pathway to developing advanced adhesives.
- Protein-sugar interactions can yield high-performance materials suitable for demanding applications.
- This approach presents a sustainable alternative using low-cost, environmentally friendly components.
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