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Sustainably sourced components to generate high-strength adhesives

Author

Listed:
  • Clayton R. Westerman

    (Purdue University)

  • Bradley C. McGill

    (Purdue University)

  • Jonathan J. Wilker

    (Purdue University
    School of Materials Engineering, Purdue University, Neil Armstrong Hall of Engineering)

Abstract

Nearly all adhesives1,2 are derived from petroleum, create permanent bonds3, frustrate materials separation for recycling4,5 and prevent degradation in landfills. When trying to shift from petroleum feedstocks to a sustainable materials ecosystem, available options suffer from low performance, high cost or lack of availability at the required scales. Here we present a sustainably sourced adhesive system, made from epoxidized soy oil, malic acid and tannic acid, with performance comparable to that of current industrial products. Joints can be cured under conditions ranging from use of a hair dryer for 5 min to an oven at 180 °C for 24 h. Adhesion between metal substrates up to around 18 MPa is achieved, and, in the best cases, performance exceeds that of a classic epoxy, the strongest modern adhesive. All components are biomass derived, low cost and already available in large quantities. Manufacturing at scale can be a simple matter of mixing and heating, suggesting that this new adhesive may contribute towards the sustainable bonding of materials.

Suggested Citation

  • Clayton R. Westerman & Bradley C. McGill & Jonathan J. Wilker, 2023. "Sustainably sourced components to generate high-strength adhesives," Nature, Nature, vol. 621(7978), pages 306-311, September.
    • Handle: RePEc:nat:nature:v:621:y:2023:i:7978:d:10.1038_s41586-023-06335-7
    DOI: 10.1038/s41586-023-06335-7
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    Cited by:

    1. Xiaoming Xie & Yulian Jiang & Xiaoman Yao & Jiaqi Zhang & Zilin Zhang & Taoping Huang & Runhan Li & Yifa Chen & Shun-Li Li & Ya-Qian Lan, 2024. "A solvent-free processed low-temperature tolerant adhesive," Nature Communications, Nature, vol. 15(1), pages 1-8, December.
    2. Quanqian Lyu & Miaomiao Li & Lianbin Zhang & Jintao Zhu, 2024. "Structurally-colored adhesives for sensitive, high-resolution, and non-invasive adhesion self-monitoring," Nature Communications, Nature, vol. 15(1), pages 1-12, December.

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