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Home NEWS Science News Biology

Going ‘green’ with plant-based resins

Bioengineer by Bioengineer
August 16, 2017
in Biology
Reading Time: 2 mins read
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Airplanes, electronics and solar cells are all in demand, but the materials holding these items together — epoxy thermosets — are not environmentally friendly. Now, a group reports in ACS' journal Macromolecules that they have created a plant-based thermoset that could make devices "greener."

Thermosets are resins that, when cured, undergo a change that makes them strong and stable. Once thermosets are molded into a shape, they typically are set and cannot be reworked. These materials are frequently used as adhesives and coatings in electronics, appliances and aircraft. But most epoxy thermosets are made with nonrenewable materials, and some contain substances that can potentially harm the environment. And because of their structures, they cannot break down or be recycled. Plant-based thermosets are commercially available but they are usually weak and easily break. Jian-Bing Zeng and colleagues wanted to create a safe and strong plant-based thermoset.

The team developed a new curing agent that was made of components of castor oil, which is derived from a plant. When the researchers used the agent on a soybean-based epoxy thermoset– also derived from a plant — it became more crystalline. That made the material stronger, and more durable and heat-resistant than before. In addition, light passed through the soybean-based thermoset, potentially making it ideal for applications, such as for use in solar cells.

###

The authors acknowledge funding from the National Science Foundation of China, the Basic and frontier research project of Chongqing, and the Fundamental Research Funds for the Central Universities.

The abstract that accompanies this study is available here.

The American Chemical Society, the world's largest scientific society, is a not-for-profit organization chartered by the U.S. Congress. ACS is a global leader in providing access to chemistry-related information and research through its multiple databases, peer-reviewed journals and scientific conferences. ACS does not conduct research, but publishes and publicizes peer-reviewed scientific studies. Its main offices are in Washington, D.C., and Columbus, Ohio.

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