I spent a month last year in the underdeveloped country of Namibia. Residents were proud to tell me that Namibia is the only country in the world that has a constitution that embraces environmental sustainability.To Namibians, it was a recognition that protection of theirs materials resources was critical to their future. Since I’ve returned to the US, however, it’s become clear that the concept of sustainability, and specifically, sustainable design, will soon become important to us as well.
One specific issue I want to focus on is use of renewable resources as a feedstock for polymers. The immediate reason isn’t really environmental, at least for design engineers. Unstable oil supplies triggered massive runups in plastics prices two years ago. Today it makes sense to study the potential of corn-based polymers for mechanical design projects. Sound crazy? At the giant plastics fair in Germany this fall (K 2007), DuPont plans to present technical data on new grades of Sorona and Hytrel that are corn based. Stay tuned.
Oak Ridge National Laboratory has developed a surface preparation method to improve joining carbon composites with aluminum, with potentially far-reaching ramifications for high-volume industrial applications.
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