I have been writing about engineering plastics for more than 20 years, and I never had heard about any relationship between crystallinity and shish-kebabs. That is, until I saw the May 18 issue of Science magazine. It contains an article indicating that polyolefins crystallize into shish-kebab shapes (I couldn’t make this stuff up).More importantly, the researchers who wrote the article say they know how to manipulate the shape of these “shish-kebabs” so that the polymer structure becomes much stronger. "Our discovery is pertinent to the relatively strong and stiff plastics," says Julia Kornfield, chemical engineering professor at Caltech. "For example, it will allow manufacturers to make polymers for complex and beautifully shaped body panels with equal or better quality than currently available—and cheaper and faster." The lead author of the paper is Shuichi Kimata, a former postdoctoral researcher in Kornfield's Caltech lab. He linked Kornfield's group at Caltech with Yoshinobu Nozue's group at Sumitomo and collaborators at the University of Tokyo. The title of the Science paper is "Molecular Basis of the Shish-Kebab Morphology in Polymer Crystallization." What’s the path to commercialization? What’s the timetable? Or is this just an academic tease? Stay tuned.
A new compression molding compound material combines the light weight, strength, and rigidity of carbon fibers with the flexibility and lower cost of glass materials in a composite compatible with automotive production.
Plastic bearings are real and millions of them are in use doing heavy-duty jobs we used to think only metals could do. Some of Germany-based igus's bearings are traveling around the world as functional parts in a car to demonstrate what they can do.
Baxter showed off his 2.0-derived moves at ATX West this year. The big red guy still looks pretty much the same, but has some new abilities, mostly due to software. The research robot version is now being used in corporate R&D departments as a design platform.
End-production using 3D printing, including objects made of multiple materials in one pass, is getting closer to reality as we saw on the exhibit floor at the recent Pacific Design & Manufacturing Show.