There was plenty of talk about biodegradable plastics from environmentalists in the 1990s. All the talk was about packaging, and much of the discussion lacked scientific grounding, even though it was embraced by many school science departments on the first one or two Earth Days. Biodegradability actually made little sense for much packaging because landfills are anaerobic – that is, they allow no oxygen or moisture, which are required for the degradation process. Degradation would allow toxins to leak into aquifers.
Look for biodegradability to move back into the forefront, however, and this time for engineering applications. New research projects, particularly outside the USA, are aimed at development of mechanically stronger plastics, as well as reinforcing fibers, that are made from plants. One reason is environmental: computer or car parts made from the materials would eventually biodegrade. The other is economic: the new materials may be more cost-effective than oil-based plastics given the price trajectory of hydrocarbons. One key player to watch: NetComposites which is leading a UK project valued at more than $1.5 million to develop biodegradable structural prototypes.
A composite based on a high-performance PEEK-like resin we told you about two years ago when it was still in R&D has now been licensed by the US Naval Research Laboratory (NRL) for commercial manufacturing.
Microsoft, HP, Dassault, and other industry heavyweights in 3D printing have launched a new 3DP file format, 3MF. The consortium says the spec will more fully describe a 3D model and will be interoperable with multiple applications, platforms, services, and printers.
NASA's been working on several different ongoing projects for 3D-printed rocket engine components in metals and now it's reached another first in aerospace 3D printing: a full-scale, 3D-printed rocket engine component made of copper.
Focus on Fundamentals consists of 45-minute on-line classes that cover a host of technologies. You learn without leaving the comfort of your desk. All classes are taught by subject-matter experts and all are archived. So if you can't attend live, attend at your convenience.