Metabolix is moving forward with its plans to produce bioengineered polymers from crops other than corn. The Massachusetts company announced it has completed a field trial of tobacco, genetically engineered to “express” polyhydroxyalkanoate (PHA) biobased polymers. In the Metabloix plan, crops such as switchgrass are bioengineered to create a polymer that grows within the plants’ molecular structure.
Tobacco will not be one of those plants when, and if, the idea goes commercial. “Tobacco was one of the crops they were working with in the lab and they were able to gain field trials,” says a company spokesperson. “They saw it as an opportunity to use it as a test crop to lay the groundwork for planning and permitting activities for field trials in bioengineered, non-food oilseed and biomass crops (such as switchgrass and sugarcane) producing PHA.”
Many of the materials in this slideshow are resins or elastomers, plus reinforced materials, styrenics, and PLA masterbatches. Applications range from automotive and aerospace to industrial, consumer electronics and wearables, consumer goods, medical and healthcare, as well as sporting goods, and materials for protecting food and beverages.
Engineers trying to keep track of the ever-ballooning number of materials and machines for additive manufacturing and 3D printing now have some relief: a free searchable database with more than 350 machines and 450 different materials.
At JEC Europe Dow Automotive introduced a new ultra-fast, under-60-second molding cycle time for its commercial-grade VORAFORCE 5300 epoxy resin matrix for carbon composites. It's aimed at high-volume automotive manufacturing.
Proto Labs is now offering an optical liquid silicone rubber (LSR) quick-turn molding service using Dow Corning's LSR material. Optical LSR is a transparent, flexible thermoset material that's replacing glass in many optical applications, especially lighting.
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