One of the most significant features of BioVinyl compounds is their improved heat stability compared to conventional phthalate-plasticized compounds. Since overheating is a big problem with vinyls, stabilizers are generally used.
"But BioVinyl compounds are more heat stable so you can run the extrusion process faster or run it longer without a lot of degradation of the polymers," said Cappucci. Another effect of better heat stability is the reduced color change of the compounds made for weatherstripping and gasketing than standard vinyl compounds after accelerated weathering tests.
Based on life cycle analysis tests conducted by The Dow Chemical Company and reviewed by independent third parties, ECOLIBRIUM Bio-Based Plasticizers can help reduce greenhouse gas emissions by as much as 41 percent or 0.7 lb. of carbon dioxide emissions for every 1.0 lb. of compound made with DINP, says Cappucci.
The ECOLIBRIUM plasticizers are manufactured by Dow Electrical and Telecommunications, a unit of The Dow Chemical Company, using non-food plant byproducts. As the result of a recently announced joint collaboration agreement, Teknor Apex has the exclusive right to market flexible vinyl compounds containing the DOW ECOLIBRIUM Bio-Based Plasticizers in certain applications in North America. Those applications include consumer and industrial products, automotive components, certain medical devices, and certain wire and cable uses.
Teknor Apex has developed 80 custom BioVinyl compounds to date. The company also makes non-phthalate PVC compounds and DEHP-free PVC materials, and supplies versions of those compounds with low VOC (volatile organic compound) emissions.
Rob, waste regulations don't directly govern what gets manufactured, not yet anyway. The issues seem to be centered not so much on the regulation end but on the total infrastructure and interconnections among materials manufacturers, product manufacturers, waste management companies, sorters/recyclers (do they know how to handle different mixes? what recycling processes do they use?), materials manufacturers again (do they use their own recycled materials?) and industrial (if not consumer!) end-users.
Most of the effort to date has been on the front end, trying to make plastics out of bio-based, and now non-food bio-based, materials, and how to make ones that cost the same or less and have the same or better performance.
EOL issues are definitely a pressing matter and are certainly being considered: the new term is cradle-to-cradle. The thing is, making plastics recyclable--whether they're bio-based or not--involves a different set of technical challenges and also involve a lot of infrastructure issues, as I discovered doing the reporting for my upcoming May feature on making alternative fuels from recycled plastic.
I was guessing that might be the answer. We may be a ways away from the time that end-of-life environmental issues begin to become part of the equation. But it's bound to become important eventually, perhaps as an eventual add-on to waste management regulations.
Dave, the idea seemed to be that since we're trying to get rid of phthalates, why not go even further and do it with bio-based materials? I also found it interesting that the company spokesman said their customers are very interested in sustainable solutions with low carbon footprints, so these customers can meet their own sustainability goals.
BTW, I also mentioned Arkema's castor-oil based nylon 11 in my recent bioplastics article:
Rob, the presence of plant matter alone does not make a plastic biodegradable or compostable. That's an unfortunate, and common, misunderstanding, because it makes it seem like we're a lot closer than we are to such goals. The vast majority of bio-plastics right now have been designed to be drop-in replacements for petro-based ones, and are usually blended with them, as is this one. The result is not biodegradable or compostable unless it's designed to be so. (This one, also, is not a vinyl compound, but an elasticizer that mixes with vinyl to form that compound.) As Dave points out, the PVCs have not changed, only the additive that makes them flexible. The big deal here is getting rid of phthalates. EOL issues are an entirely different set of problems to solve.
In a related story, a tragic explosion last month which killed two people in a chemical plant in Germany may be opening the door to bio-based nylons. The explosion has tightened the supply of nylon-12, which is widely used in automotive fuel line applications.
Evonik, the company which had the explosion in Germany, has been suggesting its bio-based Vestamid Terra nylon grades as an alternative to the nylon-12 grades which have become temporarily unavailable. These new nylon grades are derived from castor oil.
Another supplier, Arkema, makes a nylon-11 which is also derived from castor oil, and may make an acceptable substitute for nylon-12. It was mentioned in a Design News article last year.
While the exposion in Germany was tragic, it will be interesting to see whether it leads to greater use of sustainable materials.
Lantronix Inc. has expanded its line of controllers for sensor networks with the release of a rugged controller that improves management of automation systems used in a number of industries, including manufacturing, oil and gas, and chemicals.
Inspired by the hooks a parasitic worm uses to penetrate its host's intestines, the Karp Lab has invented a flexible adhesive patch covered with microneedles that adheres well to wet, soft tissues, but doesn't cause damage when removed.
A quick look into the merger of two powerhouse 3D printing OEMs and the new leader in rapid prototyping solutions, Stratasys. The industrial revolution is now led by 3D printing and engineers are given the opportunity to fully maximize their design capabilities, reduce their time-to-market and functionally test prototypes cheaper, faster and easier. Bruce Bradshaw, Director of Marketing in North America, will explore the large product offering and variety of materials that will help CAD designers articulate their product design with actual, physical prototypes. This broadcast will dive deep into technical information including application specific stories from real world customers and their experiences with 3D printing. 3D Printing is