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Biodegradable waste confusion

September 10, 2009

Analysis of:Biodegradable waste bags "more damaging" than PE | www.europeanplasticsnews.com

The term Biodegradable has become a misleading term to indicate degradability in the environment (above and below ground) with controlled degradation rates. While the technology has moved from natural to artificial ingredients the definition, testing and politicization of the term has everyone confused.

BPA Bisphenol A Levels in Plastic

April 5, 2009

Analysis of:Legislative floodwaters rise against BPA as packagers, suppliers evaluate options | my.packexpo.com

Until the EPA in coordination with those involved in the chemical industry finalize those test methods that are required to deal with this issue and those issues revolving around estrogenic effects from chemical mimics of estrogen chemicals we will continue to debate the issues. Clear Plastic replacements for rigid packaging using PC do exist but the debate over finding suitable replacements with comparable physical chemical properties and cost performance will limit their introduction. Chemically BPA is one of only many new chemistries that EPA will be monitoring from all plastics. PAH, Phthalates,Adipates;etc will also come under fire in the next two years.

Recycled Materials

July 5, 2007

Analysis of:The Truth About Recycling | www.economist.com

If we are speaking of recycled tire rubber the answer is absolutely YES its worth the effort. If we are discussing recycled polyolefins or condensation polymers its YES and NO depending on the end use application. However, recent developments in molecular and supramolecular technology has allow new molecular modifiers to be introduced for both polyolefins and condensation polymers that allow recyled materials to be processed at temperatures significantly lower than stand processing conditions. For Nylon 6,6 we can now go to 265C and for Nylon 6 250C and for polyolefins 50C lower processing and for polyimides 80C lower. Since degradation is related to temp and residence times both are benefited by these new chemistries.

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