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ITEC 2014 Forensic Tire Peer Review, Paper 12: Do Old Worn Out Tires Retain Anti-Degradents

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    Anti-degradants are important chemical ingredients that are added to rubber compounds to protect the rubber from chemical reactions with oxygen and ozone.  The anti-degradants reduce, but cannot stop, the oxidative aging process in rubbery materials.  One may want to determine if the rubber components of a tire are depleted of anti-degradants.  Or, if not depleted then the amount of each anti-degradant chemical that is currently present in the rubber components that comprise a tire may be of interest.  Rubber materials, harvested from the tread, sidewalls, and steel belts of used tires, have been analyzed.  The methods used for the analysis, specific analytical details to consider, and the analytical results obtained from old, worn tires manufactured between 1993 to 2000 and recovered from the field will be presented.  Do tires, even up to twenty years old, still contain protective anti-degradants?  The GC-mass spec provides the answer.  Presented by James Rancourt, Ph.D., Founder, CEO, Polymer Solutions, Inc.

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