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"Green" Tires That Cut CO2 Emissions on the Anvil
The new tires could help add an extra mile or two per gallon to a car's fuel economy.
Chemical and Engineering News, (C and EN) ACS' weekly newsmagazine's Senior Editor Alexander Tullo explained that rolling resistance - the friction that tires encounter when rolling - are a major factor in a vehicle's fuel economy.
It can determine up to 20 percent of fuel economy. Overcoming it accounts for 4 percent of global carbon dioxide emissions from burning fossil fuels.
For years, tire makers and their raw material suppliers have been eyeing lower rolling resistance as a way to boost fuel economy and promote a cleaner environment.
But they have been thwarted by a principle in the tire world called the "magic triangle of tire technology."
It holds that an improvement to rolling resistance has to come at the expense of wet-road grip and durability.
That barrier is now falling, thanks to the development of new materials, including new forms of silica and nanomaterials.
These new materials include a nanogel that improves abrasion resistance, grip and rolling resistance of tires as well as a newly-developed resin that helps tires retain air longer.
Source-ANI
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