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Line 6: The '''limiting oxygen index (LOI)''' is the minimum concentration of oxygen, expressed as a percentage, that will support combustion of the polymer. It is measured by passing a mixture of O<sub>2</sub> and N<sub>2</sub> over a burning specimen, and reducing the O<sub>2</sub> level until a critical level is reached. <ref>Definition taken from Principles of Polymer Engineering (2nd edition) by N.G. McCrum , C.P. Buckley, and C.B. Bucknall</ref> ==References== ~~<references />www.saassociates.com/pdf/criticaloxygen.pdf~~ <references /> {{chemistry-stub}}

Limiting oxygen index: Difference between revisions