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Mechanistic studies on the action of ammonium phosphate on polymer fire retardancy

Kishore, K and Mohandas, K (1981) Mechanistic studies on the action of ammonium phosphate on polymer fire retardancy. In: Combustion and Flame, 43 . pp. 145-153.

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The mechanism of fire retardant action of mono- and diammonium phosphates on polystyrene has been investigated. Ignition delay and mass burning rate studies reveal that the phosphates bring down both parameters considerably though to different extents. This has been adequately explained on the basis of the existing combustion models and physicochemical behavior of the material. Similar to their action on cellulosic materials, phosphates bring about fire retardancy in polystyrene via char formation. This is suggested to occur through a series of processes consisting of initial peroxide formation, decomposition to alcohols and aldehydes, formation of alkyl-phosphate esters, dehydration and subsequent char formation. Infrared and mass spectral studies support this mechanism.

Item Type: Journal Article
Publication: Combustion and Flame
Publisher: Elsevier Science
Additional Information: Copy right of this article belongs to Elsevier Science.
Department/Centre: Division of Chemical Sciences > Inorganic & Physical Chemistry
Date Deposited: 13 Jan 2010 05:07
Last Modified: 13 Jan 2010 05:07
URI: http://eprints.iisc.ac.in/id/eprint/22761

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