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ARS Home » Southeast Area » New Orleans, Louisiana » Southern Regional Research Center » Cotton Chemistry and Utilization Research » Research » Publications at this Location » Publication #266288
Title: Effect of phosphorus and nitrogen on thermal decomposition kinetics of flame retardant cotton

Author
item Nam, Sunghyun
item Parikh, Dharnidhar
item Condon, Brian
item YAO, FEI - Louisiana State University

Submitted to: National Cotton Council Beltwide Cotton Conference
Publication Type: Proceedings
Publication Acceptance Date: 10/27/2011
Publication Date: 4/25/2011
Citation: Nam, S., Parikh, D.V., Condon, B.D., Yao, F. 2011. Effect of phosphorus and nitrogen on thermal decomposition kinetics of flame retardant cotton. National Cotton Council Beltwide Cotton Conference. 1438-1443.

Interpretive Summary:

Technical Abstract: Four kinetic methods, Kissinger, Friedman, Flynn-Wall-Ozawa, and modified Coats-Redfern, were used to study the activation energy, Ea, of the thermal decomposition of greige cotton nonwoven fabric treated with diammonium phosphate (DAP) and urea. The results show that the Ea is significantly influenced by phosphorus (P) and nitrogen (N). The Ea for the fabric treated with DAP alone continuously increased throughout the conversion (i.e. decomposition) process, while the Eas for those treated with mixtures of DAP and urea became constant at high conversions. The overall Ea increased with the addition of urea, and decreased by a further increase of urea. These effects of P and N on the Ea were explained by the enhanced thermal stability and the facilitated decomposition of cellulose chains in crystalline region.