Submitted to: Meeting Abstract
Publication Type: Abstract Only
Publication Acceptance Date: 7/12/2011
Publication Date: N/A
Technical Abstract: In this presentation, new approaches for flame retardant textile by using supercritical carbon dioxide (scCO2) and layer-by-layer processing will be discussed. Due to its environmentally benign character, the scCO2 is considered in green chemistry as a substitute for organic solvents in chemical reactions. An innovative approach for preparation of flame retardant woven and nonwoven fabrics were obtained by utilizing supercritical carbon dioxide with co-solvent. Our attempts at flame retardant cotton fabrics treated with low cost inorganic formulations, a new piperazine derivatives [tetraethyl piperazine-1,4-diyldiphosphonate (PDP), and tetramethyl piperazine-1,4-diyldiphosphonothioate (PDPT)] in scCO2 were done successfully. Secondly, flame retardant textile have been prepared by the layer-by layer assemblies of branched polyethylenimine (BPEI), kaolin, urea, diammonium phosphate (dibasic) on cotton fabrics. Three different kinds of cotton fabrics (print cloth, mercerized print cloth, and mercerized twill fabric) were prepared with solutions of mixture of BPEI, urea, diammonium phosphate (dibasic), and kaolin. The evidence of flame retardant chemical penetrations on cotton fabrics were confirmed by FT-IR, EA and SEM, and most of treated cotton fabrics were evaluated following flammability tests: methenamine pill test, limiting oxygen index (LOI, ASTM D2863-00), 45 degree angle flame test (clothing textiles test -- ASTM D1230; 16 CFR 1610), and vertical flame test (ASTM D6413-99; 16 CFR 1615, 1616).