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Title

THERMAL ANALYSIS (DSC, TGA) OF TEXTILE FLAME RETARDANT WITH LOWER ENVIRONMENTAL IMPACT

AuthorsManich, Albert; Alonso, Cristina ; Pérez-Rentero, Sonia; Coderch, Luisa; Martí, Meritxell
KeywordsDSC
TGA
Textiles
Flame retardants
Cotton/polyester
Issue DateJun-2019
CitationAUTEX2019 19th World Textile Conference on Textiles at the Crossroads, 11-15 June 2019, Ghent, Belgium
AbstractThe low thermal stability, easy ignition and rapid combustion of cellulose fibres represent a weaknesses and limitation in the production of fire-protective textiles when they are blended with synthetic fibres. Consequently, the application of flame retardants has been traditionally focussed on their effect on cellulosic fibres. A great number of flame retardants have been used in order to decrease the combustible power of textiles and favour the release of inert volatiles [1]. The toxicity and the environmental impact of flame retardants based on bromide, formaldehyde and antimony, turn aside the interest for flame retardants based on other more healthy and environmental friendly alternatives. The application of flame retardants in the most common used polyester/cotton blends needs to be into account the different behaviour of both components when blended. The application of thermal analysis techniques like differential scanning calorimetry (DSC) and thermogravimetric analysis (TGA) lead to results that, according to Qin Chen and Tao Zhao [2], are in accordance with those of the heat release rate given by a micro-scale combustion calorimeter MCC. The DSC diagrams of a polyester/cotton will show the first sharp peak of polyester melting about 255ºC, a second broader peak attributed to the decomposition of cotton around 360ºC, and a third one associated to the decomposition of polyester at temperatures above 400ºC. The TGA curves will draw two stages: the first starting around 310ºC and ending approximately at 380-390ºC, caused by the decomposition of cellulose, and the second from there until 470-485ºC, which is mainly attributed to the decomposition of polyester [2]. The objective of this work is to evaluate the effect of three different non toxic and more environmental friendly flame retardants based on ammonium sulfamate, ammonium polyphosphate and guanidine phosphate, on the thermal behaviour of a polyester cotton 50/50 fabric through the application of TGA and DSC thermal techniques.
URIhttp://hdl.handle.net/10261/184976
Appears in Collections:(IQAC) Comunicaciones congresos
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