Study of compounds emitted during thermo-oxidative decomposition of polyester fabrics

Abstract

Compounds emitted during thermo-oxidative decomposition of three commercial polyester fabrics for indoor outfi t and decorations (upholstery, curtains) were studied. The experiments were carried out in a fl ow tubular furnace at 600 o C in an air atmosphere. During decomposition process the complex mixtures of volatile and solid compounds were emitted. The main volatile products were carbon oxides, benzene, acetaldehyde, vinyl benzoate and acetophenone. The emitted solid compounds consisted mainly of aromatic carboxylic acids and its derivatives, among which the greatest part took terephthalic acid, monovinyl terephthalate and benzoic acid . The small amounts of polycyclic aromatic hydrocarbons were also emitted. The emission profi les of the tested polyester fabrics were similar. The presence of toxic compounds indicates the possibility of serious hazard for people during fi re.