Isocyanate emissions from pyrolysis of mattresses containing polyurethane foam

Abstract

18This study examined the emissions of powerful asthmatic agents called isocyanates from Additionally, a qualitative search for so far unknown isocyanates was performed in 33 samples from the pyrolysis of FPUF at 300, 400 and 850ºC. It was confirmed that six 34 different aminoisocyanates at 300ºC were evolved, whereas at 400 and 850ºC only five 35 of them were detected. The general trend observed was a decrease of the aminoisocyanate 36 levels with increasing pyrolysis temperature.

Isocyanic acid (HNCO) and its fate in the atmosphere: a review

“…89 These results depended on the re temperature, with the highest yield percentage corresponding to the highest burn temperature. 89 Fire tests involving vehicles and their interior, exterior, and engine components have also been investigated for their emissions of isocyanates. 90,91 Signicant amounts of isocyanates were found to be emitted from vehicular res ranging from 0.0059-0.0668 mg m À3 .…”

“…86 In laboratory test res of both exible polyurethane foam and viscoelastic memory foam mattresses, the total yields of isocyanates ranged from 1.43-11.95 mg m À3 and 0.05-6.13 mg m À3 , respectively. 89 Further, it was found that HNCO made up 34-99% and 2-98% of total NCO emissions from exible polyurethane foam and viscoelastic memory foam mattresses, respectively. 89 These results depended on the re temperature, with the highest yield percentage corresponding to the highest burn temperature.…”

“…89 Further, it was found that HNCO made up 34-99% and 2-98% of total NCO emissions from exible polyurethane foam and viscoelastic memory foam mattresses, respectively. 89 These results depended on the re temperature, with the highest yield percentage corresponding to the highest burn temperature. 89 Fire tests involving vehicles and their interior, exterior, and engine components have also been investigated for their emissions of isocyanates.…”

“…HNCO and other isocyanates have been measured to be a combustion product of materials commonly found in buildings, such as glass, rubber, wool, foam, optical cables, carpet, mattresses and wood. [85][86][87][88][89] Glass wool, nitrile rubber and melamine emitted isocyanates between 2000 and 4000 ppbv in laboratory test res. 86 HNCO was consistently the major product quantied in test res with manufactured polyurethane materials.…”

Glycerin‐Based Polyurethane Obtained by Inverse Emulsion: Comparison Between Magnetic Induction and Conventional Heating

“…[1,2] Although most of the polymers of this group have a high resistance to hydrolysis, these have been studied due to their high biodegradability. [3,4] Among its applications, the production of paints, varnishes, [5] and foams [6] deserves particular attention. They can present different behaviors depending on their synthetic conditions and have considerable permeability, mainly since it can be controlled according to the ratio of their hydrophobic and hydrophilic chain moieties.…”