Determination of toxic products emissions of polymers thermal decomposition using fluidised bed reactor and FTIR analysis

Rybiński, Przemysław; Bradło, Dariusz; Żukowski, Witold; Syrek, Bartłomiej

doi:10.1016/j.polymertesting.2019.106040

Cited by 13 publications

(17 citation statements)

References 26 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It has a special feature of rapid ignition and the collapse of the foam structure following violent fire growth [13][14][15]. To understand the potential hazards to humans and the safety of building insulation, flammability/flame retardancy [16,17], ignition time [18], flame spread [19][20][21][22][23], and toxic-products emissions [24] became major issues in polymer combustion research fields.…”

Section: Introductionmentioning

confidence: 99%

Effect of Foaming Temperature on Microstructure, Mechanical Properties and Flame Spread Rate in PET–PEN Copolymer

2021

View full text Add to dashboard Cite

Polymer foams are expanding their applications into functional materials. Partial foam structure has been fabricated in polyethylene terephthalate–polyethylene naphthalate (PET–PEN) copolymer by solid state foaming. Through SEM image analyses, a potential to fabricate gradient foam structures with micropores and unfoamed skin layers has been identified. The post-foaming temperature Tf tune the pore size distribution. Radial distribution of micromechanical properties, indentation hardness and elastic modulus were measured for the partial foam and their values were around 0.12 GPa and 2.0 GPa, respectively, for the outer foamed region. Foaming temperature affects the glass transition temperature Tg, the coefficient of thermal expansion and the flame spreading rate. For the range of Tf ≤ 60°C, thermal expansion coefficients for T> Tg are about 0.5 m/m°C (steep expansion group, SEG). When Tf is above 80 °C, they are around 0.02 m/m°C (mild expansion group, MEG). The burning rate of SEG is 2.8 times higher than that of MEG.

show abstract

Section: Introductionmentioning

confidence: 99%

Effect of Foaming Temperature on Microstructure, Mechanical Properties and Flame Spread Rate in PET–PEN Copolymer

2021

View full text Add to dashboard Cite

show abstract

“…Method of quantitative and qualitative analysis of toxic gaseous products, in detail was described in previous authors publication [13][14][15][16][17][18][19][20][21][22][23][24][25][26][27][28][29][30][31].…”

Section: Methodsmentioning

confidence: 99%

“…Scheme of the fluidized bed reactor: 1-computer storing data from FTIR analyzer; 2-heated probes for sampling the flue gases; 3-batcher; 4-exhaust fan; 5-cyclone; 6-ash trap for coarser particles; 7-movable radiation shield; 8-heating jacket; 9-bubbling bed; 10-air rotameter; 11-blower, for fluidizing air; 12-two thermocouples; 13-flat, perforated metal plate distributor; 14-A/D convertor for thermocouple signals; 15-computer storing chemical analyses quantities and temperature; A-mobile conditioning system of Gasmet DX-4000, B-analyzer FTIR (Gasmet DX-4000), C-Horiba PG250, P-Peltier's cooler [31].…”

Section: Figurementioning

confidence: 99%

See 1 more Smart Citation

Influence of Thermal Decomposition of Wood and Wood-Based Materials on the State of the Atmospheric Air. Emissions of Toxic Compounds and Greenhouse Gases

et al. 2021

Self Cite

View full text Add to dashboard Cite

This paper presents the energy characteristics of wood and wood-based materials in the form of commercially available pellets, furniture board (MDF) and OSB. Toxicometric indices were determined for gaseous destructs arising from thermal decomposition and combustion of the materials studied. The paper proves that combustion conditions are crucial in terms of toxic destructive emissions. It has been shown that the combustion of wood-based materials under controlled conditions can lead to equally low emissions of toxic wastes as the combustion of traditional wood materials. The paper also presents the index of greenhouse gas emission, the so-called CO2 equivalent, for the examined wood and wood-based materials.

show abstract

“…Undoubtedly, the great advantage of the proposed method, in relation to the laboratory methods currently used, is the possibility of a simultaneous qualitative and quantitative analysis of released toxic gases. The determination can be carried out at a strictly defined temperature, including that corresponding to the maximum rate of decomposition of the tested material, which directly translates into the accuracy of determining the FED dose or toxicometric index [16]. The FED approach to determine toxicity of gases emitted form materials in the case of fire is generally accepted and commonly used [17,18].…”

Section: Introductionmentioning

confidence: 99%

Impact of Basalt Filler and Ceramizable Additives on the Toxicity of Gaseous Products Emitted from Thermal Decomposition of Silicone Rubber Composites

et al. 2019

Self Cite

View full text Add to dashboard Cite

The article illustrates the impact of basalt filler in the form of flakes and fibres on the toxicity of gaseous products that formed during the thermal decomposition of silicone rubber composites. The values of specific emissions of gases were determined with the help of the IR spectroscopy and further applied to calculate the toxicometric index. The presented method of measuring the concentrations of gaseous products resulting from thermal decomposition consists in the application of a fluidised bed reactor, which makes it possible to conduct the decomposition of a sample at a precisely assumed temperature value and imitate the conditions of a real fire. At a temperature lower than 700 °C, the gases resulting from the thermal decomposition of composites are particularly toxic due to the presence of significant concentrations of formaldehyde that does not undergo oxidation to more stable inorganic products. At a temperature of 600 °C the toxicity of gases for the samples with ceramizable additives and without them was similar. In the first case, there appeared to be a positive synergistic effect of mineral and basalt additives, and the basalt additives themselves increased the toxicity of gases. At higher temperatures of decomposition, the exponentially increasing rate of the oxidation reaction in the gaseous phase results in the lack of significant differences between the toxicity of gases for the samples with and without basalt additives. The toxicometric index value at temperatures of 700 °C and 800 °C was by one or two orders of magnitude higher, respectively, than the one that was observed in the temperature range of 500–600 °C, as inorganic components appear in the place of formaldehyde.

show abstract

Determination of toxic products emissions of polymers thermal decomposition using fluidised bed reactor and FTIR analysis

Cited by 13 publications

References 26 publications

Effect of Foaming Temperature on Microstructure, Mechanical Properties and Flame Spread Rate in PET–PEN Copolymer

Effect of Foaming Temperature on Microstructure, Mechanical Properties and Flame Spread Rate in PET–PEN Copolymer

Influence of Thermal Decomposition of Wood and Wood-Based Materials on the State of the Atmospheric Air. Emissions of Toxic Compounds and Greenhouse Gases

Impact of Basalt Filler and Ceramizable Additives on the Toxicity of Gaseous Products Emitted from Thermal Decomposition of Silicone Rubber Composites

Contact Info

Product

Resources

About