Kinetics of Thermal Degradation of Viscose Fiber and Fire Retardant Viscose Fiber

Abstract

The thermal decomposition behavior of fire retardant viscose fiber and viscose fiber were studied by thermogravimetric analysis (TGA) under air atmosphere at heating rates of 10, 20, 30 and 40 o C/min. The activation energy and pre-exponential factor were calculated by using the Kissinger method, Flynn-Wall-Ozawa (FWO) method and Satava-Sestak method. The results show that the activation energy for the fire retardant viscose fiber calculated by Kissinger and FWO method was 102.51kJ/mol and 103.73kJ/mol, respectively. The activation energy for viscose fiber calculated by Kissinger and FWO method was 103.58 kJ/mol and 104.83kJ/mol, respectively. The kinetic mechanism function of fire retardant viscose fiber was G(α) = [(1+α) 1/3-1] 2 following a kinetic model of three-dimensional diffusion and the kinetic mechanism function of viscose fiber was G(α) = α 3/2 following the power function rule.

Flammability and comfort properties of blended knit fabrics made from inherently fire-resistant fibers to use for fire fighters

“…Areal density of the sample was 100 g/m 2 , wales density 10/cm and 12 twists/cm in the yarn. It was also demonstrated in the previous research reported that plain knitted fabrics with lower yarn twist results in higher air permeability [ 45 ]. It was observed that sample S20 containing 30% FR-polyester and 70% Nomex fibers shows the lowest air permeability.…”

“…At higher temperatures, significant amount of mass loss is observed. The previous findings reported the decomposition of carbon fibers results in emission of various products including H 2 O, CO, CO 2 and CH 4 [ 45 ].…”

“…This sample also has 2nd highest thickness and course density. It was suggested in earlier research that fabric thickness and porosity significantly influences the air permeability of knitted fabrics [ 45 ].

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Synergistic Effect of Screen-Printed Single-Walled Carbon Nanotubes and Phosphorylated Cellulose Nanofibrils on Thermophysiological Comfort, Thermal/UV Resistance, Mechanical and Electroconductive Properties of Flame-Retardant Fabric

“…The first mass loss (of about 5%) appeared between 40 °C and 120 °C, which represents the evaporation of the absorbed water. The 38% mass loss in the range of 230 °C–310 °C was rapid, and corresponded to the degradation of the viscose [ 51 ], being also observed as the first broad exothermic peak on the DSC thermogram ( Figure 6 b). The following step started at around 375 °C and belonged to the melting temperature of the meta-aramid, with the degradation temperature around 500 °C [ 52 ], where around 20% mass was lost.…”

Synergistic effect of screen-printed Al(OH)3 nanoparticles and phosphorylated cellulose nanofibrils on the thermophysiological comfort and high-intensive heat protection properties of flame-retardant fabric

“…The first mass loss (of about 5%) appeared between 40°C and 120°C, attributed to the evaporation of the absorbed water. The 38% weight loss in the range of 230°C-310°C was rapid and corresponded to the degradation of the viscose, 45,46 being also observed as the first broad exothermic peak on the DSC thermogram (Figure 6(b)). The following step started at around 375°C and belonged to the melting temperature of the meta-aramid, with the degradation temperature around 500°C, 47 where around 20% weight was lost.…”