Investigation of the thermal decomposition of a viscose fiber in the presence of several additives by means of IR spectroscopy

Vecher, A.A.; Es'kov, V. M.; Zhuikova, T. N.; Zaichikov, S. G.; Zak, V. S.; Kurnevich, G. I.; Skoropanov, A.S.

doi:10.1007/bf00658794

Cited by 3 publications

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“…The slope and intercept of the curve for fire retardant viscose fiber are -5.816×10 3 and 11.09. The slope and intercept of the curve for viscose fiber are -5.886×10 3 as an example, the correlation coefficients R obtained from the differential and integral method were almost larger than 0.99, and the SD is less than 0.04, indicating good linearity, as shown in Table IV. Moreover, the activation energy, E, and the pre-exponential factor, A, calculated from the respective kinetic functions were almost the same.…”

Section: Thermal Decomposition Kineticsmentioning

confidence: 87%

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

Wang

Ren

et al. 2014

Journal of Engineered Fibers and Fabrics

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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.

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Section: Thermal Decomposition Kineticsmentioning

confidence: 87%

“…Thus the manufacture of fire retardant viscose fiber is necessary. Many researchers have studied the fire retardant property of viscose fiber by blending [1][2][3][4][5][6], finishing [7][8][9][10][11][12][13] and chemical modification [14][15] with fire retardant compound.…”

Section: Introductionmentioning

confidence: 99%

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

Wang

Ren

et al. 2014

Journal of Engineered Fibers and Fabrics

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The System Boron-Oxygen

Heller

1986

B Boron Compounds

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earlier literature cited therein. All formulas including radicals are written according to IUPAC nomenclature [1). Boron Oxides The Boron Monoxide Radical, [BO)"The [BO)" radical is one of the fundamental species appearing as intermediates in oxidation reactions. Hot-pressed B4C was oxidized in wet nitrogen and/or wet air atmosphere at a water vapor pressure of 1.5 to 20 kPa and in dry air of 900 up to 1400·C. The oxidation of B 4 C by water vapor and dry air at 900·C results in a weight loss; hence, it is assumed that the formation of [BO]" (and/or HB02) seems to be the major reaction. The oxidation rate of B 4 C by water vapor at 900·C could be expressed by surface chemical reaction-controlled kinetics with an apparent activation energy of 200 kJ/mol [2).In the reaction of molecular oxygen with crystalline a-boron powder, oxygen atoms in concentrations exceeding the thermodynamical equilibrium value (above an inert surface) by four to seven orders of magnitude were observed. By the use of the resonance fluorescence of oxygen atoms between 350 and 1000 ·C, the proposed mechanism of the reaction is: ( Boron ignition and combustion with its surrounding atmosphere was studied by timeresolved emission spectroscopy in the range of 0.2 to 5.5 Ilm. In one experiment, boron powder was burned in an oxygen atmosphere with initiation by a pyrotechnic device. The energy transfer by the hot gases led to a glowing phase of the boron particles, which then changed to a high-temperature combustion and ended in a second glowing phase. The two glowing phases emitted continuous emission spectra, and the burning phase emitted the bands of [BO]" and [B02]". Another experimental setup was used to feed boron particles into a hot oxidizing atmosphere, which was provided by a propane-air flame. The reaction was observed by high-speed cinematography and time-resolved emission spectroscopy. The flame contained a small amount of background radiation, and the emitted bands Of [BO]

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Preparation of cellulose nanocrystals and their application in reinforcing viscose filaments

et al. 2020

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Investigation of the thermal decomposition of a viscose fiber in the presence of several additives by means of IR spectroscopy

Cited by 3 publications

References 0 publications

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

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

The System Boron-Oxygen

Preparation of cellulose nanocrystals and their application in reinforcing viscose filaments

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