Thermal decomposition of cotton cellulose treated with selected salts

Wanna, Joseph T.; Powell, Janine E.

doi:10.1016/0040-6031(93)80227-2

Cited by 13 publications

(6 citation statements)

References 5 publications

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“…The former endothermic inflexion was due to dehydration of the moisture, and the later peak was due to thermal decomposition of the cellulose in the sample. Joseph et al reported that in the case of cotton polymer fabric the first step may be attributed to the thermo-oxidative degradation, and this decomposes during the second step thermal degradation process [26]. The results suggested the increase in thermal decomposition temperature of the treated cotton as compared to control.…”

Section: Tga-dtasupporting

confidence: 57%

Spectral and Thermal Properties of Biofield Energy Treated Cotton

Trivedi¹,

Tallapragada²,

Branton³

et al. 2015

AJEE

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Abstract:Cotton has widespread applications in textile industries due its interesting physicochemical properties. The objective of this study was to investigate the influence of biofield energy treatment on the spectral, and thermal properties of the cotton. The study was executed in two groups namely control and treated. The control group persisted as untreated, and the treated group received Mr. Trivedi's biofield energy treatment. The control and treated cotton were characterized by different analytical techniques such as differential scanning calorimetry (DSC), thermogravimetric analysis (TGA), fourier transform infrared (FT-IR) spectroscopy, and CHNSO analysis. DSC analysis showed a substantial increase in exothermic temperature peak of the treated cotton (450 ºC) as compared to the control sample (382ºC). Additionally, the enthalpy of fusion (∆H) was significantly increased by 86.47% in treated cotton. The differential thermal analysis (DTA) analysis showed an increase in thermal decomposition temperature of treated cotton (361ºC) as compared to the control sample (358ºC). The result indicated the increase in thermal stability of the treated cotton in comparison with the control. FT-IR analysis showed an alterations in -OH stretching (3408→3430 cm -1 ), carbonyl stretching peak (1713-1662 cm -1 ), C-H bending (1460-1431 cm -1 ), -OH bending (580-529 cm -1 ) and -OH out of plane bending (580-529 cm -1 ) of treated cotton with respect to the control sample. CHNSO elemental analysis showed a substantial increase in the nitrogen percentage by 19.16% and 2.27% increase in oxygen in treated cotton as compared to the control. Overall, the result showed significant changes in spectral and thermal properties of biofield energy treated cotton. It is assumed that biofield energy treated cotton might be interesting for textile applications.

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Section: Tga-dtasupporting

confidence: 57%

Spectral and Thermal Properties of Biofield Energy Treated Cotton

Trivedi¹,

Tallapragada²,

Branton³

et al. 2015

AJEE

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“…Appl. Pyrolysis 80 (2007) 489-495 cotton fabrics [3,4]. And not many investigators have studied the textile waste kinetics over wider temperature and conversion ranges.…”

Section: Introductionmentioning

confidence: 99%

Pyrolysis of textile wastes

Miranda¹,

Sosa_Blanco²,

Bustos-Martínez³

et al. 2007

Journal of Analytical and Applied Pyrolysis

109

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“…In addition, they proposed a second order decomposition mechanism as the most suitable. Wanna and Powell [7] studied the thermal decomposition of untreated and treated cotton fabric with selected salts in oxidative and inert atmospheres using TGA-FTIR. On the other hand, no papers considering the overall decomposition kinetics of cotton cellulose or cellulose have been found.…”

Section: U N C O R R E C T E D P R O O Fmentioning

confidence: 99%

Thermogravimetric analysis during the decomposition of cotton fabrics in an inert and air environment

Moltó

Font

Conesa

et al. 2006

Journal of Analytical and Applied Pyrolysis

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The thermal degradation of samples of used cotton fabrics has been investigated using thermogravimetric analysis (TGA) between room temperature and 700 8C. Experiments were carried out with about 5 mg of sample in three different atmospheres: helium, 20% oxygen in helium and 10% oxygen in helium. Three different heating rates were used at each atmosphere condition. A kinetic model for the decomposition of used cotton fabrics explaining the behavior of all the runs performed has been proposed and tested. For the pyrolysis of the cotton, the model comprises two parallel reactions. For the combustion process, one competitive reaction was added to each parallel reaction of the pyrolysis model and four combustion reactions of the different solid fractions to obtain volatiles. One single set of parameters can explain all the experiments (pyrolysis, oxidative pyrolysis and combustion) at the three different heating rates used.

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Thermal decomposition of cotton cellulose treated with selected salts

Cited by 13 publications

References 5 publications

Spectral and Thermal Properties of Biofield Energy Treated Cotton

Spectral and Thermal Properties of Biofield Energy Treated Cotton

Pyrolysis of textile wastes

Thermogravimetric analysis during the decomposition of cotton fabrics in an inert and air environment

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