Effect of manganese and cobalt ions on flame retardancy and thermal degradation of bio-based alginate films

Liu, Yun; Zhao, Jinchao; Zhang, Chuanjie; Guo, Yi; Zhu, Ping; Wang, De‐Yi

doi:10.1007/s10853-015-9435-9

Cited by 66 publications

(24 citation statements)

References 32 publications

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“…It has been known that alginate fibers and films have flame retardant properties without any addition of other flame ratardants [14][15][16][17][18][19][20] . Xia et al [15,16] and zhu et al [17][18][19][20][21] have investigated the effects of divalent and trivalent metal cations on the flame retardant properties, thermal degradation properties and pyrolysis properties of alginate fibers and films. The results indicated that divalent and trivalent metal ions improved the flame retardancy of alginate fibers and films, and that the addition of divalent metal ions and aluminum ions reduced the type of pyrolysis products of alginates.…”

Section: Introductionmentioning

confidence: 99%

Thermal degradation properties of biobased iron alginate film

Liu

Wang

Zhu

et al. 2016

Journal of Analytical and Applied Pyrolysis

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The flame retardancy and pyrolysis behavior of iron alginate were investigated by a microscale combustion calorimeter (MCC), a thermogravimetric analyzer which was coupled with a Fourier transform infrared spectroscopy and a mass spectrometry (TG-FTIR-MS), and a pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS), respectively. Large differences in the flame retardancy and pyrolysis behavior were observed from the MCC and Py-GC-MS results of iron alginate and sodium alginate. The MCC results showed that iron ions seriously reduced the value of peak heat release rate (PHRR) of alginate at lower temperature. TG-FTIR-MS and Py-GC-MS results indicated that iron ions influenced the devolatilisation products upon pyrolysis process. The pyrolysis of iron alginate was found to yield much less gaseous products than sodium alginate. And it was suggested that the iron ions strongly catalyzed alginate to produce H 2 O, CO 2 and other gaseous compounds which owned lower combustion heat values, resulting in the improvement of flame retardancy for iron alginate. On the basis of the results of TG-FTIR-MS and Py-GC-MS of iron alginate, the possible thermal degradation mechanism of iron alginate was proposed. The results obtained from this study might supply useful message for comprehending the flame retardant mechanism of alginates.

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Section: Introductionmentioning

confidence: 99%

Thermal degradation properties of biobased iron alginate film

Liu

Wang

Zhu

et al. 2016

Journal of Analytical and Applied Pyrolysis

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“…1 and Table 1, the addition of alginate fiber reduced T initial and T max of cotton/alginate fabric to 240 and 348°C, respectively. This result indicated that the addition of alginate fiber decreased the thermal stability properties of cotton fabric, and the reason for this phenomenon was that the thermal stability properties of alginate fiber were worse than those of cotton fiber [26][27][28][29][30]. Or calcium ion, which was from alginate fiber, might result in this phenomenon.…”

Section: Resultsmentioning

confidence: 95%

“…This phenomenon might be attributed to the addition of alginate fiber. According to the previous papers [26][27][28][29][30], T max s of alginate fibers and films were lower than 300°C, and the addition of metal ions further decreased T max of alginate. What is more, the addition of metal ions might catalyze some chemical reactions in the thermal degradation process of alginate and cotton.…”

Section: Flammability Versus Cone Testmentioning

confidence: 81%

“…Sodium alginate, a type of salt alginate, is soluble in water [22] and is a desirable candidate for aqueous processing [23]. On the basis of its gelation properties of alginate, which results from the interaction among carboxylate groups, hydroxyl groups and metal ions in aqueous solutions [24,25], alginate fibers and films have been prepared [20,21,23,[26][27][28][29][30], such as calcium alginate fibers, copper alginate films and so on. The obtained alginate fibers and films are the inherently flame retardant bio-based materials.…”

Section: Introductionmentioning

confidence: 99%

“…and Al 3? on flame retardancy, thermal degradation properties and pyrolysis properties of alginate were studied by Zhu [26][27][28][29][30] and Xia [20][21][22]. The results showed that metal ions enhanced flame retardancy of alginate and reduced the release of gaseous compounds in pyrolysis process.…”

Section: Introductionmentioning

confidence: 99%

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Flame retardancy and thermal degradation properties of cotton/alginate fabric

Liu

Zhao

Zhang

et al. 2016

J Therm Anal Calorim

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Alginate fiber, a kind of bio-based fiber, is a type of inherently flame retardant material. Can the addition of alginate fiber to cotton fiber improve flame retardancy of prepared cotton/alginate fabric? To solve this question, in the present work, flammability and thermal degradation properties of the cotton and cotton/alginate fabrics were studied by thermogravimetric analysis (TG), microscale combustion calorimetry (MCC), cone calorimeter (cone) and thermogravimetric analysis coupled with Fourier transform infrared analysis. Compared to cotton fabric, TG results showed that the addition of alginate fiber decreased initial degradation temperature (T initial ) and maximum-rate degradation temperatures (T max ) of cotton/alginate fabric; however, the addition of alginate fiber improved the char residual amount at higher temperature. MCC and cone results indicated that the addition of alginate fiber reduced the peak heat release rate value and total heat release, showing improvement on flame retardant properties of cotton/alginate fabric. The release amounts of inflammable gases, such as H 2 O, for cotton/alginate fabric, were almost the same as cotton fabric in the thermal degradation process; however, compared to cotton fabric, the release amounts of flammable gases, such as compounds containing -C-H groups, alcohol, compounds containing carbonyl groups and ethers, were reduced. On the basis of the results mentioned above, the flame retardant properties of cotton/alginate fabric were enhanced. The results obtained in the present study can supply a flame retardant method by the addition of inherently bio-based flame retardant alginate fiber to flame-retard cotton fabric and enlarge the applied fields of alginate fiber.

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New alginate foams: Box‐Behnken design of their manufacturing; fire retardant and thermal insulating properties

Vincent

Dumazert

Dufourg

et al. 2017

J of Applied Polymer Sci

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A new method for preparing alginate foams with progressive release of copper in the presence of sodium lauryl sulfate (SLS, foaming agent) has been designed. Copper acts as the ionotropic gelling agent through the reaction of copper carbonate with gluconolactone. The process does not require freeze‐drying contrarily to the conventional method used for preparing macroporous alginate foams. The new materials investigated in this study have remarkable thermal properties, including thermal conductivity lower than 0.041 W m−1 K−1 and low heat release (below 2 kJ g−1), which allows labeling these foams self‐extinguishing materials. An experimental design methodology, based on a Box‐Behnken plan with three parameters and three levels, is successfully used for evaluating the impact of the amounts of alginate, SLS, and copper carbonate on the productivity, apparent density, and shrinking at air‐drying. It yielded an optimization of the process for the manufacturing of light, and stable/rigid insulating and thermally stable materials. © 2017 Wiley Periodicals, Inc. J. Appl. Polym. Sci. 2018, 135, 45868.

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Effect of manganese and cobalt ions on flame retardancy and thermal degradation of bio-based alginate films

Cited by 66 publications

References 32 publications

Thermal degradation properties of biobased iron alginate film

Thermal degradation properties of biobased iron alginate film

Flame retardancy and thermal degradation properties of cotton/alginate fabric

New alginate foams: Box‐Behnken design of their manufacturing; fire retardant and thermal insulating properties

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