Pyrolysis products and thermal degradation mechanism of intrinsically flame-retardant calcium alginate fibre

Zhang, Jianjun; Ji, Q.; Shen, Xiuhong; Xia, Yanzhi; Tan, Liwen; Kong, Qingshan

doi:10.1016/j.polymdegradstab.2011.01.029

Cited by 136 publications

(72 citation statements)

References 21 publications

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“…Sodium alginate is a desirable candidate for aqueous processing [16], and alginate fibers have been prepared by wet-spinning process because of the gelation properties of alginate [15], such as calcium alginate fibers, copper alginate fibers, barium alginate fibers, and zinc alginate fibers. These alginate fibers except for copper alginate are the inherently flame-retardant materials with better flame-retardant properties compared with that of alginic fibers [17][18][19][20]. The effects of these divalent metal ions on the thermal degradation properties, flame-retardant properties, and pyrolysis properties of alginate fibers were investigated by Xia et al [17,18] and Zhu [20].…”

Section: Introductionmentioning

confidence: 99%

“…These alginate fibers except for copper alginate are the inherently flame-retardant materials with better flame-retardant properties compared with that of alginic fibers [17][18][19][20]. The effects of these divalent metal ions on the thermal degradation properties, flame-retardant properties, and pyrolysis properties of alginate fibers were investigated by Xia et al [17,18] and Zhu [20]. The results indicated that divalent metal ions improved the flame-retardant properties of alginate fibers, and that decreased the thermal stabilities and the kinds of gaseous products in the alginate pyrolysis process.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2015

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Bio-based cobalt alginate and manganese alginate films were prepared by a facile ionic exchange and casting approach. Their flame retardancy, thermal degradation, and pyrolysis properties were investigated by vertical burning (UL-94), limiting oxygen index (LOI), thermogravimetric analysis, microscale combustion calorimetry (MCC), thermogravimetric analyzer coupled with Fourier transform infrared analysis (TG-FTIR), and pyrolysis-gas chromatography-mass spectrometry (Py-GC-MS). It showed that cobalt alginate film had much higher LOI value (45.0 %) than those of manganese alginate film (30.7 %) and sodium alginate film (24.5 %). Moreover, cobalt alginate film passed UL-94 V-0 rating, while manganese alginate and sodium alginate films showed no rating. Importantly, peak of heat release rate of cobalt alginate and manganese alginate in MCC test was much lower than that of sodium alginate, suggesting that the addition of cobalt ion and manganese ion decreases the release of combustible gases. TG-FTIR and Py-GC-MS results indicated that cobalt alginate and manganese alginate produced much less gaseous products than that of sodium alginate. Finally, a possible thermal degradation mechanism of cobalt alginate and manganese alginate had been proposed. The results provided useful information for understanding flame-retardant mechanism of alginate as well as for designing bio-based materials with excellent fire-retardant properties.

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Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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

et al. 2015

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“…It is a type of polysaccharides obtained from algae [17,18], such as laminaria japonica, laminaria hyperborean, ascophyllum nodosum, laminaria digitata and macrocystis pyrifera [19], and is a linear bio-based polymer which is constituted by a-1, 4-L-guluronate (G) and b-1, 4-Dmannuronate (M) repeating monomeric units. Because of its biodegradability, biocompatibility, and film-forming properties and abundance, alginate has been explored in textile industry, food industry, drug formulations and wound dressings [20,21]. Sodium alginate, a type of salt alginate, is soluble in water [22] and is a desirable candidate for aqueous processing [23].…”

Section: Introductionmentioning

confidence: 99%

“…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%

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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“…Calcium alginate fiber has very good flame retardant properties. Its limiting oxygen index of 34.4%, in the air from the fire self-extinguishing; and in the combustion process of effective combustion heat, heat release rate and the total heat release is relatively low, but the carbon dioxide production rate is relatively high [5,6] . The thermogravimetric analyzer, pyrolysis gas chromatograph mass spectrometer and X-ray diffractometer were used to study the pyrolysis products and the pyrolytic products of pyrolysis products in the process of thermal decomposition of calcium alginate fibers.…”

Section: Introductionmentioning

confidence: 99%

Preparation and Properties of Calcium Alginate Nano-Cu2O Flame Retardant Antimicrobial Membrane Material

Sun¹,

Li²,

Zhao³

et al. 2016

Proceedings of the 2016 2nd International Conference on Architectural, Civil and Hydraulics Engineering (ICACHE 2016)

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Abstract. Nano-Cu2O materials have many excellent properties, it is widely used, to overcome its sparingly solubility in water and poor stability among other defects, anhydrous cupric sulfate as raw materials, preparation of gel of nano-Cu2O by in stiu reduction method in sodium alginate solution(SA). The structure and morphology of the Cu2O in the gel was investigated by FT-IR and SEM were tested. On the basis of SA/nano-Cu2O gel, Calcium Alginate nano-Cu2O membrane were prepared by vacuum drying and crosslinking with Ca 2+. The material has flame retardant, antibacterial and other excellent performance. Has a wide range of applications.

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Pyrolysis products and thermal degradation mechanism of intrinsically flame-retardant calcium alginate fibre

Cited by 136 publications

References 21 publications

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

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

Flame retardancy and thermal degradation properties of cotton/alginate fabric

Preparation and Properties of Calcium Alginate Nano-Cu2O Flame Retardant Antimicrobial Membrane Material

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