Effect of chitosan on the fire retardancy and thermal degradation properties of coated cotton fabrics with sodium phytate and APTES by LBL assembly

Liu, Yun; Wang, Quan-Quan; Jiang, Zhiming; Zhang, Chuanjie; Liu, Guohong; Chen, Hua-Qi; Zhu, Ping

doi:10.1016/j.jaap.2018.08.024

Cited by 143 publications

(50 citation statements)

References 48 publications

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“…For every sample, it is to be noted that some broad bands are observed between 1000 and 1200 cm −1 . These characteristic peaks are assigned to the phosphate groups [28,32,35]. The results are consistent with the XPS conclusion that the nitrogenous polyaromatic structures are prevented from decomposing to quaternary N species.…”

Section: Resultssupporting

confidence: 88%

Montmorillonite-Synergized Water-Based Intumescent Flame Retardant Coating for Plywood

Sun

Zhu

et al. 2020

Coatings

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In this study, montmorillonite (MMT) was used as an inorganic synergist to prepare the water-based intumescent flame retardant (IFR) ornamental coating for plywood. Results indicate that the 7 wt.% MMT modified IFR coating (No. 3) possess the best fire resistance (longer than 20 min) of the tested samples according to the fire performance, which significantly declines the specific extinction area by 44.12 m2·kg−1 compared to the coating without MMT by cone calorimeter. In addition, characterizations such as XPS, XRD, TG, SEM and FTIR were characterized to investigate the surface and bulk properties as well as the morphology of MMT synergized water-based IFR coating. It is revealed that the residual nitrogenous polyaromatic structure and 25.5% residual mass in the No. 3 coating are a result of the effect of MMT on the antioxidation properties of the char layer.

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Section: Resultssupporting

confidence: 88%

Montmorillonite-Synergized Water-Based Intumescent Flame Retardant Coating for Plywood

Sun

Zhu

et al. 2020

Coatings

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“…To cite some examples close to mycelium-based biomaterials, it is known for at least a decade that adding chitosan in the phosphorylation process of cotton fabrics enhances flame retardancy [64]. [65][66][67] with respect to a multi-layer coating made of various chitin derivatives. Layer-by-layer deposition of flame retardants in a chitosan matrix also has been suggested for foams such as polyurethane [68].…”

Section: Thermal Properties and Fire Safetymentioning

confidence: 99%

Physico-Mechanical and Thermodynamic Properties of Mycelium-Based Biocomposites: A Review

et al. 2019

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Reducing the use of non-renewable resources is a key strategy of a circular economy. Mycelium-based foams and sandwich composites are an emerging category of biocomposites relying on the valorization of lignocellulosic wastes and the natural growth of the living fungal organism. While growing, the fungus cements the substrate, which is partially replaced by the tenacious biomass of the fungus itself. The final product can be shaped to produce insulating panels, packaging materials, bricks or new-design objects. Only a few pioneer companies in the world retain a significant know-how, as well as the ability to provide the material characterization. Moreover, several technical details are not revealed due to industrial secrecy. According to the available literature, mycelium-based biocomposites show low density and good insulation properties, both related to acoustic and thermal aspects. Mechanical properties are apparently inferior in comparison to expanded polystyrene (EPS), which is the major synthetic competitor. Nevertheless, mycelium-based composites can display an enormous variability on the basis of: fungal species and strain; substrate composition and structure; and incubation conditions. The aim of the present review is to summarize technical aspects and properties of mycelium-based biocomposites focusing on both actual applications and future perspectives.

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“…In this stage, the formed phosphoric acid and polyphosphoric acid produced by sodium phytate had a catalyzed effect on the thermal degradation of the wood. It resulted that the weight loss rates of the treated samples were higher than that of the uncoated wood, indicating that the coatings promoted the carbonization and dehydration of the material [39]. In addition, the treated samples came into the second stage at a lower temperature than the uncoated one, that is, holocellulose (cellulose and remaining hemicellulose) underwent violent pyrolysis at about 250 to 400 °C.…”

Section: Thermal Stability and Fire Resistance Testsmentioning

confidence: 99%

Flame-Retardant Wood Composites Based on Immobilizing with Chitosan/Sodium Phytate/Nano-TiO2-ZnO Coatings via Layer-by-Layer Self-Assembly

Zhou

2020

Coatings

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Composite coatings of inorganic nanomaterials with polyelectrolytes are promising materials for wood modification. Endowing wood with flame retardancy behavior can not only broaden the range of applications of wood, but also improve the safety of wood products. In this work, chitosan/sodium phytate/TiO2-ZnO nanoparticle (CH/SP/nano-TiO2-ZnO) composite coatings were coated on wood surface through layer-by-layer self-assembly. The morphology and chemical composition of the modified wood samples were analyzed using scanning electron microscopy and energy dispersive spectrometry. The thermal degradation properties and flame retardancy of the samples treated with different assembly structures were observed by thermogravimetric analysis, limiting oxygen test, and combustion test. Due to the presence of an effective intumescent flame retardant system and a physical barrier, the CH/SP/nano-TiO2-ZnO coatings exhibited the best flame retardant performance and required only approximately six seconds for self-extinguishing. The coated samples had a limiting oxygen index of 8.4% greater than the original wood.

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Effect of chitosan on the fire retardancy and thermal degradation properties of coated cotton fabrics with sodium phytate and APTES by LBL assembly

Cited by 143 publications

References 48 publications

Montmorillonite-Synergized Water-Based Intumescent Flame Retardant Coating for Plywood

Montmorillonite-Synergized Water-Based Intumescent Flame Retardant Coating for Plywood

Physico-Mechanical and Thermodynamic Properties of Mycelium-Based Biocomposites: A Review

Flame-Retardant Wood Composites Based on Immobilizing with Chitosan/Sodium Phytate/Nano-TiO2-ZnO Coatings via Layer-by-Layer Self-Assembly

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