Growth and fire resistance of colloidal silica-polyelectrolyte thin film assemblies

Laufer, Galina; Carosio, Federico; Martinez, Rico; Camino, Giovanni; Grunlan, Jaime C.

doi:10.1016/j.jcis.2010.12.072

Cited by 113 publications

(52 citation statements)

References 49 publications

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“…One of the first examples of this type of coating was made of positive alumina-coated silica (10 nm) and negative silica nanoparticles (10 or 40 nm): this structure turned out to improve the flame-retardant features of cotton or polyester fabrics [80,81]. More specifically, the fully inorganic coatings were able to prevent the melt-dripping phenomena of polyester during vertical flame spread tests and to significantly improve the time to ignition in cone calorimetry experiments.…”

Section: Fully Inorganic Lbl Coatingsmentioning

confidence: 99%

Surface-Engineered Fire Protective Coatings for Fabrics through Sol-Gel and Layer-by-Layer Methods: An Overview

Malucelli

2016

Coatings

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Fabric flammability is a surface-confined phenomenon: in fact, the fabric surface represents the most critical region, through which the mass and heat transfers, responsible for fueling the flame, are controlled and exchanged with the surroundings. More specifically, the heat the fabric surface is exposed to is transferred to the bulk, from which volatile products of thermal degradation diffuse toward the surface and the gas phase, hence feeding the flame. As a consequence, the chemical and physical characteristics of the fabric surface considerably affect the ignition and combustion processes, as the surface influences the flux of combustible volatile products toward the gas phase. In this context, it is possible to significantly modify (and improve) the fire performance of textile materials by "simply" tailoring their surface: currently, one of the most effective approaches exploits the deposition of tailored coatings able to slow down the heat and mass transfer phenomena occurring during the fire stages. This paper reviews the current state of the art related to the design of inorganic, hybrid, or organic flame-retardant coatings suitable for the fire protection of different fabric substrates (particularly referring to cotton, polyester, and their blends). More specifically, the use of sol-gel and layer-by-layer (LbL) methods is thoroughly discussed; then, some recent examples of flame retardant coatings are presented, showing their potential advances and their current limitations.

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Section: Fully Inorganic Lbl Coatingsmentioning

confidence: 99%

Surface-Engineered Fire Protective Coatings for Fabrics through Sol-Gel and Layer-by-Layer Methods: An Overview

Malucelli

2016

Coatings

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“…Grunlan et al have demonstrated that LbL can enhance the flame retardancy of cotton, using different organic and inorganic pairs (Li et al 2010(Li et al , 2011Laufer et al 2011). Our group has already shown that this strategy allows enhancing the thermal stability and flame retardancy of polyester: more specifically, the morphology of the deposited coating was found to significantly affect the flammability and combustion properties of the fabric (Carosio et al 2011a).…”

Section: Introductionmentioning

confidence: 99%

Layer by layer complex architectures based on ammonium polyphosphate, chitosan and silica on polyester-cotton blends: flammability and combustion behaviour

2012

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Hybrid organic-inorganic coatings containing ammonium polyphosphate (APP), chitosan and silica have been deposited on polyester-cotton blends (PET-CO), exploiting the layer by layer assembly. To this aim, two different complex architectures (namely, chitosan/APP bilayers plus silica/ silica bilayers or silica/silica/chitosan/APP quadlayers) have been thoroughly investigated. The effect of their morphologies on the flame retardancy properties of the fabrics (flammability and combustion behaviour) has been assessed. More specifically, some of the above complex architectures exhibited significant enhancements concerning flammability (i.e. the suppression of afterglow, together with a considerable final residue increase) and combustion behaviour as evidenced by cone calorimeter tests. A close relationship between the overall flame retardancy properties of the blends and the level of dishomogeneity of the LbL architectures has been shown.

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“…stability and the flame retardancy of textile fabrics. 17,18 To this aim, in the present work, two types of nanoparticles, a polyhedral oligomeric silsesquioxane (POSS) and an aluminum oxide hydroxide (bohemite) modified with sulfonate salts (OS1), have been investigated. POSS is characterized by a nanometric cage structure containing covalently bonded reactive functionalities suitable for polymerization or grafting.…”

Section: Introductionmentioning

confidence: 99%

Thermal properties and combustion behavior of POSS‐ and bohemite‐finished cotton fabrics

Alongi

Brancatelli²,

Rosace

2011

J of Applied Polymer Sci

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A finishing process with polyhedral oligomeric silsesquioxane (POSS) and bohemite nanoparticles has been exploited for enhancing the thermal stability and flame retardancy of cotton fabrics. The thermal behavior of flame retardant treated cellulosic fabric has been studied by thermogravimetric analyses (TGAs). It has been found that such nanoparticles favor the carbonization of the cellulose and slow down the kinetics of thermo-oxidation in air. At the same time, the finished fabrics have turned out to be more efficient with respect to neat cotton as far as the flame retardancy is concerned, pointing out an increase of the time to ignition (TTI) and a decrease of the heat release rate (HRR). Furthermore, a comparison between the fire performances of the nanoparticles under study and a commercial phosphorus-based flame retardant has been investigated. The morphology and elemental composition present in the treated fabrics have been also investigated using scanning electron microscopy (SEM) coupled to the energy dispersive spectroscopy (EDS), and the results have been compared with the untreated fabric.

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Growth and fire resistance of colloidal silica-polyelectrolyte thin film assemblies

Cited by 113 publications

References 49 publications

Surface-Engineered Fire Protective Coatings for Fabrics through Sol-Gel and Layer-by-Layer Methods: An Overview

Surface-Engineered Fire Protective Coatings for Fabrics through Sol-Gel and Layer-by-Layer Methods: An Overview

Layer by layer complex architectures based on ammonium polyphosphate, chitosan and silica on polyester-cotton blends: flammability and combustion behaviour

Thermal properties and combustion behavior of POSS‐ and bohemite‐finished cotton fabrics

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