Flame‐retardant effect of polyaniline coating deposited on cellulose fibers

Stejskal, Jaroslav; Trchová, Miroslava; Sapurina, Irina

doi:10.1002/app.22144

Cited by 68 publications

(40 citation statements)

References 16 publications

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“…This clearly indicates the surface roughness of the matrix associated with a granularity of the conductive materials. The SEM images (Figure 4) further indicate that the synthesized PANI morphology is conserved even after the carbonization process, as observed by many researchers [24][25][26][27][28][29]. Thus, the retention of morphology is observed with a small shrinkage in size of the particle in NDC-2.…”

Section: Surface Morphology Analysissupporting

confidence: 50%

Synthesis of Nitrogen Doped Carbon and Its Enhanced Electrochemical Activity towards Ascorbic Acid Electrooxidation

Mutyala

Mathiyarasu

2014

International Journal of Electrochemistry

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Nitrogen doped carbon, synthesized by a novel way of carbonizing polyaniline in an inert atmosphere at a constant temperature of 800 ∘ C, exhibits several unique features. The carbon: nitrogen ratio is found to increase with the treatment duration up to 120 minutes and a mass reduction of 60 wt% is observed with an interesting observation of the retention of the bulk polymer morphology, surprisingly, even after the carbonization process. The electrochemical activity evaluated with potassium hexacyanoferrate and hexamine ruthenium redox systems at a regular time interval helps to tune the catalytic activity. This type of nitrogen doped carbon prepared from polyaniline base exhibits excellent electrocatalytic activity as illustrated by the oxidation of ascorbic acid in neutral medium.

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Section: Surface Morphology Analysissupporting

confidence: 50%

Synthesis of Nitrogen Doped Carbon and Its Enhanced Electrochemical Activity towards Ascorbic Acid Electrooxidation

Mutyala

Mathiyarasu

2014

International Journal of Electrochemistry

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Section: X-ray Diffraction Studiesmentioning

confidence: 97%

“…It can be seen that diffraction of Cellulose shows a typical peak at 14.8, 16.7 and 23.5 [15]. The pure PANI has a primary characteristic peak at 25.2 0 attributed to the scattering from the periodicity perpendicular to PANI chains and the one at 20.3 0 to the alternating distance between layers of polymer chains [15]. The diffraction peaks of PANI-Cellulose composite is similar to PANI, and no obvious diffraction peak at about 200 of cellulose appears, since the content of cellulose in the composite is very small and the cellulose is uniformly dispersed in the composite materials [16].…”

Section: X-ray Diffraction Studiesmentioning

confidence: 98%

Synthesis, Characterization of Polyaniline and Polyaniline Encapsulated Cellulose isolated from Sugarcane Bagasse and its study on Electronic Properties

Shalini¹,

Pandian²,

Jaisankar³

2017

DJ JECF

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In recent years, synthesis of conducting polymeric composites has attracted a great deal of attention due to their wide applications in various fields. In the present investigation, we report on the synthesis of polyaniline cellulose nanocomposite via oxidation polymerization method. Here the addition of ammonium peroxydisulfide as oxidizing agent into a reaction mixture of aniline and cellulose as solid support at room temperature leads to the formation of polyaniline encapsulated cellulose nanocomposite. The nanocomposite was isolated and then characterized by using various analytical techniques to understand the composition and the surface morphology of the PANICellulose nanocomposite. The structure of the nanocomposites was analysed using X-ray Diffraction method (XRD) and UV-visible spectroscopy instruments. The electrochemical behaviour of the polymer nanocomposite was studied by cyclic voltammetry in supporting electrolyte medium. Electrical measurement of composite together with increase in its conductance, there by makes it a possible future material for high temperature application purposes, resulting in PANI-Cellulose nanocomposite having high thermal and electrical conducting property compared to polyaniline.

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“…When the sample is placed in a flame or exposed to an elevated temperature, the cellulose interior of the fibers disintegrates, and the PANI-containing surface becomes carbonized. 17,26 Thus, carbonaceous microtubes are produced (Fig. 5).…”

Section: Concept Of Flame-retardant Performancementioning

confidence: 99%

“…12,16 Cellulose fibers coated with PANI yielded hollow, carbonaceous microtubes after burning. 17 In this study, we develop this property to test the protection of wood against burning.…”

Section: Introductionmentioning

confidence: 99%

Flame retardancy afforded by polyaniline deposited on wood

Stejskal

Brodinová

Sapurina

2006

J of Applied Polymer Sci

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Wood scantlings were coated with polyaniline (PANI) during the in situ polymerization of aniline with ammonium peroxydisulfate in an aqueous medium. The coating was made in hydrochloric or phosphoric acid solutions in both the absence and presence of stabilizers, poly(N-vinylpyrrolidone) or colloidal silica. The PANI-coated wood was placed in a flame or in a furnace operating at 400 or 6008C, and the decrease in the mass was determined. The wood coated with PANI was less reduced in its mass than uncoated samples and was converted to charcoal rather than to ashes. The deposition of related polymers, polypyrrole and poly(1,4-phenylenediamine), provided similar protection against heat exposure. Fourier transform infrared and Raman spectra of the residues after the burning of PANI-coated wood were compared. The soaking of wood in PANI colloids did not result in similar protection of wood against fire; the coating of the cellulose fibers with PANI during the polymerization was needed for the enhanced stability of wood at elevated temperatures. The concept of carbonization processes at the surface layer of PANI-coated cellulose fibers leading to the formation of carbonaceous microtubes is offered to explain the improved stability of wood against flame and heat exposure.

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Flame‐retardant effect of polyaniline coating deposited on cellulose fibers

Cited by 68 publications

References 16 publications

Synthesis of Nitrogen Doped Carbon and Its Enhanced Electrochemical Activity towards Ascorbic Acid Electrooxidation

Synthesis of Nitrogen Doped Carbon and Its Enhanced Electrochemical Activity towards Ascorbic Acid Electrooxidation

Synthesis, Characterization of Polyaniline and Polyaniline Encapsulated Cellulose isolated from Sugarcane Bagasse and its study on Electronic Properties

Flame retardancy afforded by polyaniline deposited on wood

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